[TIP] The Infamous, Seemingly Unfixable Bootloop Problem - Sony Ericsson Xperia Mini, Mini Pro, Xperia Pro, A

Some of you might have encountered this, and some of you possibly could in the future (let's hope not), but this will hopefully be of help. I once had a problem with my Live with Walkman in which it boots up until it reaches the homescreen before entering a bootloop. Strangely enough, it also happened to two of my friends who owned SE 2011 MDPI devices as well. These are some of my observations:
Bootloops when network is in GSM (2G) mode
If in WCDMA/GSM mode, phone bootloops the moment 3G signal is lost
Phone works without SIM card, but bootloops when a certain load is placed on the CPU (rebooted when I played Minecraft)
With that said, I've tried formatting my SD card and resetting factory settings a hundred times over; I was even in between firmwares, ROMs, and kernels, but to no avail. In my desperation, I tried using the battery from my then-girlfriend's Xperia X8 (my phone and hers have the same type of battery, EP400), and it miraculously cured the bootloop. I did buy a new battery, and my phone was as good as new. When the same thing happened to my two friends, using a new battery also did the charm. There were a few problems with the new battery though. I'll list the possible solutions I've found.
BATTERY MISCALIBRATION (sudden drop to 0 or misreading)
Reason/s: It may just be a kernel problem, or your phone might be adjusting to the new battery.
Solution/s: Try installing a different kernel. If it does not fix this, drain your battery to 0, then charge it fully offline. Keep repeating until battery is calibrated.
NOTE: Battery calibration apps won't really do much - you don't necessarily need them.
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Click to collapse
SUDDEN REBOOTS
Reason/s: You're probably putting too much weight on the CPU or GPU (more likely if you're a gamer), or you might have overclocked your device and is using a governor that hangs around in the higher frequencies.
Solution/s: If you really are a gamer, I'd suggest using GB - you won't really need to overclock as it's great performance-wise. If you must overclock, never go beyond 1.4 GHz (this is the default CPU frequency of the Xperia Arc S), as it may kill your new battery. Also, try to avoid gaming or using your CPU heavily for long periods of time. Our phones need to rest too.
NOTE: For help on kernel governors, check out THIS AWESOME GUIDE by zhanjia.
NOTE: The said problem is more likely to occur on higher versions of Android, as they naturally consume more power, CPU, and RAM.
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Click to collapse
Other than those two, I've had no other problems. If this ever happened to you (again, let's hope not), always check the software first. If it does not fix the problem, you can try doing what I did.
P.S. I'm not saying that you should stick with Gingerbread if you encounter the battery miscalibration and the sudden reboots. You are absolutely free to use any ROM (we have a handful here on XDA, and we have our fantastic developers to thank for that). Cheers!

Related

Atrix Update 4.1.57 Sluggish?

Hello everyone,
Has anybody else who updated to 4.1.57 find that their Atrix is now kinda sluggish? I don't mean all the time, but every now and then I get random stutters or sluggishness when switching between programs. A couple of times, it even screen locks for a few seconds when waking up. This has never happened to me before with the 4.1.26, where programs just run without hesitation. They either run smoothly, or FC in the process. But now, some of them just becomes jittery.
I wonder if it has something to do with Motorola's battery improvement in the update. When it got sluggish on me, I decided to go to into setcpu to see at wat speed the phone was running. I noticed that the phone was throttling severely all the way down to 216 mhz the second the phone is not being used. it fluctuates up and down but it seems to always drop down there once i dont touch the phone. I think this is causing an issue cuz there's a lot of background apps and widgets running and once you try running an active program, it takes a split second to start, and that split second causes it to stutter.
I haven't had the screen lock in a while, so that's a good thing. But it seems setcpu can't seem to force the cpu to constantly stay high, even if i put the minimum to 1000mhz, so I get those stutters every now and then.
Anybody has any suggestions on this matter? Im thinking if this persists, I might just go back to 5.1.26 until they come up with a major update. Really the only reason I updated was cuz the prompt was driving me mad.
p.s. another way I know how the cpu isnt running a constant 1ghz --- my phone isnt as hot as it used to be. it used to be so warm in my hand, my hand would turn red from holding it.
It takes very, very little time for a modern CPU to change its clock speed. Monitor your computer's CPU clock closely sometime, it almost certainly does throttling to a similar degree. I also observed similar levels of throttling via tegrastats on my Atrix prior to the update.
Personally 1.5.7 has been good for me, at least in the sense that nothing appears to be worse after.
Sent from my MB860 using XDA App
Only heard good reviews on 4.1.57. Can't wait for Bell to issue it too
lol, i dont like throttling. All my PCs n laptops run on full speed (throttling disabled) whenever they're on. I expect the same with my phone x) I just don't like any lag but I understand wat you mean. I still wanna hear what other's feel about the update.
note: I'm about to deodex the phone in a bit. Let's see how it ends
Moving stuff around in device memory is an order of magnitude slower than your CPU changing clock speed, and moving stuff between flash and device member is an order of magnitude or two slower than that. CPU throttling isn't the right place to look for this sort of issue.
As for your computers and not allowing them to throttle...enjoy the power bill I suppose. Even in overclocked scenarios modern processors work just fine with throttling enabled.
Sent from my MB860 using XDA App
Atrix 4.1.57 issues
I have had my Atrix for over a month with no issues. After the 4.1.57 update I have the following 3 issues:
1. The phone randomely reboots (never did this before the update)
2. The cell signal is much weaker; no signal in areas where it had signal before
3. Apps seems to start slower.
I called motorola technical support and asked if there is a way to un-install this update; the answer is NO, all they can come up with is a factory RESET which will not remove the update but will remove all my data and Apps.
I finally sent the phone to AT&T and got a replacement with 4.1.26 and it works fine, especially the battery life and the cell signal and no reboots so far.

[Q] Why is my phone rebooting at the unlock screen?

OK, so I'm on GSB 3.4 (though this issue began with 3.3), and I'm having a problem with my phone rebooting (screen cuts off after about a second, and the phone immediately reboots to the skateboard screen) at the following times:
1. Whenever I attempt to wake the phone from sleep.
2. Whenever I hang up a phone call.
3. Whenever I get a phone call while the phone is asleep.
4. Whenever I plug the phone in to charge while the phone is asleep (be it a wall socket or PC) [see below].
These problems only occur when the phone is NOT plugged into a charging source; the problem appears to be nonexistent in this scenario. But as soon as I unplug, all 4 become auto-crash scenarios.
I tried going back to GSB 3.2, but no dice. I then resorted to the stock-ish XTRsense ROM, which fixed the issue, but going back to Froyo just was too big a downgrade for me.
Throughout this process, I full-wiped multiple times, hoping to track the issue to an app or setting, but even before restoring anything through TBU (I think I may have just let the phone go to sleep at the "Touch the Android" initial setup screen once), the problem persisted, eliminating apps, settings, or CM7 CPU modifications as possible culprits.
I've continued to play with CM7 CPU settings even up till now, but I'm not getting much of anywhere. I've now resorted to the "Caffeine" app, which just never lets the phone go to sleep, and I just turn the brightness down or activate the "Desk Clock" mode in the default Clock app to save battery.
HELP?
Have you tried Tazz's ROM or CondemnedSoul's ROM, just to see what happens with those? CS's ROM uses ADW as the default launcher (not sure about Tazz's) - perhaps it's something with LauncherPro?
Had this happen once
Sent from my Aosp Gin-Tazz using XDA App
My phones use to freeze on the unlock screen, it happened in multiple roms. i switched back to the "ondemand" governor and it hasn't happened since. not sure if it the same issue but it might help.
My last name is also Schultz ....
Sent from my Aosp-Gin-Tazz using XDA Premium App
Guys, just thought I throw out the idea that it might an overclocking (i.e., hardware) issue?
I see that the Conap's CFS kernel that GSB 3.4 uses is max clocked at 604 MHz, but maybe that's too high for your particular phone?
I also think that schultzmd's comment about the ondemand governor helping might point to the clock stepping to a higher speed when coming out of sleep (and being related to clock speed). Maybe try running the phone at a lower speed just to see if its better behaved might prove instructive.
Just a thought...
Cheers!
scary alien said:
Guys, just thought I throw out the idea that it might an overclocking (i.e., hardware) issue?
I see that the Conap's CFS kernel that GSB 3.4 uses is max clocked at 604 MHz, but maybe that's too high for your particular phone?
I also think that schultzmd's comment about the ondemand governor helping might point to the clock stepping to a higher speed when coming out of sleep (and being related to clock speed). Maybe try running the phone at a lower speed just to see if its better behaved might prove instructive.
Just a thought...
Cheers!
Click to expand...
Click to collapse
Sounds familiar: http://forum.xda-developers.com/showpost.php?p=14016867&postcount=5186
I'll try the changing the max, but I know I've tried as low as 604 max (19 min) with the problem persisting, and as high as 710 or 768 before GSB 3.3 (when the problem started) with no major issues. And I had already been using Ondemand when the problem started, having stopped using Smartass when I thought it slowing the performance down a bit. Any other governors I should try?
And does the overclocking issue not apply when a phone is charging?
doogald said:
Sounds familiar: http://forum.xda-developers.com/showpost.php?p=14016867&postcount=5186
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Click to collapse
lol, doogald...I had no idea .
I should know better than to come in to any thread you've already weighed-in on and know that you've already exhausted all the possibilities.
I'll leave the Op to your very capable hands.
Cheers and thanks for keeping an eye out here on XDA and over at AF too (and probably six or seven other sites ).
natemup said:
And does the overclocking issue not apply when a phone is charging?
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Click to collapse
Well, you are introducing some extra heat into the equation while charging, which might be enough to tip the balance against you if it is indeed an overclock issue.
scary alien said:
lol, doogald...I had no idea .
I should know better than to come in to any thread you've already weighed-in on and know that you've already exhausted all the possibilities.
I'll leave the Op to your very capable hands.
Cheers and thanks for keeping an eye out here on XDA and over at AF too (and probably six or seven other sites ).
Click to expand...
Click to collapse
You would have only seen that if you had seen the post in the GSB thread, of course.
I am still going to suggest trying Tazz or Condemned. From what the OP says, he should be able to see that it's having the same issue pretty quickly.
But, just to rule out the OC issue, you could try setting the max to stock 528 and see if it still happens.
doogald said:
You would have only seen that if you had seen the post in the GSB thread, of course.
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Click to collapse
lol...that post was on the 519th page of (currently) 530 pages! (I read the first page, does that count? )
Still crashing on 528 max / 19 min...
natemup said:
Still crashing on 528 max / 19 min...
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Click to collapse
How about on Tazz or Condemned? And, 19.2 is too slow for a minimum for this kernel. 245 should be the minimum.
scary alien said:
Well, you are introducing some extra heat into the equation while charging, which might be enough to tip the balance against you if it is indeed an overclock issue.
Click to expand...
Click to collapse
I was inquiring as to why the issue DOESN'T happen when I'm charging. I'm not sure if that's what you were saying, but I have no issues while the phone is charging; it's weird, because CM7's CPU governor doesn't allow profiles for "screen-off", "charging", or anything like that. It just seems to make my problem more random and untraceable. It literally is happening on EVERY CPU setting, even 480 max (which to me, is just pointless to actually use)
I've full-wiped so many times in the last few days, I'm wary to just try a different Gingerbread ROM when GSB is (was, for me) so stable and full-featured. I'm trying my darnedest to just stick it out and charge-charge-charge to avoid the issue.
One more thing: if, right after the phone reboots itself, I unlock it before the screen goes off and manually put it to sleep and quickly wake it back up, the issue usually doesn't occur (and I can keep doing this, putting it to sleep and waking it back up again, with no issue). But if I unlock it and let it sit and reach the screen timeout itself (or never unlock it after it reboots, then let it sit for a while), the problem reoccurs.
natemup said:
I've full-wiped so many times in the last few days, I'm wary to just try a different Gingerbread ROM when GSB is (was, for me) so stable and full-featured. I'm trying my darnedest to just stick it out and charge-charge-charge to avoid the issue.
Click to expand...
Click to collapse
I have used both GSB and Condemned and you will not be missing anything. I stopped using GSB because I could not get market updates to stick reliably. I do not have that issue at all with Condemned.
Right now the only issue with the latest Condemned is apparently a GPS issue, so I would go with V6 or V7 rather than V8 for now until CondemnedSoul gets an update. Or, if you don't navigate, go ahead with V8. It's just fine.
You're obviously having a stability issue with GSB now, so you have nothing to lose but about 45 minutes of time and a Nandroid Restore to go back to GSB if you don't like it.
So, I had a minor issue that was fixed by switching to a different ROM. It's worth a try.
I wish you luck finding a solution.
natemup said:
I was inquiring as to why the issue DOESN'T happen when I'm charging. I'm not sure if that's what you were saying, but I have no issues while the phone is charging; it's weird, because CM7's CPU governor doesn't allow profiles for "screen-off", "charging", or anything like that. It just seems to make my problem more random and untraceable. It literally is happening on EVERY CPU setting, even 480 max (which to me, is just pointless to actually use)
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Click to collapse
Nate,
Sorry about that ...I was confused from where you asked in post #8 about whether or not overclocking was in effect while charging (it can/could be, depending on the overclocking monitor/govenor I suppose) and I had lost that point from your original post.
I would say take doogald's advice and switch to at least some other ROM since that would help indicate if it is indeed a software issue or a hardware issue. Its sounding like its not clock-speed related given the things you've already tried. If you've still got issues on other ROMs, that would tend to point to some hardware issue (our Erii are getting a little long in the tooth at this point, after all).
You could even flash back to stock and see if the phone is still stable there since you can always re-root and re-restore your Nandroid backups.
Good luck...I hope you figure something out.
Problem is alive and well on Condemned GB. *sigh*
XTRsense was fine and flawless, but going back to Froyo after months on gingerbread was just too depressing for me...
Sent from my ERIS using XDA App
I'm going to make one more suggestion - not sure if you have tried this yet, but try flashing GSB from a full wipe. When you go through the setup, DO NOT LOG IN TO YOUR GOOGLE ACCOUNT. After the launcher starts, go into the market, let it log you in to your Google account then, and then install all of your apps and change all of your settings from scratch.
When you log in with your Google account when installing a CM ROM, it tries to restore your apps and settings from your last CM ROM install. It may be that you have some weird setting or app that is causing this that you just keep reinstalling when you flash the ROM and log in with your account.
If you've already tried this, then try running xtrSENSE or xtrROM instead. They are both excellent ROMs and clearly your phone likes them better.
[edit] Oh, and try leaving your min at 245 MHz for a while. See if that helps your phone run better. It should, and it should have the exact same battery life as 19.2, as nonsensical as that sounds.
It is literally happening as soon as I boot the phone after a fresh GB install. I four-corner the Android setup screen, let the screen time out, and boom I'm screwed.

[Q] Fascinate Freezes overnight

I'm running JT's vanilla GB [over Heimdall'ed stock EH03] on my fascinate.
I use my fascinate as my alarm clock, and I woke up this morning to a extremely choppy ringtone. < and that is is the understatement of the day.
Anyway, I try to press "dismiss" to dismiss my alarm, and it feels like the screen is not responding. I press the power button, and it takes probably like 5 seconds to complete the CRT animation. After that, I can see the screen is still on (hard to tell unless in the dark with the AMOLED), and it won't do a thing after that until I 3-button-combo or take out the battery.
As a side note, it was also doing this on my previous rom, SuperClean3 v8.1. One of the main reasons I switched back to JT's vanilla gb.
The first night the alarm worked fine. [2 days ago] Yesterday, I was watching some video files, I pressed the power button, I left for a few minutes, I came back and it was frozen. [Took foreverrrrrr for the CRT turn-on animation, and screen did not respond].
This is really really annoying, and I would really like to find out what is wrong with my phone.
One more thing I should mention.. this same kind of thing happened once in a while on the stock froyo firmware, when I bought it on craigslist. I would come to it sometimes and turn it on, and the lockscreen would show and the touchscreen wouldn't respond. I had to take the batt. out then cuz I didn't know about 3-button-combo.
The USB would only charge and not transfer files and only would charge.
So I sent it in cuz samsung said I had 1 mo. warranty left, and then they said they fixed everything in the ticked, and I got it back and it seemed to work. [the usb file transfer worked..]
So can anybody give me any advice? Like logcat? Would that tell me what is causing this problem?
Any help is appreciated!
Are your CPU settings stock? I've noticed the "sleep of death", which sounds similar to your issue, when I was undervolted too much at 100mhz.
k_nivesout said:
Are your CPU settings stock? I've noticed the "sleep of death", which sounds similar to your issue, when I was undervolted too much at 100mhz.
Click to expand...
Click to collapse
Thanks for the reply. I will look into this 'sleep of death' thing.
And I haven't edited my cpu settings. I went to superuser to be sure and the only apps listed are Superuser, Terminal Emulator, and Titanium Backup.
So I just went on a 1-hour trip, and when I got to where I was going, this happened to me again. The screen-on animation was slower than a slug on salt. 3-button-combo reset, I let it reboot, and it was fine.
I just got home 1/2 hr ago and it did it again.
Sigh.. well I only have like 2 apps that always run, 3G Watchdog and Equalizer. I've uninstalled 3G WD just to see if it does anything.
Edit: I will install ROM Manager and set the absolute minimum freq to 200mhz, and see what happens. That would make sense if it's messing up at 100mhz when the screen goes off, and then it's not able to think fast enough to up it back to 1ghz.
It sounds like it might be an issue with your phone if the problem follows you between roms and your kernel settings are stock. That is unless this is a more common issue with those roms, but I don't think they are. The sleep of death issue that I've run into before is simply the phone refusing to wake up, requiring a 3-button reset/battery pull, so I'm not sure about the slowness to respond before freezing that you've run in to.
I'd try setting the minimum frequency to 200mhz with an app like voltage control (rom manager is for rom flashing, backups/restore), maybe that would help the phone's responsiveness regarding waking up properly. I'm not sure though since when I had the sleep of death issue mentioned before, I just lessened the undervolting I had done and it seemed to resolve it. I don't have much expertise to share on your specific issue though, I'm sorry. I'd almost be inclined to believe that it might be a more phone-specific problem if you're running stock kernel settings on roms where other users haven't reported the same issue, but trying the 200mhz thing can't hurt.
k_nivesout said:
It sounds like it might be an issue with your phone if the problem follows you between roms and your kernel settings are stock. That is unless this is a more common issue with those roms, but I don't think they are. The sleep of death issue that I've run into before is simply the phone refusing to wake up, requiring a 3-button reset/battery pull, so I'm not sure about the slowness to respond before freezing that you've run in to.
I'd try setting the minimum frequency to 200mhz with an app like voltage control (rom manager is for rom flashing, backups/restore), maybe that would help the phone's responsiveness regarding waking up properly. I'm not sure though since when I had the sleep of death issue mentioned before, I just lessened the undervolting I had done and it seemed to resolve it. I don't have expertise to share on your specific issue though, I'm sorry. I'd almost be inclined to believe that it might be a more phone-specific problem if you're running stock kernel settings on roms where other users haven't reported the same issue, but trying the 200mhz thing can't hurt.
Click to expand...
Click to collapse
My bad, I meant ROM Toolbox. It has lots of apps built in including a CPU slider. Anyhow disabling 100mhz did not fix anything. So tonight I will set the minimum frequency to 800 or even 1000 mhz because I want to see if that stops the freezing up. If it does, then I'll know it's a clock speed issue.
I should also mention I sent it in for USB repair. It wouldn't connect to PC, it'd only charge. I also mentioned to Samsung it would lock up every so often from waking up. They upgraded froyo to gingerbread and said it passed all tests, sent it back, I never stayed on the firmware they gave me long enough to see if it froze up.
So on the stock roms, do they underclock the cpu frequency by default??
I don't believe that the cpu is underclocked or undervolted by default. I'd try flashing the stock firmware (EH03), and seeing if the issue happens there as well. Although I thought you mentioned it happened to you on superclean before, and I think that's just a modified stock rom? But it would be worth trying I suppose, then you could be sure it's a hardware issue and see about possibly getting a replacement. I'm assuming that you're still under warranty if you've sent the phone back recently enough for them to put gingerbread on it?
Other than that, I can't really think of anything else.. Maybe try jumping on IRC sometime and hitting up some of the people (that are generally more knowledgeable than myself) on there, they'd probably be able to give you a good idea of whether or not it's an issue with your specific phone. Although that's what it sounds like to me, I'm no expert.
k_nivesout said:
I don't believe that the cpu is underclocked or undervolted by default. I'd try flashing the stock firmware (EH03), and seeing if the issue happens there as well. Although I thought you mentioned it happened to you on superclean before, and I think that's just a modified stock rom? But it would be worth trying I suppose, then you could be sure it's a hardware issue and see about possibly getting a replacement. I'm assuming that you're still under warranty if you've sent the phone back recently enough for them to put gingerbread on it?
Other than that, I can't really think of anything else.. Maybe try jumping on IRC sometime and hitting up some of the people (that are generally more knowledgeable than myself) on there, they'd probably be able to give you a good idea of whether or not it's an issue with your specific phone. Although that's what it sounds like to me, I'm no expert.
Click to expand...
Click to collapse
Lol, when I sent it in there was like half a month or so left on the warranty, the person said it expires at the end of this month [Dec] so I figure maybe a day or two.
What's the IRC channel info? freenode?
EDIT: I forgot to ask something. So you are saying, the stock firmware [EH03 or froyo EH09] runs the cpu clock constantly at 1GHz? Even when it's sleeping? Wouldn't that give bad battery life? [lol, speaking of batteries, I just got a new one and it's charging]
I had this happen to me 6 months ago. You my friend need a replacement phone. It has nothing to do with the rom/kernal. I tried everything. Sometimes phones just take a crap. Got a replacement. Ran the same thing I ran when it was happening and haven't had a problem since. Sorry to hear. Just explain it it Verizon and see what they do.
gotsflat4love said:
I had this happen to me 6 months ago. You my friend need a replacement phone. It has nothing to do with the rom/kernal. I tried everything. Sometimes phones just take a crap. Got a replacement. Ran the same thing I ran when it was happening and haven't had a problem since. Sorry to hear. Just explain it it Verizon and see what they do.
Click to expand...
Click to collapse
This is bad news indeed, since I am not even sure how many days I have on the warranty. But I think I will Odin EH03, and then set the alarm tonight. If I wake up and it's done it again, I will call up samsung and tell them and hopefully I have warranty.
But please, tell me, when you tried to turn on the phone did the CRT animation go very slowly? and then when you pressed power, it wouldn't come on again?
Edit 2: alright! I call samsung and I have warranty until Jan 9. Woot.. So I set up an RMA with samsung, I will Odin EH03 tonight. If I wake up to a choppy alarm and a non-responsive screen, I shall send it to samsung ASAP and I hope they gimme a brand new Fascinate. that would be awesome..
Nice, glad to hear you got the warranty thing figured out. I was thinking it sounded like an issue with your phone in specific and it sounds like the other poster's experience would suggest that. Hopefully it's an issue that they can replicate and don't give you any issues getting a replacement.
To answer your question, no, the stock kernel settings wouldn't keep the processor at the highest frequency. The only way I can see that happening is if you set the screen-off profile to "performance", and I'm not sure why anyone would do that because it would indeed yield bad battery life I'd think. I'm guessing the stock kernel defaults to an "ondemand"-like profile, where it would scale the frequency according to load and favor lower frequencies or go in to a deep sleep when the screen is off.
k_nivesout said:
Nice, glad to hear you got the warranty thing figured out. I was thinking it sounded like an issue with your phone in specific and it sounds like the other poster's experience would suggest that. Hopefully it's an issue that they can replicate and don't give you any issues getting a replacement.
To answer your question, no, the stock kernel settings wouldn't keep the processor at the highest frequency. The only way I can see that happening is if you set the screen-off profile to "performance", and I'm not sure why anyone would do that because it would indeed yield bad battery life I'd think. I'm guessing the stock kernel defaults to an "ondemand"-like profile, where it would scale the frequency according to load and favor lower frequencies or go in to a deep sleep when the screen is off.
Click to expand...
Click to collapse
Oh. well the reason I asked is because you said this: I don't believe that the cpu is underclocked or undervolted by default.
So this morning, I woke up to my iPod's alarm, which I had set as a backup a few minutes after my Phone alarm should have gone off. I went to see if the phone was frozen, like I was hoping, so that it would reliably broken , but instead it was off. I turn it on, it shows the full green battery.. then it boots up like nothing was wrong. But I think that turning off randomly every night [which I assume it should do every time] is enough for Samsung to realize my phone really is screwed and that they need to do something about that.
So anyway, I printed out the label, packed my phone, and dropped my phone off at the local UPS drop off.
Hopefully I will be receiving some good news from samsung soon [i.e. that they will give me a replacement... ]
mvmacd said:
Oh. well the reason I asked is because you said this: I don't believe that the cpu is underclocked or undervolted by default.
Click to expand...
Click to collapse
Yeah, looking back on that, I misspoke. Technically, UNDERvolting/clocking is just reducing the voltage or clock speed from the "default" kernel settings. So technically, since the stock settings are the "default", they (by definition) would not be "undervolted" or "underclocked". I guess all I was trying to say is that I'm sure whatever the default settings are, they're set for a balance of performance, battery life, and stability. Just because the default max frequency is 1000mhz, doesn't mean that the CPU will stay there, that's what kernel governors are for essentially: to tell the CPU how to scale based on load (as I understand it at least).
Hopefully things go well with the replacement. Just curious, why are you dealing with Samsung directly as opposed to Verizon?
k_nivesout said:
Yeah, looking back on that, I misspoke. Technically, UNDERvolting/clocking is just reducing the voltage or clock speed from the "default" kernel settings. So technically, since the stock settings are the "default", they (by definition) would not be "undervolted" or "underclocked". I guess all I was trying to say is that I'm sure whatever the default settings are, they're set for a balance of performance, battery life, and stability. Just because the default max frequency is 1000mhz, doesn't mean that the CPU will stay there, that's what kernel governors are for essentially: to tell the CPU how to scale based on load (as I understand it at least).
Hopefully things go well with the replacement. Just curious, why are you dealing with Samsung directly as opposed to Verizon?
Click to expand...
Click to collapse
1. I'm not the original owner
2. I'm not a Verizon subscriber. PagePlus Celluar [A verizon MVNO] is my service provider. They have much better plans, including monthly, and prepaid, if you ask me.
Kernel issue.
sent from my Sensation XD
Yess..
Good news! Got an email saying my phone has been shipped:
Code:
Original Problem:
TECHNICAL INQUIRY - PHONE FREEZING / LOCKED UP - FREEZE/DELAY BETWEEN MENU FUNCTIONS
Problem found:
BAD BGA COMPONENT
Solution:
REPLACED PBA
I guess the PBA is basically the motherboard? I suppose that could have been the cause of overnight freezing, and so my phone should be fixed.
Nice.. Just 2 days left on my warranty. Cutting it kinda close, I know lol
Very well done sir
sent from my Sensation XD

[Q] Overheating Issue?

I have searched our Forum for anything on this phone overheating and there is one thread that I came across, but most people did not really have this issue at all. I mean in normal usage doing pretty much nothing my phone holds at 45-50C, given that is with all four cores operating, and if I play a game the cores have reached 70C and up, I am almost certain that is simply too high for this phone to be operating at. Also, even when I use eco mode the phone still idles around 40C and will reach temps as high as 64C. I am just wondering if I am alone or people have actually tested this also and have results similar to mine. I was hoping maybe there might be potential fixes for this or would I need to get a replacement device?
Don't have a great answer for you but I can tell you the phone has some safeguards in place. One that I am aware of is the screen brightness will self-dim until the phone temp drops.
Arlington- as in TX.?
Pony Express said:
Don't have a great answer for you but I can tell you the phone has some safeguards in place. One that I am aware of is the screen brightness will self-dim until the phone temp drops.
Arlington- as in TX.?
Click to expand...
Click to collapse
Yeah, I live in Arlington, TX. Yeah, I noticed the self-dim feature, but that happens way too much, and too often, I mean I rarely get to use the phone at 100% brightness and no phone should be like that in my opinion. I am just curious if other people are dealing with similar issues, but I am checking eco mode now and my temps on idle are 36C-38C, its when I actually use my phone as a quad core phone, shocking, that it gets waaay hotter. I mean its hot on the back of the phone when I touch there and when I check the temp with an app. I feel I should be able to use my quad core as a quad core when need be, not have it get so hot its unbearable to hold, plus I don't want to do any damage with it reaching 70C temps.
Me, too in Arlington.
I would definitely say based on that it would be a good idea to exchange it, those temps are a bit much.
All og's get hot like that when playing games, etc. It is just how it is designed - like it or not / love it or leave it, lol.
I would have preferred they make the phone a little thicker with more heat sink so it could run full speed all the time when needed.
But they didn't. So, oh well. Maybe my next phone will fix that someday.
Jason
Sent from my LG-E970 using Tapatalk 2
Pony Express said:
Me, too in Arlington.
I would definitely say based on that it would be a good idea to exchange it, those temps are a bit much.
Click to expand...
Click to collapse
Darn, I was hoping for something else, ha. Oh well, guess I will be dealing with that then, meh.. By any chance could you tell me your temps you are getting? So, I know what is normal for the device?
With 5 mins. light use (wi-fi, web, phone call, 2 texts, no gameplay) 25.4 C
---------- Post added at 03:28 PM ---------- Previous post was at 03:16 PM ----------
If you are using a phone for AT&T network on T-mo, it is possible that is adding to the temp prob, not an expert here just an educated guess that the more it tries to find network signal the warmer it may get.
Pony Express said:
With 5 mins. light use (wi-fi, web, phone call, 2 texts, no gameplay) 25.4 C
---------- Post added at 03:28 PM ---------- Previous post was at 03:16 PM ----------
If you are using a phone for AT&T network on T-mo, it is possible that is adding to the temp prob, not an expert here just an educated guess that the more it tries to find network signal the warmer it may get.
Click to expand...
Click to collapse
Yes, but this happen on wifi only with data and no sim card installed, I am waiting to get an at&t sim card, lol. Shouldn't have done it online, but it cost 99 cents, instead of $15 bucks in the store.
Good call... hope it helps !!
Pony Express said:
Good call... hope it helps !!
Click to expand...
Click to collapse
Well, the strange thing is that I reverted back to stock everything, no root, or unlocked boot loader, and my overheating issue has been solved.. Weird. I only get around 35C even doing a benchmark with all four cores running at the same time. I think the Base rom and kernels still have some bugs that need to be worked out. I idle at 22C now, woot!
Glad to hear that!! Nice work.
am using the new build from Team Nocturnal with no probs. You might want to read through the thread first as some are having issues.... point is, no overheating and battery life seems good so far.
One thing I learned by testing, even going to the extent of exchanging my phone 2 days ago - if you charge your phone while it is off and unplug the charger it will drain the battery because it does not shut down the charge animation. The workaround is to simply turn the phone on and let it boot, either leave it on or then it is ok to turn off.
Pony Express said:
Glad to hear that!! Nice work.
am using the new build from Team Nocturnal with no probs. You might want to read through the thread first as some are having issues.... point is, no overheating and battery life seems good so far.
One thing I learned by testing, even going to the extent of exchanging my phone 2 days ago - if you charge your phone while it is off and unplug the charger it will drain the battery because it does not shut down the charge animation. The workaround is to simply turn the phone on and let it boot, either leave it on or then it is ok to turn off.
Click to expand...
Click to collapse
Oh wow, I did not even know that was an issue, ha, well, thanks for the heads up on that and I think I have to send my phone off to LG sadly, according to AT&T, but when I get it back I will be looking into their new base rom, I did skim the thread a little, and I am glad to hear there is no overheating. I am not sure if it was a kernel issue or the base rom itself, which is puzzling.
You may have selected Sk8's kernel during The Base's installation. I can't speak for it myself, but it's different than the stock kernel and may have been causing the problem?
Speculation at best.
No worries, Its what I am doing right now, just speculating, I mean I actually selected both kernels in the base rom, and tested them out. I was trying to figure out what the issue was. I think it might not have left me do a clean install, as I did select Sk8's Kernel first. So, I am thinking that the kernel stuck, even when I did a full wipe, before reinstalling and using the other kernel. I also was getting Kernel crashes, and it kept showing up a kernel crash screen, and asked me to go into download mode to store the dump file on my computer. I am new to android/Linux things, I am far more familiar with Windows based things, but android is the freedom OS of mobile devices. I like the customizations and things you can do with it, lol. Its sweet, and I am learning everyday, so that I can possible become a Dev later on. I have ported some things before and I know other forms of coding, just not the required programming languages for Linux.
My guess would be Sk8's kernel as well, I know it has the gpu overclocked, so if you are running graphics intensive apps it doesn't surprise me that you can be getting overheating issues.
Maybe try the bootloader unlock again to reinstall the freegee kernel...
Just a suggestion.
bleached45 said:
My guess would be Sk8's kernel as well, I know it has the gpu overclocked, so if you are running graphics intensive apps it doesn't surprise me that you can be getting overheating issues.
Maybe try the bootloader unlock again to reinstall the freegee kernel...
Just a suggestion.
Click to expand...
Click to collapse
v1:
- initial release
v2:
- added GPU OC and UV settings
v2.1
- revert GPU settings until i get them more stable
- add voltage control via sysfs (use system tuner to select your custom UV settings)
- fix the black screen issue for alot of users
v2.2
- fast_charge on usb (icon will still show as slow charge but it will actually charge faster)
- cpu tweak to enable use of all freqs in high stress times like games and benchmarks
^ That is the change log for Sk8's Kernel, the gpu isn't overclocked anymore, it was in the initial release. So, I know its not that, and as I stated in a previous post I tried both of them, but even when I wiped everything, I think that Sk8's kernel was sticking. The reason I say this is even after a fresh install and selecting Freegee Kernel during installation, when the rom booted back up it would show Sk8's Kernel, and I would get Kernel crashes, which would also lead to a Crash screen, asking me to go into download mode to save the dump file. Though even after messing with that and monitoring it for several days, its hard to tell what it was, but I do know I am not having the issues anymore when I brought everything back to stock, I can assume it was one of the kernels, a combination, the base rom, but I am not 100% sure.
Zekk98 said:
v1:
...
^ That is the change log for Sk8's Kernel, the gpu isn't overclocked anymore, it was in the initial release. So, I know its not that, and as I stated in a previous post I tried both of them, but even when I wiped everything, I think that Sk8's kernel was sticking. The reason I say this is even after a fresh install and selecting Freegee Kernel during installation, when the rom booted back up it would show Sk8's Kernel, and I would get Kernel crashes, which would also lead to a Crash screen, asking me to go into download mode to save the dump file. Though even after messing with that and monitoring it for several days, its hard to tell what it was, but I do know I am not having the issues anymore when I brought everything back to stock, I can assume it was one of the kernels, a combination, the base rom, but I am not 100% sure.
Click to expand...
Click to collapse
Shows what I know, lol.
I was going by what I read for the Base ROM Aroma installer description, maybe the Base is still using an old version, but if you installed it on your own, then you should have been the latest.
Sorry, lol.

(SOLVED) ZU heating after 4.3 update

If anyone is experiencing this problem, I hope the following steps may help.
I would like to express my appreciation to XDA members, who have commended and helped out with this. Credits go to @LordManhattan and @abuihsan . Many thanks for your help.
1/ Do a re-flash: I always thought my device was a c6802, after I flashed c6833, it helped.
2/ Do a factory reset/ Cache wipe/ Dalvik Wipe/ in recovery or in the phone settings.
3/ Install SD-Maid and clean the mess from the programs, also take a look at APPCONTROL to see which is running. You can freeze it here.
4/ Install Performance control to Underclock your CPU. Believe me, 1.7Ghz is far too enough for all the tasks you need.
5/ Use more pwerful tool, like Titanium Backup to stop all the backgound-running apps. You just need to leave the one which were in GREEN color.
6/ Use Wakelock Detector to see which apps get your phone out of deepsleep. Mostly they are Facebook and Messenger. My advice: Disable Facebook notice and if you don't use chat quite often, don't install facebook messenger.
Hope these help.
Personally I had tried a lot of methods, including checking the processes and re-insert the memory card but no such helps. Therefore, if you need any advice or any comments, feel free to send me an PM or reply here, I will gladly help you out, like what the community had helped me our of my situation.
Hi everyone,
Recently I just bought a ZU from a local vendor here. It runs 4.2.2 with no problem. However, I want to get rid of the *new system update* and I also want to use the xperia Themes, I decided to upgrade to 4.3.
My phone model is C6802, and I chose the file here : http://forum.xda-developers.com/showthread.php?t=2453921
The upgrade went through fast and smooth, as I had experienced in many Sony devices.
However, after getting to 4.3, I had noticed some problems as follow:
+ Heat: Device heats up very fast, even left alone. Just imagine you have the phone on 100% battery lying on your table, a moment later it heats up and the battery drops dramatically.
+ Battery drop: Just as mentioned above, the battery drops quickly. I do not expect extreme battery life on this device, but since 4.3, it is too low, I can barely make it to 6 hours without doing anything consuming battery.
+ Process: When checking the battery, I notice that most of the process that takes up battery is Android OS, which nearly 50-60%. I use the phone frequently to answer SMS and call, sometimes play games. I think that the most used applications should be the bad-ass screen?
I am running on the 14.2.A.0.290 with R4B.
Anyone had experienced this problem before, or know a solution to fix? Will clearing the Dalvik Cache help? I had re-flash several times but the problem is still there.
Many thanks in advance.
Click to expand...
Click to collapse
Sounds like somethings has gone wrong in the update process.
Have you tried backing up all your data and doing a factory reset?
I do not think clearing Dalvik will help you here, sounds like something else is acting up. You could try to install one of the apps designed to detect what is causing the wakelock.
I'm not at my Android tablet at the moment, but I think I used this when I had this problems myself on my Galaxy Note: https://play.google.com/store/apps/details?id=com.uzumapps.wakelockdetector
Sent from my iPad mini using Tapatalk HD
fjevel said:
Sounds like somethings has gone wrong in the update process.
Have you tried backing up all your data and doing a factory reset?
I do not think clearing Dalvik will help you here, sounds like something else is acting up. You could try to install one of the apps designed to detect what is causing the wakelock.
I'm not at my Android tablet at the moment, but I think I used this when I had this problems myself on my Galaxy Note:
Sent from my iPad mini using Tapatalk HD
Click to expand...
Click to collapse
First of all, thanks for your reply and suggestion.
I had tried to flash the roms multiple times, but the problem still exists. Furthermore, I even flash back to 4.2.2 and the problem is still there. The phone heats up slowly and battery runs out pretty fast.
I had installed the Wakelock Detector on my device and I will update the situation tomorrow, I will leave it there for a night and see the status tomorrow.
Did you wipe after updating? I had the same issue when i updated to 4.3.
Correct me if I'm wrong, but as long as he's been downgraded to 4.2.2 again, he'd have to wipe. At least that is how it was on my Xperia Z.
-KJ
this might not be related, but I've been noticing much worse battery life today than normal! i normally only drop about 50% in 24 hours, but today I've dropped 30% in just a few hours. Android OS seems to be doing it...
no real heat issue tho, maybe slightly warmer from whatever the OS is doing, but nothing too major. running stock rooted 4.3
had that on my Xperia Z on a 4.1 or 4.2 build (dunno which one). Sounds strange, but simply turning off the sync fixed the problem, give it a try :laugh:.
Hope it also helps on your XZU.
LordManhattan said:
Did you wipe after updating? I had the same issue when i updated to 4.3.
Click to expand...
Click to collapse
At first I did not choose to wipe Data in Flashtool, then I flashed again, this time I checked everything.
the problem still exists.
UPDATE:
Yesterday after working hours, I had rooted and installed BetterBatteryStats, Performance Control to monitor the system. I also had WaveLockDetector and Titanium Backup installed.
It appeared that the CPU runs all the time, in the highest state (2.15 Ghz), the phone never goes to DeepSleep and Awake all the time.
On Performance control, I had underclocked the CPU to 1.5Ghz and the temperature seems to be cooler.
I had tried to freeze a lot of applications via Titanium backup but so such luck.
Still researching.
However, many thanks to your kind replies. At least I know that I'm not alone with this problem :good:
justsomebody said:
At first I did not choose to wipe Data in Flashtool, then I flashed again, this time I checked everything.
the problem still exists.
UPDATE:
Yesterday after working hours, I had rooted and installed BetterBatteryStats, Performance Control to monitor the system. I also had WaveLockDetector and Titanium Backup installed.
It appeared that the CPU runs all the time, in the highest state (2.15 Ghz), the phone never goes to DeepSleep and Awake all the time.
On Performance control, I had underclocked the CPU to 1.5Ghz and the temperature seems to be cooler.
I had tried to freeze a lot of applications via Titanium backup but so such luck.
Still researching.
However, many thanks to your kind replies. At least I know that I'm not alone with this problem :good:
Click to expand...
Click to collapse
I ever had no deep sleep problem with 4.3, even in stamina and airplane mode, and with location-off too, I checked with BBS and found the 'trigger' is a process under google now app. I use GREENIFY and get the google now hybernated. Everything fines now and I still can use google now as it only hybernated when not in use : )
abuihsan said:
I ever had no deep sleep problem with 4.3, even in stamina and airplane mode, and with location-off too, I checked with BBS and found the 'trigger' is a process under google now app.and get the google now hybernated. Everything fines now and I still can use google now as it only hybernated when not in use : )
Click to expand...
Click to collapse
hey, thanks for your reply. I did the same to you, even with Titanium backup to ensure this will never shows up again, but CPU keeps throtlling at 100%. I still can not find an answer to this 100% thing. now the phone is quite hot in my pocket, I decided to put in my bag and even turn off to keep it from heating.
I will try another rom and update.
justsomebody said:
hey, thanks for your reply. I did the same to you, even with Titanium backup to ensure this will never shows up again, but CPU keeps throtlling at 100%. I still can not find an answer to this 100% thing. now the phone is quite hot in my pocket, I decided to put in my bag and even turn off to keep it from heating.
I will try another rom and update.
Click to expand...
Click to collapse
do you use any cleaner/task killer app? before trying other rom or update, maybe you need to uninstall it, reboot recovery and wipe cache and see the result.
I don't know if this is relevance but while using greenify I also uninstall the previous cleaner app and replace with another one that I think is better.
now my c6833 has great deep sleep.
abuihsan said:
do you use any cleaner/task killer app? before trying other rom or update, maybe you need to uninstall it, reboot recovery and wipe cache and see the result.
I don't know if this is relevance but while using greenify I also uninstall the previous cleaner app and replace with another one that I think is better.
now my c6833 has great deep sleep.
Click to expand...
Click to collapse
Hi, Thanks again for your advice.
Would you please give me the name of the cleaner apps that you think are way better?
Are you running on 4.3 stock or on some modified roms?
justsomebody said:
Hi, Thanks again for your advice.
Would you please give me the name of the cleaner apps that you think are way better?
Are you running on 4.3 stock or on some modified roms?
Click to expand...
Click to collapse
The thing is, you don't need a task killer/cleaner app. It was useful way back on Android 2.1/2.3, but you shouldn't use it at all on 4.0+. You're actually making things worse.
mine has been heating up as well. the battery isn't draining like how yours is, but any kind of use will heat the top back side of the phone. I checked and after killing all apps, my cpu load was still around 65%. is that normal? no custom flash here. locked bootloader. updated through pcc normally. I'd imagine this is why 4.3 isn't running as buttery smooth like everyone else.
Sent from my C6833 using xda app-developers app
ij0rgei said:
mine has been heating up as well. the battery isn't draining like how yours is, but any kind of use will heat the top back side of the phone. I checked and after killing all apps, my cpu load was still around 65%. is that normal? no custom flash here. locked bootloader. updated through pcc normally. I'd imagine this is why 4.3 isn't running as buttery smooth like everyone else.
Sent from my C6833 using xda app-developers app
Click to expand...
Click to collapse
No, that's not normal. Mine's around 20-30 degress celsius (depending on what i'm doing). Even streaming 1080p videos shouldn't make it hot or even mildly hot. When i had the heating problem, two cores would always be stuck at 2150 MHz. Now one core is active at 960 MHz when the screen is on. CPU load is around 20 and 60% (single core). Temperature is currently at 26 degrees. Also, stop killing apps and processes. Most of them are set to start automatically, so when you kill them over and over again, they'll start again and they'll use even more battery. Android is built to manage resources very well on its own, and it's not operating like Windows or any other computer OS. Just leave it alone unless something has gone rouge and you don't have a choice.
I'm on stock 290, rooted and extremely debloated.
- Current battery level: 88%
- Current uptime: 3 h 30 min
- Current screentime: 1 hour (browsing etc.)
LordManhattan said:
No, that's not normal. Mine's around 20-30 degress celsius (depending on what i'm doing). Even streaming 1080p videos shouldn't make it hot or even mildly hot. When i had the heating problem, two cores would always be stuck at 2150 MHz. Now one core is active at 960 MHz when the screen is on. CPU load is around 20 and 60% (single core). Temperature is currently at 26 degrees. Also, stop killing apps and processes. Most of them are set to start automatically, so when you kill them over and over again, they'll start again and they'll use even more battery. Android is built to manage resources very well on its own, and it's not operating like Windows or any other computer OS. Just leave it alone unless something has gone rouge and you don't have a choice.
I'm on stock 290, rooted and extremely debloated.
- Current battery level: 88%
- Current uptime: 3 h 30 min
- Current screentime: 1 hour (browsing etc.)
Click to expand...
Click to collapse
hmm... yea that sounds like the problem i am having. im noticing two cores stuck at 2150mhz with a third kicking in here and there. how were you able to fix it? just a fresh install of .290?
so as far as the apps go, i have Du Battery Saver installed and the "optimize" button is supposed to clear up some of the background junk. are you saying that i should leave the optimize button alone and just let android figure itself out?
ij0rgei said:
hmm... yea that sounds like the problem i am having. im noticing two cores stuck at 2150mhz with a third kicking in here and there. how were you able to fix it? just a fresh install of .290?
so as far as the apps go, i have Du Battery Saver installed and the "optimize" button is supposed to clear up some of the background junk. are you saying that i should leave the optimize button alone and just let android figure itself out?
Click to expand...
Click to collapse
What i'm saying is that you should uninstall that crappy app. Task killers were useful three years ago when Android devices had slow processors and low amount of RAM. What you're doing now is killing everything everytime you tap that button. WHY do you want to do that? What's the point of having 2GB of RAM when you don't want to use it? Are you always killing processes on your computer too? Would you do it if your computer had 32GB of RAM with 30GB available? Unused RAM is wasted RAM. Android is a modern OS that can handle this on its own. If you only have 300MB RAM left and you want to play Asphalt 8 which requires (i'm guessing) 500MB RAM, Android will find the oldest and less frequently used process and kill it. It's that easy.
You can read more about it here and here.
LordManhattan said:
What i'm saying is that you should uninstall that crappy app. Task killers were useful three years ago when Android devices had slow processors and low amount of RAM. What you're doing now is killing everything everytime you tap that button. WHY do you want to do that? What's the point of having 2GB of RAM when you don't want to use it? Are you always killing processes on your computer too? Would you do it if your computer had 32GB of RAM with 30GB available? Unused RAM is wasted RAM. Android is a modern OS that can handle this on its own. If you only have 300MB RAM left and you want to play Asphalt 8 which requires (i'm guessing) 500MB RAM, Android will find the oldest and less frequently used process and kill it. It's that easy.
You can read more about it here and here.
Click to expand...
Click to collapse
gotcha. I get what you're saying.
now that that is settled, what to do about the original problem? phone is still heating up.
Sent from my C6833 using xda app-developers app
ij0rgei said:
gotcha. I get what you're saying.
now that that is settled, what to do about the original problem? phone is still heating up.
Sent from my C6833 using xda app-developers app
Click to expand...
Click to collapse
I think it'll be a little easier if you tell us what you've done till now. We have no idea what you've tried and not tried.
Sent from my Z Ultra
LordManhattan said:
I think it'll be a little easier if you tell us what you've done till now. We have no idea what you've tried and not tried.
Sent from my Z Ultra
Click to expand...
Click to collapse
ok. so I haven't done anything at all to remedy the situation. I figured I'd ask about it before messing it up myself. I upgraded to .290 via pcc. it updated fine with no errors. once it was done updating, it was hot and battery was diminished. I had seen on another thread that most people had that happened so I didn't see it as an issue, just a side effect of the update process.
I have been checking back to see if anyone was having heating issues with 4.3 after the update and didn't hear about it until I had seen this thread. the OP stated he flashed .290 on his 6802 and is rooted. I am not, so I wasn't sure if the steps he was taking were the same given my 6833 being completely stock.
Sent from my C6833 using xda app-developers app

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