Kernel dev advice needed - Galaxy S III Q&A, Help & Troubleshooting

Hi why is there on some device (like our galaxy s3) such a big latency in wake up? Is it due to deep sleeping modes or does it take some long pre calculations or what ?
Sent from my GT-I9300 using XDA

Am I that slow to release the home button or what?
Mine is completely turned on the moment I release the button.
Deep sleep, GPU sleeping, lock screen having to be generated and background apps all cause delays. However it's not THAT long =)

It is long enough to be noticeable though.

My device need about 2 sec before it turns on the screen. Gh.rohit rom and siyah kernel.
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Related

[Q] Wake from sleep takes a couple seconds?

Searched Q&A and havent seen any other complaints to match my own.
My sgh-i777 takes about 2 seconds to wake from sleep when I hit the power button. This is only when on battery power. Maybe not a full 2 secs, but noticeable lag anyway (the only noticeable lag btw). It wakes up immediately when plugged in to AC power. I noticed the issue both on stock and CM7(which is freaking awesome) .
So here is my Q:
Is this normal wake behavior for the SGS2? Just got it today and wondering if maybe it is a hardware issue.
PS: I know I need to update my sig now... Dell Streak 5 was an awesome form factor, but holy **** I love this new processor! (But thumbs cramping a bit from the small screen, LOL)
I seem to have a lag too. I had it before root while on stock and i still have it on cm7
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Sent from my Samsung Galaxy S II using XDA App
Fundamentally takes at least 650msec to wake up from deep suspend - add to that other wakeup processing and you get about a second.
Nothing you can really do about it - most of it is spent waiting for the modem to wake up.
The lag is getting me greif from iphail owners.... They're like my [stupid retarded lame piece of ****] Iphone doesn't lag.
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Sent from my Samsung Galaxy S II using XDA App
Latest CM7 nightly (10) has LED notifications which uses wake_lock to prevent deep suspend. -guess I need to get a 2nd battery
Going to try it out. A bit disappointing that the most advanced phone on the market has this noticeable lag when waking. I have never experienced this on any other phone... I tend to accidently double hit the power button just to have it wake a moment later followed immediately by the electron beam CRT power off animation!
What really grinds my gears is that this wake lag NEVER happens when plugged in to the charger.
nickshertzer said:
What really grinds my gears is that this wake lag NEVER happens when plugged in to the charger.
Click to expand...
Click to collapse
That's because charging holds a permanent wakelock.

[Q] Auto-lowering brightness when sleeped

Hi, I was wondering why our Galaxy's screen reduces brightness before going asleep. If you notice, pressing the power button the display doesn't turn off instantly, but it turns very dull for a brief moment and then it turns off.
Can you tell me why? It is quite annoying. Other phones turn off instantly, like many HTC's I've seen. Does this concern the SA+ screen? Do you know a fix?
Have a nice evening (21.30 here in Italy)
Only just noticed this now.
Why does it bother you?
Sent from my GT-I9100 using XDA
It does not, I was just wondering.. I'd like to know if it's a software glitch or if it's something about the hardware.
I don't think it's a glitch as I've seen many gs2 do it.
Sent from my GT-I9100 using XDA
Yes, I meant a firmware/kernel glitch but no one of the roms/kernels I've tried solved this out :\

AT&T LGOG E970 Overheating in pocket. Is there a 2 button unlock?

My LGOG E970 is overheating when I put it on my pocket and the battery is discharging very fast. Using the headphones I noticed that it was getting unlocked because it was dialing.
I configured pattern lock and the power button now instantly locks also quad core eco mode is on. However the phone still overheats. I installed Freegee, mention it in case it is relevant.
I suspect that the power button is constantly pressed when in the pocket and the screen keeps turning on. This brings me to my question: Is there a way to use two button unlock on this device? Like pressing power and then volume up to turn the screen on.
Any suggestions?
Thanks.
Sent from my LG-E970 using xda app-developers app
jaimesilva said:
My LGOG E970 is overheating when I put it on my pocket and the battery is discharging very fast. Using the headphones I noticed that it was getting unlocked because it was dialing.
I configured pattern lock and the power button now instantly locks also quad core eco mode is on. However the phone still overheats. I installed Freegee, mention it in case it is relevant.
I suspect that the power button is constantly pressed when in the pocket and the screen keeps turning on. This brings me to my question: Is there a way to use two button unlock on this device? Like pressing power and then volume up to turn the screen on.
Any suggestions?
Thanks.
Sent from my LG-E970 using xda app-developers app
Click to expand...
Click to collapse
Make sure to run a program such as Better Battery Stats to see if a rogue app is actually causing the overheating and battery drain, I'm willing to bet that is the case.
id10terrordfw said:
Make sure to run a program such as Better Battery Stats to see if a rogue app is actually causing the overheating and battery drain, I'm willing to bet that is the case.
Click to expand...
Click to collapse
Yes, you are right. There was an app draining the battery.
The same night I posted this I played around and removed some widgets and change them with others, the next day the problem was over. I suspect it was the Yahoo weather widget that came as factory default, but I can't confirm.
Now I'm using SnowJB with MysteryEmotionz kernel and it gets ice cold However I'm having issues with the external SD and WiFi but that's another story.
Thanks a lot!
Sent from my LG-E970 using xda app-developers app

where is the wake screen lag fix

Samsung note 2 running sch-I605 android 4.1.1 stock vraljb
rooted with latest version of casual
I get the screen lag when the screen goes to sleep it takes 2 seconds for it to turn back on
is there a fix? please point me in the right direction I did see apost where you need to recompile some jar files but thats beyond me
thanks
Its a side effect of the phone going into deep sleep and turning all the sensors off, if you really want it fixed mean bean has a wake lock in his rom to keep it from ever going to deep sleep.
I didnt have such great experience with his rom as far as batteru life goes but some get really good results.
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tw33 said:
Its a side effect of the phone going into deep sleep and turning all the sensors off, if you really want it fixed mean bean has a wake lock in his rom to keep it from ever going to deep sleep.
I didnt have such great experience with his rom as far as batteru life goes but some get really good results.
Sent from my SCH-I605 using xda app-developers app
Click to expand...
Click to collapse
Thank you for the response but the interesting thing is we have another note same everything software and root method but it does not suffer from
this issue any idea whY? I copied its power settings with no success..
It is a side effect of deep sleep, if you aren't experiencing it, there is probably an app leaving a wake lock on. Mean bean talks about this and how to force it. Someone posted a tweaked file for use with Beans and I've been using that . No lag for me and no decrease in battery life.
Sent from my Galaxy Note 2 rockin Beans 13 using Tapatalk 2

[Q] Need app to on and off the screen without using power button.

I am using Galaxy note 2 and want such a application which will on/off the screen without using power button and also it should not use the proximity sensor.
The screen on/off should work only with screen touch.
Can anyone please help me for this?
I know its not ideal, but theres a toggle to turn the screen off, amd then maybe the stylus removed to turn the screen on. Otherwise I feel like that anything touching the screen would cause it to turn on in pocket, similar to when I used to have the screen turn on in my pocket when I recieved a text, and my phone was constantly being "touched" with the bloop sound
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bittoo1111 said:
I am using Galaxy note 2 and want such a application which will on/off the screen without using power button and also it should not use the proximity sensor.
The screen on/off should work only with screen touch.
Can anyone please help me for this?
Click to expand...
Click to collapse
There is a feature in some kernels, Plasma for instance, that is called TouchWake. It will not do exactly what you're wanting, and there will be nothing that will because it would keep the phone from deep sleeping and drain your battery extremely fast (not to mention your phone would always be coming on in your pocket because the screen registers touch through clothes if they're thin like pockets are).
TouchWake is where when your screen times out you can set a time limit to just touch the screen to wake it back up instead of having to hit a button.
Other than TouchWake being built into certain kernels, for the use like I explained above, there is nothing remotely similar to what you're wanting. It would just drain the battery way too much because the screen will never be able to be completely powered because its always awake waiting on a touch.
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bittoo1111 said:
I am using Galaxy note 2 and want such a application which will on/off the screen without using power button and also it should not use the proximity sensor.
The screen on/off should work only with screen touch.
Can anyone please help me for this?
Click to expand...
Click to collapse
This is what I use for the same thing you need.....
https://play.google.com/store/apps/details?id=com.nd.android.surfaceaction.offscreen
It's a homescreen widget. Hope it helps
Home2shortcuts App you can customize screen off.
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shangrila500 said:
There is a feature in some kernels, Plasma for instance, that is called TouchWake. It will not do exactly what you're wanting, and there will be nothing that will because it would keep the phone from deep sleeping and drain your battery extremely fast (not to mention your phone would always be coming on in your pocket because the screen registers touch through clothes if they're thin like pockets are).
TouchWake is where when your screen times out you can set a time limit to just touch the screen to wake it back up instead of having to hit a button.
Other than TouchWake being built into certain kernels, for the use like I explained above, there is nothing remotely similar to what you're wanting. It would just drain the battery way too much because the screen will never be able to be completely powered because its always awake waiting on a touch.
Sent from my SCH-I605 using XDA Premium HD app
Click to expand...
Click to collapse
I use touchwake and have great battery life. There have been many arguments in different threads about whether using this mod causes intolerable battery drain, and all I can say is, for my phone, it has barely any effect on my battery.
bittoo1111 said:
I am using Galaxy note 2 and want such a application which will on/off the screen without using power button and also it should not use the proximity sensor.
The screen on/off should work only with screen touch.
Can anyone please help me for this?
Click to expand...
Click to collapse
I personally use Screen off and Lock donate. It allows you to have a home screen widget that you can make 100% transparent if wanted along with other levels of transparency. It also let's you change color of widget. Just has quite a few options.
Android...A New Digital Revolution Of Incredible Developers...
Moon rom has a lock
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demass430 said:
Moon rom has a lock
Sent from my SCH-I605 using Tapatalk 4 Beta
Click to expand...
Click to collapse
So does goodness. Both great options
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Oopsy. Not Home2shortcut, my apologies. What I meant was QCustomShortcut.
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billku said:
I use touchwake and have great battery life. There have been many arguments in different threads about whether using this mod causes intolerable battery drain, and all I can say is, for my phone, it has barely any effect on my battery.
Click to expand...
Click to collapse
I don't mean to say that under regular usage it would cause significant battery drain, I use it as well and have seen little to no change. I mean if the OP used it in the way he is wanting that it most definitely would cause significant battery drain because the screen would be constantly awake awaiting input instead of going to sleep after a set amount of time.
Even then touchwake wouldn't work for the OP unless he let the screen time out so it still isn't what he is looking for.
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shangrila500 said:
I don't mean to say that under regular usage it would cause significant battery drain, I use it as well and have seen little to no change. I mean if the OP used it in the way he is wanting that it most definitely would cause significant battery drain because the screen would be constantly awake awaiting input instead of going to sleep after a set amount of time.
Even then touchwake wouldn't work for the OP unless he let the screen time out so it still isn't what he is looking for.
Sent from my SCH-I605 using XDA Premium HD app
Click to expand...
Click to collapse
If you set the timeout to zero, then touchwake is constantly on, which is the way I've used it and there has still been no significant battery drain. I also haven't had any issue with it turning on in my pocket. I do, however, inadvertently turn it on often, which is why I wish Faux would activate his swipe2wake feature for his kernel app for the Note II. But he hasn't yet.
billku said:
If you set the timeout to zero, then touchwake is constantly on, which is the way I've used it and there has still been no significant battery drain. I also haven't had any issue with it turning on in my pocket. I do, however, inadvertently turn it on often, which is why I wish Faux would activate his swipe2wake feature for his kernel app for the Note II. But he hasn't yet.
Click to expand...
Click to collapse
I'm using Plasma and the way it is set up is there is there is a time limit to how long the TouchWake feature will be active after the screen times out, if its different on Faux or any others I have no clue.
I find it hard to believe that the battery drain for it being always on isn't significant, I'm not saying you're wrong but that its hard to believe. Its constantly leaving a part of your phone awake, no deep sleep, to scan for touches.
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Certain aosp roms have it in settings to remap your hardware buttons to perform different actions including screen off/on. I agree with you. It would be nice if these features could be baked into tw sometime in the future.
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I'm running nova launcher pro and it has gesture supports so I made a setting in Tasker so when I double tap the screen it shuts off. There's also an app you can have do this called screen off and lock
https://play.google.com/store/apps/details?id=com.katecca.screenofflock
shangrila500 said:
I'm using Plasma and the way it is set up is there is there is a time limit to how long the TouchWake feature will be active after the screen times out, if its different on Faux or any others I have no clue.
I find it hard to believe that the battery drain for it being always on isn't significant, I'm not saying you're wrong but that its hard to believe. Its constantly leaving a part of your phone awake, no deep sleep, to scan for touches.
Sent from my SCH-I605 using XDA Premium HD app
Click to expand...
Click to collapse
I know it's hard to believe, but I suppose the theory relates to idling a car under certain circumstances vs. turning it on and off over and over. There are instances where the former is actually more energy efficient than the latter (there are threads on XDA that discuss this theory, I can't remember where they are). Also, even though the phone isn't in deep sleep, it "idles" at a very low power usage rate. Again, for me, there is no significant drain at all. Last night, before I plugged it in to charge, the phone was at 53% after being "up" for 16 hours.
You can set any physical key to wake the device by editing gpio-keys.kl in /system/use/keylayout and putting WAKE at the end of the line.
This is how the home key wakes the device by default, you can also disable this by removing WAKE from that line.
Example:
key 114 VOLUME_DOWN WAKE
Would make the volume down button wake the phone.
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Here is a suggestion
Try using GO LOCKER and the lock screen setting add on.
Works very well on my NOTE Running Jelly Beans B20.
Plus you can juice up your lock screen.

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