One annoyance with my SGS2 (rooted, KE7) is that it takes a couple of seconds to turn on the screen when I press the power button. I've heard that this is because the CPU needs to wake up from a power saving mode. Is this true? Can it be disabled? If so, what impact does it have on battery life?
QuboidRC said:
One annoyance with my SGS2 (rooted, KE7) is that it takes a couple of seconds to turn on the screen when I press the power button. I've heard that this is because the CPU needs to wake up from a power saving mode. Is this true? Can it be disabled? If so, what impact does it have on battery life?
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I don't think it has anything to do with power saving mode - All Android devices enter this mode without problems waking up.
My theory is it's related to the voice command functionality. When you press the home button while the phone is awake, theres a similar delay in order to detect a double tap (to enter voice command mode). I think there's a bug in which this delay affects waking the device as well.
Related
Tried to turn on my XDA yesteday and the button fell into the device ! This caused not to be able to turn on the screen unless I got a call. I downloaded Vito SystemTools' button maping program which allowed me to make my calendar button (when held down) to turn the screen on and off. The problem is that turning the screen on and off is not doing the same thing as the power button did. I was under the impression that all the power button did was turn the screen on and off to save battery and prevent unintended input. However, now my battery dies in 6-8 hours of use compared to the normal 2 days. Obviously, there is somthing more that the power button does.
What I'd like to know from the developers is if there is a program called by the power button and how I should access it. The button mapper program allows me to map any program I want to (almost) any hardware button (not the volume button). If it's a DLL or somthin I can probably write a wrapper program for it with some pointers.
I'm also in the market for a dummy xda or just another power button if someone has one just to get it to look better. However I like the functionality of holding down the calendar button for 1 second to turn the device on/off and would like to keep that permanently.
-Kevin
The power button is probably hard-wired to some processor wake-up logic. So when you turn the processor off, it's going to be very hard to make it wake up by anything else. You could write something that makes it wake up very very momentarily, say every few seconds, to check for a button-press. But my guess is what you want is a new power button.
damn Well i'm waiting on a dummy phone auction unless anyone over here has one to sell me.
I got exactly the same problem, the only difference is that i managed to get it back and i putted some silicone glue in it. It works and don't ask me how ;-)
Anyway, why don't you just press on the call - hang-up , calendar, volume button to wake the phone up?
Than just change the settings in battery power to make it shut down after 5min or 10min. It should help you reduce your battery life time since the phone gets automaticly in sleep mode after that time.
good luck,
Yann
I have my phone set not to wake up without the power button being pressed. I can turn this off but then buttons get pressed in my pocket since I don't like belt clip holders.
power off the phone and remove the battery for a few seconds and then put it back in. Press your power button and after the phone screen turns on press and hold the volume down button until the phone boots up. It should enter safe mode and display some text near the bottom of the screen.
This loads the phone without any Play Store apps active.
tjamscad said:
power off the phone and remove the battery for a few seconds and then put it back in. Press your power button and after the phone screen turns on press and hold the volume down button until the phone boots up. It should enter safe mode and display some text near the bottom of the screen.
This loads the phone without any Play Store apps active.
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That's the way it was on the Droid Incredible 2. On the original Dinc, it was Volume Down + Optical joystick. You don't have to remove your battery to do this, though, or even turn the power off. A simple restart works.
IceDragon59 said:
That's the way it was on the Droid Incredible 2. On the original Dinc, it was Volume Down + Optical joystick. You don't have to remove your battery to do this, though, or even turn the power off. A simple restart works.
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what's the benefit of this besides the apps??
maybe theres a way to hold this key and that key to boot into s-off mode hehehehe!
Aldo101t said:
what's the benefit of this besides the apps??
maybe theres a way to hold this key and that key to boot into s-off mode hehehehe!
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lol. I wish. Safe mode, as in a desktop operating system, lets you enter the OS without allowing problems plaguing your system from apps or other things generally causing problems. You can uninstall apps or change settings to fix issues. If you're overclocking with an app like SetCPU and having problems, it lets you boot into the OS without the overclock which may be causing the issues. If the overclock is built into the kernel or set before boot, you'll have to find another way.
Can anyone tell me is it currently all z2 tablets that have the issue or are some fine, if it is a fw issue then shouldn't all if them have the problem? I'm just in the middle if sending mine back for a replacement so just wondered.
Thanks
James
What do you mean by touchscreen wake issue? Double tap to wake not always working ? I know I sometimes needed to tap mine 3 or 4 times before it woke, in stead of two times. But I disabled the features since it seemed to be the main cause for my issue with occasional ignored touches. I haven't really noticed any ignored touches since I disabled it.
well if mine goes to display goes to sleep and i then either tap or press the power button to wake the tablet the screen sometimes either completely freezes and i have to really tap hard to the tap to be recognised, the screen also stutters about.
When was the last time you fully shut down and rebooted the tablet?
Is the severity of the problem different when double tap to wake is off compared to when it's on?
Does changing stamina mode options make a difference? Such as with the limited performance option on compared to off?
You have the latest (.402) firmware, right?
Yeh i am on .402, stamina mode is off, same thing seems to happen regardless if i double tap or press the pwr buttom, when it happens i then have to press the pwr buttom again to turn the screen off, i then press again to wake, and when i wake the 2nd time its back being nice and smooth again.
I'm basically having the same issues listed in the below topic which ive also replied in:
http://forum.xda-developers.com/showthread.php?t=2771676
james_lpool said:
Yeh i am on .402, stamina mode is off, same thing seems to happen regardless if i double tap or press the pwr buttom, when it happens i then have to press the pwr buttom again to turn the screen off, i then press again to wake, and when i wake the 2nd time its back being nice and smooth again.
I'm basically having the same issues listed in the below topic which ive also replied in:
http://forum.xda-developers.com/showthread.php?t=2771676
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But have you tried disabling the double tap wake feature completely (in display settings) ?
And have you tried really powering off the device -not just turning the screen off, but holding the power button and choosing power off- leave it off for a minute and then power it on again ?
yes to bothm the double tap feature was off to start with when i was getting the issues, i turned it only only because i found it useful. i diont find the issues any different with it on or off.
also yes i do restart the tablet regularly, its not a constant issue it only seems to be if i allow the screen to time out.
anyway a new tablet has arrived today, i wont get to use it until later on though.hopefully it will be better.
I'm new to the V10 -- my old beloved Note 4 was quickly unravelling so I traded it in for this phone. Other than the loss of the stylus, I quite like it. The second screen is neat. The fingerprint scanner works much better than the Note 4's ever did. All in all I'm fine with it.
(Haven't rooted it yet. Eventually.)
I have run into an issue that's a little confounding, though. Occasionally -- about once a week since the last OTA update -- the screen will "sort of" freeze. By "sort of" I mean the phone is obviously still running (I can turn the display on and off) but I'm unable to navigate by touch. The UI elements don't respond, I can't swipe away windows, I can't access notifications...
...my Note 4 used to do this occasionally, and what I'd have to do is long-press the power button for 8-10 seconds, which would force it to turn off, then turn it back on, and life would go on. The V10 doesn't do that -- when I long-press the power button for 8-10 seconds, I get that stupid V10 voice control program (I call it stupid because it hilariously misinterprets my voice commands - my daughter and I basically turn it on whenever we want to be amused by a big dumb phone). In short, there seems to be no way to force the phone to shut down through hardware other than pulling the battery... which is what I wind up doing, but it's weird that there's no way to force a shutdown with the power button.
Is there a way to change this in the settings anywhere? Or would I need to root the phone and load a custom rom for that?
Thanks for any help you can provide...
Try long pressing the power button and the volume down at the same time...that works for me
I can remove and put the battery back in faster than i can long press to reboot.
Also a factory reset after an ota is recommended. It might fix the freezing problem.
Hi,
My phone has a faulty power button and I'm unable to get it fixed. I've found easy work-arounds for it for locking and unlocking the phone. However, I'm not sure how to turn on the phone if it's switched off.
When I connect the charger, even if the battery is 90% it won't turn on on its own...
njr08 said:
Hi,
My phone has a faulty power button and I'm unable to get it fixed. I've found easy work-arounds for it for locking and unlocking the phone. However, I'm not sure how to turn on the phone if it's switched off.
When I connect the charger, even if the battery is 90% it won't turn on on its own...
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Have you ever solve the problem? I've also the same faulty button..and I don't know how to power on without this button
maranric said:
Have you ever solve the problem? I've also the same faulty button..and I don't know how to power on without this button
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Nope, the only way I could turn it on was to open the back cover (very painful process) and then press the button area with a pin.
Couldn't get it fixed, so I had to change the phone.
I think there are possibilities in rooted phones, but otherwise the best thing to do is to keep a battery alarm at 30% or more, and keep it on charging whenever you can to avoid a power off. In power on, there are many ways of locking the screen in the MI UI.
njr08 said:
Hi,
My phone has a faulty power button and I'm unable to get it fixed. I've found easy work-arounds for it for locking and unlocking the phone. However, I'm not sure how to turn on the phone if it's switched off.
When I connect the charger, even if the battery is 90% it won't turn on on its own...
Click to expand...
Click to collapse
njr08 said:
Nope, the only way I could turn it on was to open the back cover (very painful process) and then press the button area with a pin.
Couldn't get it fixed, so I had to change the phone.
I think there are possibilities in rooted phones, but otherwise the best thing to do is to keep a battery alarm at 30% or more, and keep it on charging whenever you can to avoid a power off. In power on, there are many ways of locking the screen in the MI UI.
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Click to collapse
Thanks. I installed Blocco Schermo - Simi Studio v.3.21 , a simple app to lock the screen...and when i flagged the option "show in notification area" , the problem magically disappeared.. The Power On/Off button started to work again. I think it was an hardware problem (because the problem has come up after the phone was at the sunlight for hours in my car and went very hot) but now i think it's obviously a software problem.
Hi guys, I got the same problem too. Unfortunately, I drained my batt while playing games. So the problem now is I can't turn it on. Any idea how to turn on the phone without using the power button?
I solved it
Hi guys i solved a problem! You should hold main button + down volume button for 10-20 seconds. Then, when MI Remote opens, stay on the reboot and wait about 3 minutes, then stay on the reboot systems as well. Great work!
just change the volume flexible. its also not took much cost.