Develop Bugs

[Q] power button issue?

Hi all,
does anyone sometimes have to press the power button (when phone is completely turned off) twice (2 presses to turn on) sometimes?...
so just to confirm
- handset is off
- push power button once (sometimes doesnt come on
- push for second time (and powers up)
im defiantly pushing for long enough
iv have no issues with the button at all when in the UI or when locking/unlocking display
iv done a few tests where i have turned off. then went to switch on, with the same pressure and sometimes it starts with one, sometimes it starts with two presses,
do u think this is a fault? anyone experience this? normal?
just checking...
thanks heaps!

I had the opposite on my first one. When I pressed the power button to turn screen off, the screen went black for 1 sec and jumped back on lock screen.

brodiecb said:
Hi all,
does anyone sometimes have to press the power button (when phone is completely turned off) twice (2 presses to turn on) sometimes?...
so just to confirm
- handset is off
- push power button once (sometimes doesnt come on
- push for second time (and powers up)
im defiantly pushing for long enough
iv have no issues with the button at all when in the UI or when locking/unlocking display
iv done a few tests where i have turned off. then went to switch on, with the same pressure and sometimes it starts with one, sometimes it starts with two presses,
do u think this is a fault? anyone experience this? normal?
just checking...
thanks heaps!
Click to expand...
Click to collapse
to switch on device you have to keep pressed power button for few seconds or u can keep it pressed until you see lights at the touch keys.. :good:

Hi
brodiecb said:
Hi all,
does anyone sometimes have to press the power button (when phone is completely turned off) twice (2 presses to turn on) sometimes?...
so just to confirm
- handset is off
- push power button once (sometimes doesnt come on
- push for second time (and powers up)
im defiantly pushing for long enough
iv have no issues with the button at all when in the UI or when locking/unlocking display
iv done a few tests where i have turned off. then went to switch on, with the same pressure and sometimes it starts with one, sometimes it starts with two presses,
do u think this is a fault? anyone experience this? normal?
just checking...
thanks heaps!
Click to expand...
Click to collapse
I don't think many people would turn their phone completely off so haven't found the issue.
When you power off what will be happening is the phone is off as much as it can be, but these buttons are soft off, the battery is still connected and some power must be drawn to run the power circuitry to detect the button being pressed again to signal to power back up the phone, in the same way when you turn your TV off by the remote, power is still drawn to run the remote sensor on the TV.
To keep the drain on the battery as low as possible so the battery isn't completely discharged over months of storage I suspect the power chip waiting for the on signal again is only sampling every so often to save power so it can be in super deep sleep state. This means depending on where in this cycle you are when you press the power button it might seem like it isn't responding, so typically you have to leave it depressed long enough for it to be "seen".
The better option is to just to put your phone into flight mode if you don't want to be disturbed or want the phone off. I do this overnight and lose no battery power by the morning, so it is as good as off. You can add a button to your home screen to do this quickly, widgets are included already for that.
Regards
Phil

Mine does the same thing.. Sometimes it does it with waking up from sleep also.
Sent from my HTC One X using xda app-developers app

[Q] Screen not starting up for power button

Hi,
I started to get a weird problem since last week. I've had this phone for about 3 months now and never had any problem like this.
It all started one morning when I wanted to stop phone alarm. The alarm was going off but the screen was black. I pressed the power button to wake up, but it was still black. After couple of times pressing the power button the screen came up. First it was not that often but the situation started to get worse. It came to that I can sometimes cannot turn it on for a long period of time. I need to keep pressing power button, volume buttons and eventually it will come up.
This is what I've found so far:
1) When the power button is pressed, although the screen doesn't start up, I can see the three buttons at the bottom lighting up. So it is not a problem of the power button.
2) When the power button is pressed, although the screen doesn't power up, the screen seems responsive. I can feel the vibrations when I tap (I have a startup password)
3) When the phone is connected to a power supply, screen always starts up without a problem.
4) Screen will start up more frequently when the batter power is high.
It seems as though there is a connection between batters power and the screen not starting up. But then again, once the screen comes up (after not starting up), then it works fine, until I turn the screen off.
Has anybody experienced anything like this before?
I did a factory reset thinking it might be some application I installed but it didnt help.
I had to send this phone once to repair the speaker and cost more than $80 just for courier. I don't want to spend another to get this fixed.
Thanks.

I have this problem or a problem very close to this. I have a HTC One X (international version). I'm running the latest version and updates and the problem has existed for at least the last two updates.
Android Version 4.1.1
HTC Sense version 4+
Software number 3.18.401.1
I have the screen lock pattern turned on.
Sometimes when I hit the power button, the phone does not turn on and so I press it again and only after a third press does the phone turn on. I then unlock the phone and use as normal. So, several times per day I have to press the power button three times before the phone turns on. But other times I press the power button once and it turns on straight away. I've just turned the pattern unlock off to see if this makes any difference. I'll start to record the exact details of when I experience this and see if we can work out a common cause.
Hopefully if enough people report this problem then they can send out an update to fix this problem.

exazonk said:
I have this problem or a problem very close to this. I have a HTC One X (international version). I'm running the latest version and updates and the problem has existed for at least the last two updates.
Android Version 4.1.1
HTC Sense version 4+
Software number 3.18.401.1
I have the screen lock pattern turned on.
Sometimes when I hit the power button, the phone does not turn on and so I press it again and only after a third press does the phone turn on. I then unlock the phone and use as normal. So, several times per day I have to press the power button three times before the phone turns on. But other times I press the power button once and it turns on straight away. I've just turned the pattern unlock off to see if this makes any difference. I'll start to record the exact details of when I experience this and see if we can work out a common cause.
Hopefully if enough people report this problem then they can send out an update to fix this problem.
Click to expand...
Click to collapse
I'm pretty sure this is a hardware issue. I bought mine from Expansys and sent it back to them for repair. It's been more than a month and they say they're still reparing it.
In my case it was impossible for me to start the screen up with power button no matter how much I pressed it. The only thing that worked for me was to press the back of the phone just below the camera. So it seems like a hardware issue. But on the other hand, at times when I can't get the screen turned on no matter what I do, I'd turn the phone off and start again and the thing would start up like nothing happened. So while I'm pretty sure it is a HW issue, I'm not sure how a power restart makes it work.

For me I don't think that this is a hardware problem as it only started happening once I did the big upgrade from 4.0 to 4.1 and then it follows a specific pattern. That is three power button presses will always turn it on. Less frequently I also get a problem where the power button turns on the three lights on the soft buttons but the screen remains black. I then hit the power button to turn it off, and again to turn it on and the phone is back to normal again.
Is yours an international version? I bought mine an international version and had it shipped to Australia.

solved?
Hi - did anyone ever solve this? This is happening to me with my HTC desire X after having had the screen repaired, so I think it is hardware related, but the shop doesn't know how to fix it! My screen also does not turn back on when I want to end a phone call and pull the phone away from my face anymore. These problems seem related as they started at the same time. I would be grateful for help!

Nexus 7 (2013) Power button and booting problem

Long story short, 1 month ago my Nexus 7 (2013) got water damaged, I immediately covered it in rice and left it for a couple of days, and after turning it back on, have a weird issue.
The power button will not work what so ever, I've tried holding it in for over 60 seconds, aswell as holding in the volume buttons along with the power button.
The only way to turn it on is to plug the nexus into the mains. I then get the white LED flashing 5 times, which I assume means it's charging up from a completely dead battery.
After about 20 minutes of charging, the google logo will pop up, stay on for 3-5 seconds, then the unit will reset itself (screen goes off, then back on to the google logo, and repeats like that).
However....If i hold in the volume down button, it'll boot up like normal, everything works fine, but take your finger off the volume button and it'll reset and only boot to the google logo. Holding volume up will take it too the boot loader.
The issue is that at no point, (in the bootloader or once its booted in to the OS) will the power button work whatsoever.
I first assumed that the button was broken, and stuck to the ON position, so ordered a new button cable (which includes the power button, volume up and down, aswell as the microphone) but this hasn't done anything.
Wondering if anyone had any thoughts?

Power button doesn't wake up the phone immediately. 1 minute delay???

Hi all,
Problem: When the phone is turned on, locking the screen works beautifully. Once the display turns off, pressing the power button doesn't do anything... for about a minute. Then the display wakes up and everything is fine again. It doesn't sound like a hardware issue, as the power button works in recovery, and to lock the screen. The screen turns on instantly in recovery and when powering on the phone, so I don't think it's the screen's problem either.
Does anyone have any ideas to fix this problem? Thanks!

Question Black screen but still working. How to shutdown phone

Hi,
My Pixel 6 Pro screen went black, but I can still hear and feel that the phone is working. I used the volume up + power button to reboot it and now I touch the phone and I feel it vibrate as it's registering the touches. I also see at the bottom of the screen some white stripes flashing. It seems that the screen is damaged and I need a replacement screen.
Now my issue is that I can't seem to turn it off. As the screen is black, the only way to shut it down would be with hardware keys. But up until now, I haven't been able to figure out a way to turn the phone off.
Does anyone know how I can turn of the phone?
To replace the screen, obviously I need to turn it off first...

Usually long pressing the power button, but it may be different. As long as it gets fixed within a month or so it you can let it discharge until it auto shuts down. If more than a year old replacing the battery when repaired is a good idea anyway...

I tried long pressing the power button with no luck.
I tried volume down + power button for 20 seconds, didn't work either.
I tried volume up + power button for 20 seconds, this I think reboots the phone.

moleculezz said:
I tried long pressing the power button with no luck.
I tried volume down + power button for 20 seconds, didn't work either.
I tried volume up + power button for 20 seconds, this I think reboots the phone.
Click to expand...
Click to collapse
Power button only might take 20 or so seconds.
Otherwise just like it sit until repaired.

Power button + vol up + vol down. Keep holding down once you feel the phone vibrate. Takes you to the bootloader screen

The battery died.. so that's good!
Thanks anyways