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One stuck on, wont soft reboot- home and return flashing

I think I was holding down the power while it was locked. it didnt reboot bus is now instead stuck with a black backlit display panel. home and return is on permanently and the charge light is also lit, despite not being plugged in.
holding down te power button for any length of time just makes the home and return flash for a minute and then back to solid.
no combination of power and volume up/down makes any difference. just flashing home and return lights.
HELP
do I just have to wait for the battery to run out?

Wait I'm a bit confused ...what current state is your phone in? Is it booted up if it is just adb that *****

a box of kittens said:
Wait I'm a bit confused ...what current state is your phone in? Is it booted up if it is just adb that *****
Click to expand...
Click to collapse
it was booted up. now it's just a dark screen with backlight, home and return buttons and charge light lit
plugging in USB and runningg adb reboot just says device not found

actually- when I plug it into USB it appears as in device manager for a few seconds
adb reboot during that period gives 'device offline' rather than device not found...

Screen won't turn on - Bricked?

I was in the middle of installing drivers for my device and was getting from ADB type errors using the supertool.
I didn't get far, and after getting the error i unplugged and turned off my screen and now it won't turn back on.
When i plug it into my computer it won't detect the device.
I had it for less than 30 minutes! Any advice here?
:sadly i've rooted and flashed many a phone, not sure what i did wrong here:

Hold vol down and power until it vibrates, then let go of power and hold vol down till fastboot. If you can't get to that, you're probably pretty bricked.

Note, there does not appear to be a vibrate motor in the Fire7. So no vibrate feedback.

Broken power button, any way to boot?

I just bought a Nexus 6 on Ebay for cheap. (famous last words, I know, but I'm a cheap bastard) Seller stated power button wasn't working, but could still use an app like volume 2 power to wake up the device. I got a project fi sim and everything works except the power button. It has been working great but I let the battery die last night, is there anyway to get the phone to boot without the power button? I tried an ADB reboot, but my computer doesn't even recognize that anything is plugged in when the power is off.
I actually bought another power/volume switch and installed it. It will work to power up the phone, but if I try and use it to turn the screen off, it gives me a prompt to turn off the phone and then about 5 seconds later it reboots. I decided that was worse than a completely broken switch, so I but the broken one back in. I'm going to buy one more switch to see if I get the same behavior. I was just wondering if anybody has seen this behavior before?

Research on here and via google shows no way to boot without a broken power button. See the response below! Good info to know.
Luckily, when I got home I tried my replacement power/volume switches again and I did not have the issue with the phone rebooting. I think maybe I had them wedged in too tight the first time I installed.

altarity said:
Research on here and via google shows no way to boot without a broken power button. Luckily, when I got home I tried my replacement power/volume switches again and I did not have the issue with the phone rebooting. I think maybe I had them wedged in too tight the first time I installed.
Click to expand...
Click to collapse
My power button is broken. There is a way to boot it, its a bit inconvenient but whatever it works for me. I didn't like the 6P so I am waiting for the new Nexus.
To power on:
-Hold volume button down + plug in usb cable connected to computer. You should boot into the bootloader.
-Run command:
Code:
fastboot continue
-You will immediately boot.
I then had to remap the power button to volume down so I could lock the screen and such.
To edit:
-Pull the file
Code:
adb pull /system/usr/keylayout/Generic.kl
-Change "VOLUME_DOWN" TO "POWER" in Generic.kl
-Push the file
Code:
adb push Generic.kl /system/usr/keylayout/Generic.kl
-Reboot
-????
-Profit your volume down button now acts as the power button. To change volume, press the volume up button and adjust volume with the slider in the volume panel.
While it appears your issue is fixed, I think this might be helpful to other users who may search for this answer!

Thanks
Sent from my Nexus 6 using XDA-Developers mobile app

Will that work with an unrooted Nexus 5 as well?
Thanks.

P_Raposo said:
Will that work with an unrooted Nexus 5 as well?
Thanks.
Click to expand...
Click to collapse
Probably, since it's a Nexus. But the answer is to try and see. Or ask in the N5 forum. Hard for us N6 users to test without a N5.
"Good judgment comes from experience, and a lot of that comes from bad judgment." - Will Rogers

to do the fastbook command, does your computer have to be in a terminal mode or is there an interface that comes up when you perform below?
-Hold volume button down + plug in usb cable connected to computer. You should boot into the bootloader.
-Run command:

cacheeg said:
to do the fastbook command, does your computer have to be in a terminal mode or is there an interface that comes up when you perform below?
-Hold volume button down + plug in usb cable connected to computer. You should boot into the bootloader.
-Run command:
Click to expand...
Click to collapse
You need to install fastboot on your computer, and then open a terminal.
Fastboot is part of the Android development kit from Google, but it is probably easier to install a package like this one:
https://forum.xda-developers.com/showthread.php?t=2317790
(minimal adb and fastboot)

N6 power button stopped working, now I can't turn phone on

My power button stopped working a couple days ago but I was still able to wake device with volume buttons. I was worried that if my phone were to shut off I wouldn't be able to turn it back on so I booted into bootloader and was going to try and flash "oem off-mode-charge 0" (which should then make the phone power on when plugged into charger).
At the time I couldn't detect the device using fastboot and as I was searching around on my computer the screen on the phone turned off (was in bootloader at the time). I'm not sure at this point if my phone was on and that both the power and volume buttons were not waking device or if the phone turned itself off.
I have tried the hold the volume down and plug the charger in trick to try and get back into bootloader but nothing happens. When I plug phone into my computer it takes about 20 seconds but I get the little windows ding that something has been connected but phone is still not responsive. I'm starting to think I'm a little screwed here but welcome any input.

You just looking to get the screen to light up so you can implement a way to use the device without the power button? You could try gravity screen or something but first things first...
If its not lighting up on plugin have you tried connecting to a computer and opening ADB and issuing the command adb devices followed with adb reboot. If you wanna go back to bootloader just adb reboot-bootloader. That will restart device so screen is back on and I would turn on the Ambient Display mode so when you pick it up the screen comes on or get a volume power button app or gravity screen app that turns on when you take it out of pocket. Thats all I can suggest and hope any of this helps.

With phone plugged into computer, nothing shows up when I check adb devices or fastboot devices. I guess I'm unsure on what state my phone is in. None of the buttons do anything and nothing happens when I plug my phone into my wall charger (no charge light or screen on). The only response I can get is when I plug the phone into my computer windows makes a noise.
Anyone know what happens when a powered off phone gets plugged into the computer? Does windows make the little noise indicating a device has been plugged in even with it off?

It does not make a noise if its off.. That much I know. Interesting though. Are you sure you have the correct drivers installed for your nexus phone if you are on windows. Go into hardware manager by right clicking on my computer and make sure that its reading it correctly in usb devices without a yellow triangle next to it.

I should have the correct drivers. I just went ahead and reinstalled them through the nexus toolkit. In device manager it says: unknown USB device (device descriptor request failed).
I checked adb devices before all this happened and it displayed correctly. I then rebooted into the bootloader but the fastboot devices command did not show anything. It was shortly after that that the screen turned off. Will the screen normally time out when in the bootloader? I'm wondering if my phone is still in the bootloader with the screen off and both power and volume buttons non functional.

Only thing I can think of is to wait for it to die, then volume down + plug in to pc and when bootloader screen appears issue command fastboot continue and it should boot up. Then get something to remap key or an app. If this all fails after it dies and you restart it assuming debugging wasnt on or its just reading phone as media device of sorts not allowing adb then you may have to get the power button assembly possibly and install it yourself or open the back case and hit the power contact under the button and see if you can get it on. Thats all the ideas I have.
I'd also suggest that after you reinstalled drivers make sure you did a reboot and then plug in the device and also try using a different USB port and or USB cord also as odd as that sounds Ive seen it work before. Im pretty tapped on ideas tho. Do you know if you had usb debugging enabled?

Wireless charger
Sent from my Nexus 6 using XDA-Developers mobile app

Power Button replacement is pretty easy and cheap, there's a Tutorial
On YouTube

coremania said:
Power Button replacement is pretty easy and cheap, there's a Tutorial
On YouTube
Click to expand...
Click to collapse
Ok, cool. I'll take a look.
Managed to get it back into the bootloader this morning. So I guess this is a PSA, if your screen times out while in the bootloader, the volume keys will not wake device so since my power button is broken I couldn't wake it. At that point, the phone is in a state where it cannot receive any fastboot commands, even though it is in bootloader with the screen off. What I had to do was wait overnight for the battery to drain and have the phone power itself off. At this point the volume down plus plug in charger trick worked to get it back into the bootloader with screen on. At that point I was able to 'fastboot reboot' back into system.
Thanks for the insight people

double post

coremania said:
Power Button replacement is pretty easy and cheap, there's a Tutorial
On YouTube
Click to expand...
Click to collapse
It's easy but also annoying. Removing the 18 screws is the most annoying part

clapper66 said:
It's easy but also annoying. Removing the 18 screws is the most annoying part
Click to expand...
Click to collapse
I think the Nexus 6 deserve it

brumby05 said:
I should have the correct drivers. I just went ahead and reinstalled them through the nexus toolkit. In device manager it says: unknown USB device (device descriptor request failed)......
Click to expand...
Click to collapse
Driver issue.
Remove/uninstall the drivers from your PC when the phone is connected.
After that reinstall the adb/fastboot drivers.

N6 - Power mapped to VOL DOWN; turned off and can't get it back on
Hi all, I had to remap my power button - I mapped it to VOLUME DOWN. The other day I voluntarily powered down my N6 at a test center.....and haven't been able to get it to respond since. I do have a Pixel 2 XL on the way - but not that sure I'll want to keep it. The N6 is so sweet.
I've tried holding the volume buttons (POWER and VOLUME UP) for like a minute, but nothing. When I charge it, I see the battery symbol (full) but only for about 5 seconds.
ADB does not see any connected devices. Wug's NRT does not see any connected devices. I'm at a loss and afraid that I've lost my N6 and will have to use the Pixel 2 XL regardless what I think about it.
Any other ideas?

JMacD said:
Hi all, I had to remap my power button - I mapped it to VOLUME DOWN. The other day I voluntarily powered down my N6 at a test center.....and haven't been able to get it to respond since. I do have a Pixel 2 XL on the way - but not that sure I'll want to keep it. The N6 is so sweet.
I've tried holding the volume buttons (POWER and VOLUME UP) for like a minute, but nothing. When I charge it, I see the battery symbol (full) but only for about 5 seconds.
ADB does not see any connected devices. Wug's NRT does not see any connected devices. I'm at a loss and afraid that I've lost my N6 and will have to use the Pixel 2 XL regardless what I think about it.
Any other ideas?
Click to expand...
Click to collapse
Wow - just got my N6 to boot using this little tip I found on Reddit - https://www.reddit.com/r/AndroidQue...ny_way_to_turn_on_phone_without_power_button/
I was holding down the Vol Up and Power buttons (which are both the Volume bar since I remapped my power to Vol Down), but I hit 'enter' on the 'fastboot continue' text in the CMD prompt just after I plugged in the USB and the battery icon came up. It booted into bootloader mode briefly first, then went into system reboot. Whew!

I think your button assembly is broken and I would replace it. You could try the work around in Broken power button, any way to boot? by altarity, post #3.
"Good judgment comes from experience, and a lot of that comes from bad judgment." - Will Rogers

LOS13 MM [titan] misbehave

Hello,
This device had been flashed with LOS 13. It was working and functional, but some configuration(?) lead it to dead(?) screen! The Power, Volume +/- buttons aren't able to bring it back, neither touch screen. LED light keeps blinking.
I can't say for sure, but the option 'Do not turn screen on when pluging microUSB power charger/AC outlet.' was toggled to TRUE and some other tweaks I did at same time. So device suspended, then connected power cabble, next pressed power button. Frustration time, device went off, no signal of display viewability/working/etc.
I started trying to debug what happened: attached to Computer USB, from where it'd flashed, terminal prompt, ./adb devices and ./fastboot devices has no listing of it. Again, the white LED light keeps blinking.
What else can I do? Please help!? I have no working device atm and all ears to follow instructions/troubleshoot attempts/etc!