[Q] Screen goes blank when coming out of sleep - Android Q&A, Help & Troubleshooting

I have cm 7.2
2.3.7
This is kind of odd. When the screen sleeps or if I turn it off myself, then when I try to wake it by using the power button or volume rocker button, the screen will turn on for half a second, then go blank. Its still on lock screen cause the home buttons are lit and I have to wait a few seconds for it to time out and try again. Its kind of hit or miss. Doesn't always do this. I've deleted dalvik, etc. I use screbbl pro. It never did any of this till CM, so I figure its associated with this somehow. Thoughts?

Related

Turn off display while in call?

Does anyone know if it's possible to turn off the display while in a call? On my HTC Touch Pro I was able to just press the power button to achieve this - but on the Hero the power button is also the hang up button.
Any ideas?
Actually it's supposed to turn off automatically.
IMO the problem isn't turning the screen off during a call, it's turning it back on when needed.
elcom said:
Actually it's supposed to turn off automatically.
IMO the problem isn't turning the screen off during a call, it's turning it back on when needed.
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Click to collapse
I agree completely... Is an annoying issue that display go away on call because if you need something, ie keyboard or see call duration you need to do something for have it back.
Why not try this app, which you shake to wake the screen - not tired it myself but worth a go
Shake Awake
If the screen goes blank during a call you can simply press the menu button to wake up the screen again. Just tested that and it works fine.
Still, it would be nice to be able to turn it off when I want and not have to wait for it to time out to switch the display off.
You can also press the answer button to wake screen while in a call.
As to shake-it-to-wake-it, with the non-stick coating on the device I would probably be likely to launch it out of my hand !!! haha
Sprint Hero
I just picked up a Spring HTC Hero this weekend and am finding the same problem. When I place the phone up to my ear the screen does not shut off. However since the end button is also the same button used to turn off the screen, I'm in a catch 22.
For now I have to wait for the screen to time out. Turning the screen back on is not an issue as many have mentioned.

[Q] Touchscreen stopped working. - solved

I was reading a book and the screen just stopped responding to finger touches, I think a reset might fix it but I can't switch it off. Long press on the off switch gives me the Android power options but of course I can't select any of them.
Any ideas? apart from waiting for the battery to go dead.
/edit solved it, long press of power and center button uintil you see the HP logo. I thought there might be some Android specific way.
For touchscreen not responding, I often just click power button to turn off the screen, then home to wake it up. That seems to fix it more often than not.
Next time you need to reboot, just hold down Home + Power for 10+ seconds

Takes a while for the screen to turn on after hitting power button?

Is it just me, or does it lag a little too much from the time you hit the power button to the time the screen actually turns on.
I don't recall my Nexus 7 ever having that hesitation. It's not like I have anything extra on my lock screen.
I notice this whenever I'm holding my N10 in a different orientation than what it was when the screen was last on (if I was in landscape, then the screen goes off, and then I try to wake it while holding it in portrait)
Same here. This is the only time there is any lag on wake.
I had a problem with mine where I would press the power button to bring it out of sleep. The display would come on for a split second and disappear for around 20 seconds before coming back again. Turns out it was LightFlow (notification light colour selector) playing up. After I uninstalled it, I didn't have any issues.

[Q] have all z2's got the touch screen wake issue or just done

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
Click to expand...
Click to collapse
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.

Samsung Galaxy TabS SM-T705 after the screen turns off, it runs on by pressing random

It all started 2 days ago, when watching a clash of clans replay the screen turned off for the energy saving thing. I pressed the power button to bring it back, but the screen didn't turn on, i could hear the game sounds, and the touch screen was working, after the replay ended i was able to tab the buildings in my village and hear the sound they make. I pressed some random combination of buttons, i think its power+volume down and the screen turned on. It happened a second time during that day, and i was able to turn the screen on again. But the day after that trick didn't work and the tablet was stuck with a black screen.
I tried a factory reset, but the menu for it wouldn't appear, the odin menu by the other hand worked fine. The recovery menu should appear when with the tablet turned off you press volume up + home + power in that sequence, and releasing the power button at the samsung logo screen. But the menu never appeared, so i navigated it blindly and i think i managed to reset it, at the next accension i was prompted with the personal information field, name, google account, time settings etc..
The phone started again, with all default settings, and all my files where gone (so im assuming the factory reset worked) but when the screen turns off it doesn't come back by pressing the power button, it comes after trying a few combinations (and again i think it is power + volume down and wait a few seconds).
So im worried it was all in vain, also the screen brightness is bugged, and changes the colors, the become reddish with low brightness and some colors disappear.
Edit: After i let the screen turn off for the third time today, it doesn't come back on. So im back at the black screen...

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