Develop Bugs

Nexus 7 2013 screen flashing randomly

When I use my Nexus 7, sometimes the screen will flash a black screen shortly, I track the logcat using the adb. But didn't find any
error information, it seems like the surfacefinger problem in Android 4.3. Dose anybody find the same problem?
------------------------------------------------------------------------
Thanks XDleader555
Reconnect the cable of LCD can fix this problem!!!!!! the casing of nexus 7 need to be opened, but it's not hard!
If you are not able to fix it, try to use the JWR66N version!

Can't say I've seen this issue. Then again, I don't have any of the issues some are complaining about. I feel so lucky to have gotten one with no problems.
Does the black screen appear when you're doing something specific or is it completely random?
Sent from my Nexus 7 using Tapatalk 4

Yes, completely random. And the black screen flash in a short time. Normally it's difficult to meet.
Try to use clean ROM, but still happen. Hope the problem relate to the software but not Hardware.

isacclin said:
Yes, completely random. And the black screen flash in a short time. Normally it's difficult to meet.
Try to use clean ROM, but still happen. Hope the problem relate to the software but not Hardware.
Click to expand...
Click to collapse
I have the same issue. For a split second the screen will flash to black (off maybe) then back to whatever I'm doing. I had my tablet since the release date, but this issue started maybe a week ago.

Having the same issue myself on Clean Rom and can't figure out a pattern. Has anyone found a fix for this? Do I need to file for a replacement? Thanks!
Sent from my Nexus 7 using xda app-developers app

when I use stock rom, screen randomly darken for just 0.1 sec. after I change to cm10.2. it hasn't happened.
Sent from my Nexus 7 using XDA Premium 4 mobile app

I am on the 8-29 cm10.2 nightly. I've tried both with and without faux's kernel same issue. Wiped my device fully last night. No luck.
Sent from my Nexus 7 using Tapatalk 4

This is so frustrating. I just passed my 30 days so I can't turn it back in for an exchange at best buy
Sent from my Nexus 7 using xda app-developers app

myron317 said:
This is so frustrating. I just passed my 30 days so I can't turn it back in for an exchange at best buy
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
You should still have a warranty. I think this might be some sort of bug that could be corrected maybe. It seems weird for something like this to occur out of the blue. I may go back to stock to test or try a different Rom that didn't use cm as a base.
Sent from my Nexus 7 using Tapatalk 4

Turn off auto brightness if its on. If it doesn't help you can try desabling HW overlays in Developers options settings

moosefist said:
You should still have a warranty. I think this might be some sort of bug that could be corrected maybe. It seems weird for something like this to occur out of the blue. I may go back to stock to test or try a different Rom that didn't use cm as a base.
Sent from my Nexus 7 using Tapatalk 4
Click to expand...
Click to collapse
Yes that's true and a good point. I just didnt feel like dealing with sending it in to ASUS and all that rather than just taking it back to best buy (laziness). I was thinking the same thing, that there would be a repair update and missed my easy exchange window. Never been on CM with this device so not sure if it's related. Fingers crossed, just an annoyance really... Thanks!
Sent from my Galaxy Nexus using xda app-developers app

Blackwidowman said:
Turn off auto brightness if its on. If it doesn't help you can try desabling HW overlays in Developers options settings
Click to expand...
Click to collapse
Doesn't seem to help. I'm starting to lean more and more to a hardware issue...
Sent from my Nexus 7 using Tapatalk 4

If the update and the factory reset doesn't work, I strongly recommend sending in the unit for RMA. While there, we can take a look at the hardware, and if needed, actually fix it for you.

My screen flicker (random black screen for a millisecond) went away after I checked the connection. I unplugged the screen, blew a little compressed air into the connection, and popped it back on. No screen flicker in sight after that.

XDleader555 said:
My screen flicker (random black screen for a millisecond) went away after I checked the connection. I unplugged the screen, blew a little compressed air into the connection, and popped it back on. No screen flicker in sight after that.
Click to expand...
Click to collapse
I am also experiencing the same problem. I assume you had to open up the tablet to do that? I might give that a try too.
Was anyone able to reproduce this fix?

XDleader555 said:
My screen flicker (random black screen for a millisecond) went away after I checked the connection. I unplugged the screen, blew a little compressed air into the connection, and popped it back on. No screen flicker in sight after that.
Click to expand...
Click to collapse
Hi, that is a good suggestion! I am
testing now! Wish have a good luck!

did it work?
isacclin said:
Hi, that is a good suggestion! I am
testing now! Wish have a good luck!
Click to expand...
Click to collapse
Isacclin, were you able to fix it?

I had the exact same issue and after reading this thread decided to take the plunge and check the connection. I am typing this on my Nexus now so I don't appear to have broken anything, however I think I have just seen the screen flash black so the problem may still be there.
Given disassembling the thing voids the warranty I would probably recommend not risking it for this issue. I'll let you know if I change my mind.

redders6600 said:
I had the exact same issue and after reading this thread decided to take the plunge and check the connection. I am typing this on my Nexus now so I don't appear to have broken anything, however I think I have just seen the screen flash black so the problem may still be there.
Given disassembling the thing voids the warranty I would probably recommend not risking it for this issue. I'll let you know if I change my mind.
Click to expand...
Click to collapse
I take this all back. After 24 hours of no black flashes I am very happy I took the risk.
The flash I saw when I was writing the above post must have been me being over sensitive to chrome redraws or something!

isacclin said:
Hi, that is a good suggestion! I am
testing now! Wish have a good luck!
Click to expand...
Click to collapse
redders6600 said:
I take this all back. After 24 hours of no black flashes I am very happy I took the risk.
The flash I saw when I was writing the above post must have been me being over sensitive to chrome redraws or something!
Click to expand...
Click to collapse
I looked at the iFixit pictures but they don't point out which cable is for the display. Can you advise which cable I should be cleaning?
thanks!

At&T i467 Question

Im rather new to the note 8 forums but I was curious if there are any plans anybody has heard of about this device getting 4.2.2. I cant seem to find a straight answer anywhere.
Sent from my SAMSUNG-SGH-I467 using Tapatalk 4

agent929 said:
Im rather new to the note 8 forums but I was curious if there are any plans anybody has heard of about this device getting 4.2.2. I cant seem to find a straight answer anywhere.
Sent from my SAMSUNG-SGH-I467 using Tapatalk 4
Click to expand...
Click to collapse
There is a UK version of 4.2.2 for the 5120, that works great. I screwed up and tried to put a 5110 ROM on, then had to scramble to find this one. Took me 4-5 days, but I got it finally.
Link to thread with UK 4.2.2. ROM

_Allan_ said:
There is a UK version of 4.2.2 for the 5120, that works great. I screwed up and tried to put a 5110 ROM on, then had to scramble to find this one. Took me 4-5 days, but I got it finally.
Link to thread with UK 4.2.2. ROM
Click to expand...
Click to collapse
This won't work. Your device is different than ours plus we don't have a recognized/confirmed way to unlock the bootloader.

esoh said:
This won't work. Your device is different than ours plus we don't have a recognized/confirmed way to unlock the bootloader.
Click to expand...
Click to collapse
Is it just me or does the display not respond sometimes?
Sent from my SAMSUNG-SGH-I467 using Tapatalk 4

Jeez, I'm not to sure this device is all that great..I'm using a Note 3 phone and this thing is a piece of crap compared to it lol. The screen not being responsive to touches sometimes are really getting annoying. Also I'm thinking AT&T may never update this thing. Seems like they always care about the initial release then it's history.

agent929 said:
Jeez, I'm not to sure this device is all that great..I'm using a Note 3 phone and this thing is a piece of crap compared to it lol. The screen not being responsive to touches sometimes are really getting annoying. Also I'm thinking AT&T may never update this thing. Seems like they always care about the initial release then it's history.
Click to expand...
Click to collapse
Lots of threads on this. Yes, the screen is unresponsive. It's a true bummer. I have hope that we'll see 4.2.2, hopefully in the next month or two. When it's released, I hope it has the screen responsiveness fixes and S-Pen offset fixes in the latest wifi version OTAs. I agree with you, I'm losing some patience with this device. As a whole, I love it. I need the pen, like the screen, like that I can use PAYG data, good specs, and the form factor is perfect. Don't like that it's not updated, the screen freezes, no unlocked bootloader, no custom ROMs, and not-so-great battery life.

Any fix for the recent apps button delay?

I hesitate to call it lag, since I assume it's waiting to check for a hold for menu action, but it doesn't exactly feel like quick multi-tasking in its current state...

I'm waiting for a fix for this too. For now I'm using switcher pro from the app store. Works great for me and actually easier to use one handed.

Check this out.
http://forum.xda-developers.com/showthread.php?t=2932841
Sent from the TermiNOTEr 4!

borijess said:
Check this out.
http://forum.xda-developers.com/showthread.php?t=2932841
Sent from the TermiNOTEr 4!
Click to expand...
Click to collapse
This worked for me! Not to derail but that's the first time I've switched over to art. It took about 20 minutes and afterwards the phone was so hot I couldn't touch the glass. Is this normal?

I was pretty surprised, but that actually helped. Still a tiny delay, but it's 1/4 to 1/2 of what it was before the switch to ART and switch back to dalvik. Thanks!

Makron said:
This worked for me! Not to derail but that's the first time I've switched over to art. It took about 20 minutes and afterwards the phone was so hot I couldn't touch the glass. Is this normal?
Click to expand...
Click to collapse
It was very hot for me as well after the switch. Thinking normal. It seemed to have made a difference but now this morning, it seems to be sorta back to normal now.
Sent from my SM-N910V using XDA Free mobile app

New OTA just pushed out

I just received a OTA push from AT&T. I'll update firmware version once my Note5 reboots.

Ends in OAH5
anyone know what it does?
Samsung pay?
Sent from my SAMSUNG-SM-N920A using XDA Free mobile app

ekerbuddyeker said:
Ends in OAH5
anyone know what it does?
Samsung pay?
Sent from my SAMSUNG-SM-N920A using XDA Free mobile app
Click to expand...
Click to collapse
Actually, it's AOH5, but I haven't figured out the changes yet.

Not sure if it's the fact that my phone was rebooted during the update, but it's very smooth after the update.

Same here. Anyone knows the changelog?? :\

54 packages updated. I didn't get a chance to pull the update. Probably just the stagefright stuff, samsung fixes, and at&t making their preloads more annoying. I don't see anything new popping up at me.
New APK: /system/priv-app/AmazonInstaller_ATT/AmazonInstaller_ATT.apk (this is in addition to the previous amazon shopping apk.)

Mine is rebooting now. ..

done12many2 said:
Actually, it's AOH5, but I haven't figured out the changes yet.
Click to expand...
Click to collapse
Mine's installing now....it just said performance and security enhancements. If that's actually true, I won't mind....Couldn't find it anywhere on the ATT website either. Anyone have any luck finding any background info on this?

quordandis said:
Mine's installing now....it just said performance and security enhancements. If that's actually true, I won't mind....Couldn't find it anywhere on the ATT website either. Anyone have any luck finding any background info on this?
Click to expand...
Click to collapse
I'm believing the performance part. I can't put my finger on it, but the phone is running nicely post update.

Mine's been having issues connecting to and keeping connected to LTE, maybe this fixes it?
Or maybe Carrier Aggregation??? Hey i can dream

Great update. Phone faster, smoother, more responsive with all bugs fixed AND it's solved the world famine problem.
Sent from my SAMSUNG-SM-N920A using XDA Free mobile app

so update now? or hold off for the tiny chance of rooting pre-update software...damn it

maximus96 said:
so update now? or hold off for the tiny chance of rooting pre-update software...damn it
Click to expand...
Click to collapse
I would just Update my friend!

This is going to sound really strange...but can anyone who has updated their phone -and- has a Samsung wireless charging pad that has been unreliable with maintaining a charging status see if it works better now?
I have read others who have Note 5s say that a software update helped fix the problems they were having with their Samsung wireless charging pads so I was wondering if this update helped ATT Note owners.
I'm trying to induce a flashing blue error in my pad right now, but so far I've re-positioned my phone about four times and it's stayed solid blue each time. Kind of frustrating because I just processed a refund for it via Amazon.

May just be my imagination but it seems that my fingerprint reader is a lot quicker and more accurate. I had been having issues since installing a tempered glass screen protector, but now works the first time every time.

Mr Orthoclase said:
This is going to sound really strange...but can anyone who has updated their phone -and- has a Samsung wireless charging pad that has been unreliable with maintaining a charging status see if it works better now?
I have read others who have Note 5s say that a software update helped fix the problems they were having with their Samsung wireless charging pads so I was wondering if this update helped ATT Note owners.
I'm trying to induce a flashing blue error in my pad right now, but so far I've re-positioned my phone about four times and it's stayed solid blue each time. Kind of frustrating because I just processed a refund for it via Amazon.
Click to expand...
Click to collapse
You know, now that you mention it, my Koolpad is working much better where before the update was very specific on where the phone sat. Weird...

czechpunk said:
You know, now that you mention it, my Koolpad is working much better where before the update was very specific on where the phone sat. Weird...
Click to expand...
Click to collapse
Not only that but hit dialer a few times look how fast it pop-up.
Running On Samsung Galaxy Note 5 N920A

Wonder if it fixes this.
http://arstechnica.com/security/201...ives-attackers-full-access-to-locked-devices/

czechpunk said:
You know, now that you mention it, my Koolpad is working much better where before the update was very specific on where the phone sat. Weird...
Click to expand...
Click to collapse
Yeah, It's like a complete reversal now. Before I had to struggle to find a position that kept the wireless charger blue (charging) but now I can't seem to get it to switch to flashing blue (not or minimal charging). Very strange. I mean, it's awesome...but I'm still hoping to get some more feedback before I cancel my Amazon refund.

I'm still waiting on a miracle root. I'm gonna hold off for a little bit. Lol
Sent from my SAMSUNG-SM-N920A using Tapatalk

Ghost Quick Scrolls, 8.1 issue?

Hi all,
I have recently been noticing ghost scrolls, where I would be slowly scrolling downwards, say, in the XDA app or reddit app, and randomly it would scroll quickly upwards when I lift my fingers. I was thinking this was a hardware issue so I got a replacement device on the way. However, I saw this https://www.reddit.com/r/GooglePixel/comments/7rczu2/scrolling_up_when_scrolling_down/.
Has anyone else been experiencing the same thing? I posted a vid and pic https://imgur.com/a/ny8fT. The second pic is touch input trace enabled in developer options, you can see there was a ghost long fast drag down to the bottom below the navbar.
Have been away from XDA for a while, please let me know if I am going against any rules about posting images hosted on other sites.

I wonder if something like this is what causes Twitter to randomly show me a different tweet when I tap on one. (maybe it's doing a phantom scroll briefly).
Sent from my Pixel 2 XL using Tapatalk

Devhux said:
I wonder if something like this is what causes Twitter to randomly show me a different tweet when I tap on one. (maybe it's doing a phantom scroll briefly).
Sent from my Pixel 2 XL using Tapatalk
Click to expand...
Click to collapse
yep, thats happened to me a few times before as well. Not twitter specifically, but in reddit I would click on a post, and somehow I would end up on some random other post like 2 post below it, and if I hit back once, I get to the post I originally intended to click on instead of the subreddit list.
So there must be some sort of ghost touches/scrolls on finger release, causing the unintended post to be queued up just before the intended one.
I'm surprised there hasn't been more people bringing up this issue (assuming this is indeed a software 8.1 issue and not an isolated issue in the touch panel).

Reddit has done that to me too, come to think of it.
Agreed that it's surprising we aren't hearing more of this. Makes me wonder if I should do a warranty swap.
Sent from my Pixel 2 XL using Tapatalk

Devhux said:
Reddit has done that to me too, come to think of it.
Agreed that it's surprising we aren't hearing more of this. Makes me wonder if I should do a warranty swap.
Sent from my Pixel 2 XL using Tapatalk
Click to expand...
Click to collapse
Yea, I have a replacement device on the way, but after hearing a few others experiencing the same issue, I'm starting to think it might not be a hardware issue after all.

ethantarheels123 said:
Yea, I have a replacement device on the way, but after hearing a few others experiencing the same issue, I'm starting to think it might not be a hardware issue after all.
Click to expand...
Click to collapse
definitely doesnt sound like a hardware issue.. ive experienced this on more devices than the p2xl and more so on stock.. u also might get it when ur data lags..
on the available custom roms i cant say i remember the last time it occurred.. either way, it cant be that bad to even remotely consider replacing it

elliwigy said:
definitely doesnt sound like a hardware issue.. ive experienced this on more devices than the p2xl and more so on stock.. u also might get it when ur data lags..
on the available custom roms i cant say i remember the last time it occurred.. either way, it cant be that bad to even remotely consider replacing it
Click to expand...
Click to collapse
Oh really? Have you only experienced this on 8.1 only, or also 8.0? I had the pixel 2 xl back in October/November on 8.0 and didn't experience any of this. I just repurchased the 2 xl several days ago and immediately noticed it within the first few hours of playing around with it.
I think it definitely is a software bug, if not a hardware issue. The touch input trace shows a ghost drag of a perfectly straight line to the bottom of the touch panel with an incredibly high Yv, I got one as high as 179. Normal hard flick scrolling would top out at around 30 or 40, so definitely something fishy going on here, whether it's software or hardware.
It happens for me like between 5 and 10 times within half an hour to an hour, and they are usually annoying enough where I lose my place where I was scrolling.

ethantarheels123 said:
Oh really? Have you only experienced this on 8.1 only, or also 8.0? I had the pixel 2 xl back in October/November on 8.0 and didn't experience any of this. I just repurchased the 2 xl several days ago and immediately noticed it within the first few hours of playing around with it.
I think it definitely is a software bug, if not a hardware issue. The touch input trace shows a ghost drag of a perfectly straight line to the bottom of the touch panel with an incredibly high Yv, I got one as high as 179. Normal hard flick scrolling would top out at around 30 or 40, so definitely something fishy going on here, whether it's software or hardware.
It happens for me like between 5 and 10 times within half an hour to an hour, and they are usually annoying enough where I lose my place where I was scrolling.
Click to expand...
Click to collapse
prolly 8.1.. i got mine around december late nov. pretty sure its software related.. they had an issue with touch on the lockscreen right?

It seems like so many touch issues with 8.1 release. For this reason, I am still using 8.0.
https://productforums.google.com/forum/#!msg/phone-by-google/FfzV1578L8Q/1HcWw3CCAQAJ
https://issuetracker.google.com/issues/70344455

ethantarheels123 said:
Yea, I have a replacement device on the way, but after hearing a few others experiencing the same issue, I'm starting to think it might not be a hardware issue after all.
Click to expand...
Click to collapse
Any update with the replacement device? I am having the same sporadic ghost scroll: I'll be scrolling down a page on reddit or slickdeals app (happens with other apps as well), and randomly it'll perform a strong up-scroll... I notice it more often when I lay in bed on my side, and have the screen orientation locked to portrait, resting the phone on the bed horizontally...

ayoraider07 said:
Any update with the replacement device? I am having the same sporadic ghost scroll: I'll be scrolling down a page on reddit or slickdeals app (happens with other apps as well), and randomly it'll perform a strong up-scroll... I notice it more often when I lay in bed on my side, and have the screen orientation locked to portrait, resting the phone on the bed horizontally...
Click to expand...
Click to collapse
Replacement device has the same issue, so this is definitely a software bug. Hopefully Google fixes it soon in the next patch update.

Nexus 6P here. I started getting these ghost touches with the last security update. 8.1 is the problem, not a solution.

My mom has the same issue of touch on places she doesn't touch, on Pixel XL.
Could it be the same?
Here is a video about it that I took, just by scrolling in the settings screen:
https://drive.google.com/file/d/1JCsTuMDvMNHh0CO7sF7yoLFT26uNIhUp/
It's a bit hard to reproduce, but it occurs eventually.
Has anyone tried to use Android P, and see if it helps?
Anyway, I've reported about this here too:
https://forum.xda-developers.com/pi...h-pixel-xl-t3807188/post76879468#post76879468

Any fixes yet?
I know this is old, but I wanted to know if anyone found a fix for this. I eventually found an Oreo 8.1 Rom that I like and this is the only issue that's bothering me.