[Q] Screen flashes black, then back on - Nexus 7 Q&A, Help & Troubleshooting

I have tried several rom/kernel combinations on two Nexus 7's and noticed that while doing normal internet surfing or using basic applications that the screen will black out for second then come back on and resume where it was. I noticed some posts on this in the android development sections, yet no one seems to have a fix. Is this a software thing or a hardware thing?

I noticed this when I installed CM10 based PA, so I guess it's a ROM issue.

Its the surfaceflinger issue. They did something recently to it and im guessing dont realize its a bug.. but let me link you the fix it will work on any ROM.
surfaceflinger-fix.zip Flash in recovery and enjoy.

Related

home/menu/back/search buttons dont work at all

My dad's G2 after the gingerbread upgrade started to act dumb, now the home/menu/back/search buttons dont work at all, I did factory reset, cache cleaning, erased sd card and nothing! I have been looking on google for solutions and nothing, but I have found some people having the same issue after update
same here
mine stoped responding
all four capacitive front buttons are dead
I'm having the same issue, except my phone was already rooted and running CM 7.0 without any issues to report. I have barely been using my G2 lately because I have an iPhone 4S as well for work, and it gets much more attention these days. I just noticed today that none of the aforementioned buttons work at all any more, even after reboots. Tried reinstalling, upgrading to CM 7.1, even tried MIUI's latest to see if it was some software glitch, still nothing. It just seems so weird given nothing else is wrong with the touch screen at all.
I've done some searching as well and haven't been able to find any solutions for this issue. Anyone have any updates? Is this simply a hardware issue?
mine was doing that with the tiamat kernel
hey for those that have this problem and are using cm7 try using zdunes patcher to get the tablet buttons

[Q] Nook app screen goes black on E-mags!

Just checking if anyone else has the same issue since installing ICS. I know that the B & N Nook app has never been the most stable app and has always been a little glitchy, but now when I open up one of my e-magazines, if I try to zoom into an article or a picture the whole screen goes black. It doesn't happen all the time but it is quite frequent. I have tried a few different mags and have encountered the same problem. Not sure if there is something in the settings I can alter to alleviate this glitch? Never had this particular problem before the update! Any suggestions?
P.S. I have a non rooted US WiFi stock ICS version.

[Q] Camera problems.

Hello
I have been having some problems with the main camera on the A500. It has different tints to it. Sometimes the picture seems to be divided in 4 and all 4 squares have a different hue to them. Restoring to factory settings seem to take care of it for a while. Initially I thought it was "skype" that messed it up, but it is not.
I just restarted the tablet and the camera is giving me a yellow tint, with a clear horizontal stripe about 3/4 inch wide through the middle.
The tab has stock 3.2 on it.
I was wondering if anyone has experienced similar problems and if there was a solution to the problem.
Thank you
Well, I would think the problem seems to be some app/apps you have installed. Based on when you do a factory reset, it goes away.
I would just do another factory reset. Then verify it went away. Run it for a couple of days WITHOUT installing any apps. This will probably rule out a hardware issue.
Then install apps, 1 at a time. Use the camera, and look for issues.
Thanx. I will give that a try.
I traced it back to Swift Key X keyboard for tablets. How is that even possible?
Also yahoo messenger is another one that ruins the camera. As soon as I install any of those apps and reboot, the camera is back to normal.
Does anyone out there use either of those apps?
mobilebone said:
I traced it back to Swift Key X keyboard for tablets. How is that even possible?
Also yahoo messenger is another one that ruins the camera. As soon as I install any of those apps and reboot, the camera is back to normal.
Does anyone out there use either of those apps?
Click to expand...
Click to collapse
So, everything is ok?
Rule #1,
Stay away from apps meant for phones.
Yes, they "may" have tested it it on "1" tablet, then gave it a clean bill of health. Maybe.
Moscow Desire said:
So, everything is ok?
Rule #1,
Stay away from apps meant for phones.
Yes, they "may" have tested it it on "1" tablet, then gave it a clean bill of health. Maybe.
Click to expand...
Click to collapse
I thought it would be ok. But after restarting a few times, the camera colors are off. I'm going to root and install a custom 3.2 to make sure it is not the hardware.
Spasiba for all your help )
any news about this problems.
it seems that my iconia has the same problem- i never noticed it because i dont use the rear camera.
i sold it it today and the guy who bought has described something like what you folks are talking about
the strange thing is that i had done a clean boot before i sold it, and the buyer hasnt installed anything on it yet.
im waiting to hear back from him after he tries another clean boot.
anyone else have any ideas ?
I'm having the same problem. I don't use it much, but the camera was ok before. When I tried using it this weekend, it showed colored translucent squares on the sides. It is not a config problem, as there are no effects turned on. The front camera works 100%. I will post a sample when I get home.
If I change the "whites" config to Incandescent, it kind of solves the problem. Sometimes, the squares appear, but not for most the time.
I believe this is not a harware issue, unless that whites configuration is made with hardware (highly doubt it). I don't have Swift key, or Yahoo messenger, or any other apps that use the camera (other than Skype, but it was already installed when the camera worked).
Did anybody find a fix to this? It seems it is only a problem on stock 3.2.
Edit: not an exclusive 3.2 stock issue, it appears that custom roms have this problem as well.
I have the same issue after ICS ota upgrade...
Any ideas?
I haven't had the issue since the ICS upgrade. Only tested once or twice, but it is working properly.
What I did to partially fix it was changing the White Balance to "Incandescent".

[Q] Nexus 4 Freeze and Crash

Hi All,
I'm currently experiencing a problem, that I know has popped up on this forum a couple of times, but not for the Nexus 4 specifically.(As far as I know....)
The problem appears to be random freezes, where the device just stops, screen freezes, no hardware or software buttons respond, and requires the power button to be held down for a few seconds to restart... It happens once or twice a day, at random intervals, mainly when i'm at the home screen or just browsing Chrome (Beta).... My Nexus is running the latest Nightly of CyanogenMod 10.1, build 20130529, although this was happening on the RC1 build too... Also running the latest franco.kernel 3.4.0 and Clockwork Recovery. Haven't partitioned, restored any backups etc as of yet. I also have about 230 apps, so if it could be software related, there's i high chance one of those has got something to do with it!
A suggestion or solution that doesn't involve fiddling around with ROMs, kernels and other stuff would be great, i'm not much good at that sort of thing and don't allocate much time to fiddling about with my phone, but nevertheless if required i could give it a shot....
Thanks,

SM-N900W8 & CM11 M12 bugs and issues :(

I have a Canadian Note 3 (SM-N900W8), it's KNOX 0x0 rooted and I have CM11 M12 installed. I have been using only the M builds since I got this phone, I didn't even set up Touchwiz when I got it, I rooted and installed Cyanogenmod out of the box.
Now, with the new CM12 builds coming out, what happened to CM11, are they going to fix the remaining issues? Or did they just bail on legacy KitKat users because I'm having TONS of problems and I don't want lollipop, it runs like absolute crap for the nightlies right now and CM11 M12 isn't much better. Bluetooth takes a couple of attempts to connect, when it does my phone runs super slow to the point it force restarts. For instance, if I'm driving around, listening to music on the car stereo, pull over some where, find a new album on Google Music, start playing that, it's all good, do this a few times, every time I use my phone it gets slower and slower until it force restarts and then bluetooth has trouble connecting again. I've tried this on a few other vehicles of different brands and aftermarket stereos and it's the same result.
Audio is all funky when bluetooth is on too, it sounds like robots for the system sounds and if bluetooth drops while it's connected the music starts playing from the phone and sounds all roboty. I always do clean flashes too and the latest Paranoid Android GAPPS every time I reflash, the ROM is fine out of the box, works flawless for the first few days but after awhile, it becomes so bad I have to backup, wipe, reflash, and start over for another few weeks.
Another issue is somewhere between M8 and M12 one of the builds corrupted my SD card, I tossed in a second new card, it was corrupted again, FutureShop won't give me another one and said my phone is breaking them so I'm SD-less right now.
There are also quite a few apps that force close, but always at random, it's never when doing the same thing over and over, for instance, I can be scrolling through G+ and it tells me settings has stopped working, wasn't even using settings, didn't even have it open, haven't clicked it since booting my phone, just randomly stops working for no reason, this also happens all the time with the Camera, it says it just stops working when I haven't even used it and then if I try to use it, it says the camera is disconnected and won't work until I reboot.
I turn my phone off every night while it's charging and turn it back on every morning so every morning it gets a fresh restart, and I have to restart my phone probably 5ish times a day, if I'm using bluetooth more then normal then there's quite a few more unintentional reboots in there as well.
The last issue, which is a known issue is NFC not working, is there a fix for this yet? I kinda miss this feature and with how flawed CM11 is getting I don't know where to turn since they always seemed to be the most stable out of everything I've tried.
Any before anyone says Temasek's CM builds, I tried it, the final for CM11, it was worse then M12, it's exactly the same as M12, but every issue happens more frequently. Also, the pull down menu (when pulling down from the top right to show toggles), the bottoms of the last row was cut off so it didn't look very appealing either, it also used WAY more battery life, I usually get a full day out of one charge, so around 18 to 20ish hours on one charge, with temaseks cm11 I had to charge my phone half way through the day, sometimes my phone would just die on me without me knowing, the battery usage was always Android System.
A new problem that just happened lastnight was Google Keyboard was deleted and only the voice search would work, but "voice search can't be reached" so I couldn't search for another keyboard app from the playstore. I also used the stock GAPPS so AOSP keyboard is replaced with Google Keyboard, I had to reflash again this morning because I couldn't figure out the keyboard thing, there wasn't even a keyboard under languages in settings so I had no options to pick which keyboard to use. When I reflashes this morning I used the Modular GAPPS to it keeps the AOSP Keyboard just in case this happens again but I'm getting really tired of only having a reliable phone for a few weeks.
So, are there any fixes for these issues?
Bluetooth taking multiple attempts to connect
Bluetooth forcing random reboots
Bluetooth making audio from device all funky and sounds like a robot
Corrupting SD cards
Random system apps stopping without me even using or opening them
Google Keyboard vanishing
Are there any stable ROMs I could try for the HLTE? Maybe one that has working NFC? I'm almost thinking of going back to stock *throws up in mouth* but I don't know what else to do with how many bugs there are and Lollipop is only getting worse with the issues.
I'm also trying to avoid Lollipop because everything is white, Note 3 is an AMOLED display, each pixel illuminates on it's own so white screens use WAY more battery life then black ones which was a feature of Temasek's CM11 that I liked, had the option in settings to make everything black like the good old days.
So guys? Really out on my luck here, not sure what the next step is, any fixes for these problems? Any other ROM's I could try? Would flashing a new recovery and reflashing CM11 M12 fix some of these issues? I'm using Xiaoli CWM v6.0.4.7(20140125). Would the fact that KNOX isn't tripped have something to do with this? I really don't understand why there aren't more posts for these issues which leads me to believe I'm one of the only ones experiencing them.
Any help or suggestions would be greatly appreciated
EDIT:
I forgot to mention that when recording audio or video, it's as if the mic gain is set on full so even the slightest sound is pure distortion, normal talking volume and it clips, I found an app that lets me choose between the mics and when I pic the external mic, it's all muffles as if something is covering it but my phone wasn't in a case while I was testing so I'm not sure what the deal is there but I can't record any decent audio with this and when I record in 4K using Cinema FV-5, all the videos turn out looking like Anaglyph 3D but all pink and green, it's really weird and I don't understand why, but 1080p at 60fps works fine.
I am on CM12 and luckily have had no issues at all. I came from KK 4.4.4 and still have the NB7 BL and modem. I tried one of the guys slim ROMs alpha builds but had issues (probably operator error) but I've tried Bluetooth, GPS, WiFi , LTE etc and everything is good. Not sure what to tell you. I do however always wipe internally and d/l all my apps again through WiFi. A bit cumbersome I know but it won't give me any residual data.
Sent from my SM-N900W8 using XDA Free mobile app

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