[Q] Strange banding in 4.2? - Nexus 7 Q&A, Help & Troubleshooting

I recently installed cm10.1, and noticed banding on the settings menu, and a weird patchiness in certain menus.
I'm not very good at being descriptive, and pictures speak a thousand words, so please see attatched.
http://i.imgur.com/ojrEG.png
http://i.imgur.com/Axdah.png
I assumed this was a cm10.1 bug, what with it not being finished, but turns out stock 4.2 does this.
Are there any remedies to this?

Bump

It is common, not sure if it is a cm10.1 issue, or a nexus 7 issue, or a 4.2.1 error
Sent from my Nexus 7 using xda app-developers app

Doesn't seem like too big of a deal, but you could try installing a theme and see of that fixes it if you're bothered and on cm10.

Turns out its by design implemented by google, its simply a terrible image created by them. This guy has a fix though http://forum.xda-developers.com/showthread.php?t=2052598
xda n7

Its by design?! They really dropped the ball on 4.2.
Thank you for the link to the thread.

I noticed this as well and at first, it had me worried my screen had internal injuries or something.
Then I turned it to landscape and the issue rotated with it, so I was like "Oh, that's strange."
It has to be a 4.2/CM10.1 issue, as my phone (though less apparent) has it too.

Related

Nexus 7 Backlight Flicker?

Does anyone else have this problem with their nexus 7? I just got my nexus 7 today but I noticed that the backlight seems to flicker randomly
It doesn't look like much in the video but it is very noticeable and gets annoying when you're reading an ebook like i was.. Here's a video showing the problem.(It's near the end)
VIDEO LINK: h**p://db.tt/28eD0NLk (It happens around 9 second in) (change ** into tt)
For whatever reason this forum would not post a video link to show the problem.. for those who wants to know what it looks like please PM me..
But basically the screen flickers randomly ..
Is this a software problem? Should I go back and get it exchanged?
I don't see a video
Sent from my Nexus 7 using xda app-developers app
phantasybm said:
I don't see a video
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Yeah because the forum does not allow new users to post link..which i think is really stupid
Already have a topic on this: http://forum.xda-developers.com/showthread.php?t=1740385
HiddenSanctum said:
Already have a topic on this: http://forum.xda-developers.com/showthread.php?t=1740385
Click to expand...
Click to collapse
I think its different.
Mine flickers no matter which app I use..even on home screen it flickers..
Also this forum has the most ridiculousspam prevention method..5 mins between posts + no link ? WTF
Its because you are new, we get a lot of trolls
Does increasing your brightness help?
Sent from my Nexus 7 using Tapatalk 2
I've had a similar problem as well. It seemed to happen to me on auto-brightness when it was changing the brightness level. I can't say for sure though, just my observation.
Sent from my Nexus 7 using xda premium
HiddenSanctum said:
Its because you are new, we get a lot of trolls
Does increasing your brightness help?
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
I havn't tried it yet..do we know if it's a hardware problem or software?
I just got it today so I can still return it if it turns out to be hardware
We really dunno at this point, but we are speculating software since both HTC One X and TF300 had similar problems and were fixed with firmware updates. Also someone switched it three times and all of them had this issue. Also try to run the screen in a pitch black room and tell me if the screen flicker is there. I may have a theory but need some other people to see if their units are behaving the same way as mine.
You can still post the link when you alter it a bit, insert a few *** into it, for example.
I turned mine on as soon as I got hold of it, no flicker, managed to go through and set up things, powered off and left to charged.
Coming back to it the screen would appear to turn on and off randomly, I thought it could be an app controlling a proximity sensor (I have one on my phone and I was EXTREMELY tired!), when I took it into the light there was no change.
I found that shaking it would help it flicker on and off at all intervals but didn't fix it. In the end I just started pushing random areas on the back, just before the issue went away I pressed around the bottom left quarter of mine and haven't had an issue since!
Glad I wasn't the only one with the problem though and would love to actually find out what it was.
Hope this helps!
Sent from my HTC One X using xda premium
kanzlerin said:
You can still post the link when you alter it a bit, insert a few *** into it, for example.
Click to expand...
Click to collapse
Try this video,
h**p://dl.dropbox.com/u/13153603/Videos/VID_20120715_100253.mp4
it is using google map and you can see the constant flickering.. It doesn't look very severe in the video but it is actually very noticeable and annoying
I have the same issue with mine. It only seems noticeable when I have the brightness set to the lowest setting and on a page that is predominately white. I don't think it's the proximity sensor though, because it happens both when I set it manually to the lowest setting and when I'm in the dark and the tablet sets the brightness all the way down itself. Hope the next update fixed this, because it's really annoying!
Sent from my Nexus 7 using XDA Premium HD app
Here's the link: http://dl.dropbox.com/u/13153603/Videos/VID_20120714_215601.mp4
Hope it works.
Seems like only a small portion of nexus 7 owners are reporting this issue .. I think I'm going to return mine ...
HiddenSanctum said:
We really dunno at this point, but we are speculating software since both HTC One X and TF300 had similar problems and were fixed with firmware updates. Also someone switched it three times and all of them had this issue. Also try to run the screen in a pitch black room and tell me if the screen flicker is there. I may have a theory but need some other people to see if their units are behaving the same way as mine.
Click to expand...
Click to collapse
I first noticed this flicker in a darkened room, so yes, it is definitely something going on. I'll try disabling auto-brightness to see if that matters.
If anyone else has info about this, please share!
PS this thread seems to describe the same issues: http://forum.xda-developers.com/showthread.php?t=1740385
Screen Flicker
HiddenSanctum said:
We really dunno at this point, but we are speculating software since both HTC One X and TF300 had similar problems and were fixed with firmware updates. Also someone switched it three times and all of them had this issue. Also try to run the screen in a pitch black room and tell me if the screen flicker is there. I may have a theory but need some other people to see if their units are behaving the same way as mine.
Click to expand...
Click to collapse
I can attest that the flicker is ever present in a pitch black room as well.
Like this?
There are a few videos on youtube, but i cant post links but if you do a search you can find it
I noticed a flickering in chrome yesterday. But only in chrome and only while the page is rendering after it fully renders no more flickering.
Everyone turn off wifi and I guarantee it will go away. It happens when using wifi which makes it hard to believe that a software update can fix it.

Screen not as responsive after 4.1.2

Hi all,
Anyone else noticed the screen isn't as responsive since the 4.1.2 update?
I scroll on the home screen and it goes in the opposite direction.
Sent from my Nexus 7 using XDA Premium HD app
garpunkal said:
Hi all,
Anyone else noticed the screen isn't as responsive since the 4.1.2 update?
I scroll on the home screen and it goes in the opposite direction.
Sent from my Nexus 7 using XDA Premium HD app
Click to expand...
Click to collapse
Yep !!! Deffo !
Also have you noticed, flicking doesn't change the page any more, you have to properly swipe.
Finally have you noticed you can't flick downwards for the Notifications you have to slide it all the way down?
Yep. Agree with this. Why did they change this. Sol annoying
Sent from my Nexus 7 using XDA Premium HD app
garpunkal said:
Yep. Agree with this. Why did they change this. Sol annoying
Sent from my Nexus 7 using XDA Premium HD app
Click to expand...
Click to collapse
Atleast its not just me
I haven't noticed this. I was having continual touch screen issues that seemed to get progressively worse as time went on. Days before I received my 4.1.2 update, majority of the time my tablet was unusable it seemed, requiring a reboot to work again. Then I finally got a notification that 4.1.2 was available. Since installing it, I've had *zero* touchscreen issues...
You can check me off next to "I fricken love it", however I have nothing to offer in regard to the other issues that you folks speak of. Maybe they were existent prior and I never noticed, who knows.
Damn, this is true. All. I thought it was TSF shell that I use, but it is not. I almost immediately upgraded to 4.1.2 so I was not that accustomed to 4.1.1, but now that you say, yes. You have to slide all the way, both screens and what bothers me more, notifications. Ugh.
I'm still not sure I'm following this. With both Apex and the stock launcher, I'm not noticing any significant change. If I'm in the app drawer and I want to swipe left or right, I can flick the screen and move my finger all but a half inch and the gesture applies accordingly and I see the screen move. Notifications feel no different as well. Am I missing something?
Same here homepage screens bounce back if I don't follow through with the swipe
Sent from my EVO using Tapatalk 2
Hey guys, I can flick home screens just fine if I do from the center of the screen. Imagine a vertical line from the camera to the charging port. Flicking from near the edges makes the screens scroll in the opposite direction every now and then.
Sent from my Nexus 7 using xda premium
Having this exact problem to. For me I would hesitate to suggest that this is more prominent when the tablet just been woken up. Really wish it hadn't changed.
I'm having similar problems on my stock, rooted 4.1.2 N7. It's become harder to flick-swipe between screens and the like. I don't have a screen protector on my device either.
Was first raised in http://forum.xda-developers.com/showthread.php?t=1943613 guess more people are noticing it now. Hope it'll be fixed in 4.2
has anybody tried the 4.2 update to see if it has fixed this?
After updating to 4.2.1 i started noticing this issue in both AOSP browser, chrome, app drawer and notification pulldowns... Annoyed my ass off... anyway, after some hard googling, it appears to be a 4.2.X issue? So after flashing CM10 (4.1.2) the problem is gone, but the 4.2 sweetness is as well...
Please star the issue here: http://code.google.com/p/android/issues/detail?id=39892
Update:
After flashing 4.2.1 again, everything seems to be working just fine... I'm just left clueless
I used to have the same problem. Can anyone here who has this problem right now tell me if they have enabled "Magnification Gestures" under accessibility in the settings menu? If so, disable it and see if the problem is better.

4.2 Grey Background Artifacts

Ever since updating to 4.2, I have these grey artifacts on grey backgrounds when dialog boxes appear... such as the one attached in my pic......
Not sure why more people are not bringing this issue up, but anyone heard of anything like this, or can confirm to experience this?
Anyone?
http://forum.xda-developers.com/showthread.php?p=34335085
I'm pretty sure one of the Google graphics artists screwed up on it.
Sent from my Nexus 7
Can't even tell what were looking at?
Where is the issue? Am I being blind?!
I have the same issue.. panicked for a moment but then realized its only in the boxes -.-
Sent from my MB865 using Tapatalk 2
@ OP
Yes, this is the MOST annoying issue with the 4.2 update
How do you screw THAT up? Seriously, I can see minor artifacts in all gradients now, and the Grays are absolutely horrendous. Pisses me off to no end
Can you guys please reply to my issue I've posted and spread the word as much as you can? We're no devs, but the best we can do is to raise awareness, because this is an issue that is unacceptable in final build stable software across multiple devices.
http://code.google.com/p/android/issues/detail?id=39969

Reboot while in camera

When taking pictures in low light situations with flash (it seems low battery enhances the probability) sometimes the pictures get artifacts (white lines close to the top/bottom of the picture).
And sometimes the phone gets stuck and reboots. The camera tends to make clicking noises right before it reboots that are louder than when usually focusing.
Look at the screenshot and at the end you can see the reboot. You can see a sudden battery level drop after the reboot.
I don't know if this is hardware or software related but a user suggested this to be a problem with the stock camera app.
I had this problem on two devices already and it seems to be on all devices, maybe just rarer for some people? Not sure.
If you have this problem vote for the following issue and hope google fixes it:
http://code.google.com/p/android/issues/detail?id=49702&#makechanges
I had something similar happen to me once last week. I was viewing my photos in the stratosphere mode and would hit the back button. I had to repeatedly do this to scroll to the next images after viewing them. When hitting the back button it would take me back to take a picture, but one time, it took me to a blank screen with the camera buttons still working. I ended up needing to restart my phone. Not sure what happened there.
I have only seen this once. It didn't occur again, so I haven't chased it down
Ditto only happened once in the first week of using and has never happened again
Sent from my Nexus 4 using Tapatalk 2
AW: Reboot while in camera
Kinda sucks when it happens randomly, today it happened twice to me and that in 4.2.2!
Sent from my Nexus 4 using xda app-developers app
I also have it, but less frequent, about one or two times per month. It happened on 4.2.1 and no one could solve it in my thread about this .
Facing the same issue more frequently
ruzkay said:
While taking pictures my phone suddenly got stuck and rebooted. This is the second time now. My camera makes strange click noises sonetimes wheb focusing but that seems to be normal.
The device was a little hot but not as hot as when in gaming and in gaming it never reboots.
Look at the screen shot and at the end you can see the reboot. What I'm worried about is the sudden battery level drop after the reboot.
Are these reboots hardware or software related? Should I get a replacement?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
I seem to have the same issue. So far, it has only occurred when I am trying to take a photo with the flash on. One more observation: seems to happen more often if the battery is low. However, both of us might be having defective devices, as it doesn't seem to be a common issue looking the forums here.
No solution found so far. Tried a factory reset. Tried using another camera app. Nothing helped. Might try flashing a custom ROM.
AW: Reboot while in camera
sumit29 said:
I seem to have the same issue. So far, it has only occurred when I am trying to take a photo with the flash on. One more observation: seems to happen more often if the battery is low. However, both of us might be having defective devices, as it doesn't seem to be a common issue looking the forums here.
No solution found so far. Tried a factory reset. Tried using another camera app. Nothing helped. Might try flashing a custom ROM.
Click to expand...
Click to collapse
All oft the things you described apply to my situation too. Also I noticed that pictures tend to have artifacts (white stripes close to the top/bottom). They always have the same distance from top/bottom but their length differs.
Also after the forced reboot there sometimes appears an extra picture in the gallery that is fully grey.
Sent from my Nexus 4 using xda app-developers app
I don't seem to have the artifact problem that you described. Also there is a creaking sound sometimes just before it restarts.
Have you tried flashing a custom ROM? Did it help? Otherwise RMA is possibly the way to go.
I ordered the phone from US using a mail forwarding service, so an rma will cost me another $100 or so. If you or anyone else can confirm that it is definitely a hardware issue which can be resolved by getting a replacement, i might go for it.
Sent from my Nexus 4 using xda app-developers app
sumit29 said:
I don't seem to have the artifact problem that you described. Also there is a creaking sound sometimes just before it restarts.
Have you tried flashing a custom ROM? Did it help? Otherwise RMA is possibly the way to go.
I ordered the phone from US using a mail forwarding service, so an rma will cost me another $100 or so. If you or anyone else can confirm that it is definitely a hardware issue which can be resolved by getting a replacement, i might go for it.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
I was on AOKP PUB Krait 05/02 by Stevespear and Harsh Kernel and I did have a reboot there once too. Also this is already my third Nexus 4 since I had to replace it 2 times due to issues (bottom side creaking 1st device / yellow blotches 2nd device) and this one really looks good only this camera reboot issue is left.
But my first phone did have the issue too, I didn't have the 2nd phone long enough so didn't see it happen there. I have no idea if it is a hardware or software issue but my bet is that all Nexus 4's have that issue.
It just seems that it appears rather rarely and most people don't notice it. Or it could be that the voltage is too low and that would explain why it happens on some phones more than on others since not all chips are equal. I was wondering if somehow setting the flash to be weaker so it draws less power would solve this. But I am just a user and don't really have an idea.
PS: I won't get my phone replaced since I can live with this issue (it happens rather rarely) and I went through 2 replacements to get this device which is close to perfect but I wouldn't mind if someone came up with a solution.
That makes me feel really lucky to have gotten a nearly perfect device. Anyway, guess we just have to live with it then. Lowering the flash intensity sounds like a good idea. Will check if some rom/kernel/app can do it for me.
Sent from my Nexus 4 using xda app-developers app
Just added issue 49702 on code.google.com. whoever is facing this problem, add your comments.
Sent from my Nexus 4 using xda app-developers app
Having the same problem here on 4.2.1 and 4.2.2. I think it might be the buggy stock camera/gallery app because I can't replicate the problem on the Camera Zoom FX app.
Edit: I remember having this problem on 4.2.1 and then clearing the gallery app data and not ever seeing the issue happen again. I will try the same on 4.2.2 and see if it fixes it too.
I added a link to the issue on OP guess that is all I can do.
sierratango88 said:
Having the same problem here on 4.2.1 and 4.2.2. I think it might be the buggy stock camera/gallery app because I can't replicate the problem on the Camera Zoom FX app.
Edit: I remember having this problem on 4.2.1 and then clearing the gallery app data and not ever seeing the issue happen again. I will try the same on 4.2.2 and see if it fixes it too.
Click to expand...
Click to collapse
I have had this issue with the Camera FX Zoom app also. So, at least in my case, I guess it's a hardware/camera driver issue. Anyway, I also cleared the gallery app data a few days back and haven't faced this issue since then, but haven't taken enough pics with flash to confirm that the issue is truly gone.
sumit29 said:
I have had this issue with the Camera FX Zoom app also. So, at least in my case, I guess it's a hardware/camera driver issue. Anyway, I also cleared the gallery app data a few days back and haven't faced this issue since then, but haven't taken enough pics with flash to confirm that the issue is truly gone.
Click to expand...
Click to collapse
Has the issue disappeared after clearing the app data for you? I certainly have not faced any reboots since doing it.

Does anyone else have a misaligned touch screen?

Is anyone else having a slight misalignment on the touch screen?
For me touch is shifted about a millimeter or two to the right.
I've checked on both my N4 and my sister's N4 and both of us seem to be having this slight misalignment.
Both of us have REV 11 N4's. One was obtained through T-Mobile in January, the other was obtained through Google Play just last month.
I've checked on a few roms. I've tried CM, PA, and Stock with a multitude of different kernels (Franco, Faux, Trinity, CM, and stock).
To check:
1. Enable "Show touches" under the Developer menu.
2. Touch a part of the screen where you'll be able to see the touch bubble and hold it there.
3. Look at the screen at angle to see under your finger.
It's not a big deal, just something I've noticed when I had difficulty trying to use PIE on the left side of the screen. Although, I still would love to be able to get the screen recalibrated to have more accurate touch sensitivity to eliminate the difficulty that I have with CM's PIE.
Another question: Is anyone aware of any LG diagnostic tool to calibrate the screen? I remember back on the HTC sensation there was a file that you could load through HBOOT and get your screen calibrated from there.
Photo attached.
Oh wow I never noticed this , I have the same thing, never really had problems with it
Btw I have an older model , so its not just a Rev11 thing
Sent from my Nexus 4
Mine looks like its right on when I test. Maybe just a hair over to the right but nowhere near as far off as yours. Rev11 302K
-Sent from that.... you know.... thing that sends these things-
I'm pretty sure you have OCD. So, take some medicine. Your phone is fine, stop crying. :crying::crying::crying::crying::crying::crying::crying::crying::crying::crying::good:
Nope...
I thought I was just trippin when I noticed the same thing last week
Just tested and confirmed, pretty significant misalignment by about 1 cm, which is a LOT when you're talking about a <5" touch screen..
My next thought is, is this a software issue?
We need more people to test and confirm. But I believe that is what we will find. Software issue.
Anyone with a Nexus 7 on stock 4.2.2, please also test and report.
Wow never thought anyone else was experiencing this, mine seems to be off since I always have to touch a little higher than what I'm going for even nav bar.
Sent from my Nexus 4 using xda premium
Notified the same thing while playing Draw Something, I thought I was mad
Tapalked with my iNexus 4S
Nobody tested a Nexus 7 yet?
I'll test my wife's when I get home and post the results
Could not reproduce the issue on the Nexus 7. Looks like it's specific to the Nexus 4
Sent from my Nexus 4 using xda premium
ingenious247 said:
I thought I was just trippin when I noticed the same thing last week
Just tested and confirmed, pretty significant misalignment by about 1 cm, which is a LOT when you're talking about a <5" touch screen..
My next thought is, is this a software issue?
We need more people to test and confirm. But I believe that is what we will find. Software issue.
Anyone with a Nexus 7 on stock 4.2.2, please also test and report.
Click to expand...
Click to collapse
I would think that it's a software issue. My HTC sensation was able to have it's screen recalibrated. I think LG would have some kind of tool to be able to do it.
Same exact issue here but I wouldn't even notice if I didn't try
Sent from my Nexus 4 using xda app-developers app
For me its OK all stock
Mines fine, right where it should be.
This is with me too and cannot use the letter "cue" because of it
Sent from my Nexus 4 using Tapatalk 2

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