Database Develop

graphical artifacts on my tab

Hello guys,
I have some strange artifacts on my screen. First time I noticed this was on youtube. it shows some strange picture tearing on the left lower corner of the screen. First I thought it was some glitch in youtube app, but later i discovered similar glitch in some flash video. I noticed that it's most visible in Anomaly HD, where allmost entire lower left corner somehow flickers. no other games or apps seem to have this kind of problem, 720p HW accelerated video plays like a charm
Is this problem caused by apps, or is it faulty tegra 2? Can I try another display driver? Anyone else encountered this kind of glitch?
I uploaded video captured on my Galaxy W - it's most visible on Anomaly HD

Try a custom from. If it does not work, you might have a messed up GPU

I am currently using overcome 2.3.1, but i had this issue on stock as well...what's bugging me is the fact that no other app or game I've tried seems to be affected
for example shadowgun, zen pinbal thd, modern combat 3...all those games are working with no problem...might as well wait for official ICS update and see if it helps.

ok another funny thing: after installing latest AOKP ROM this happens when booting (same thing happens in CWM recovery after installing CWM suggested in thread)
http://www.youtube.com/watch?v=jQp39SvzNtg&feature=g-upl
here is the original video, seems i somehow messed up inserting the link
http://www.youtube.com/watch?v=kyKITveorwY&feature=g-upl
EDIT:
i'm starting to thing there's something really wrong with my tab...this iswhat i have after applying motley kernel (no screen shifting on previous kernel)
Could my problem be somehow kernel related?
video:
http://www.youtube.com/watch?v=60_e1U7Bg8E&feature=g-upl
EDIT2:
seems like i'm not the only one
http://forum.xda-developers.com/showthread.php?t=1513949

I have this problem too. I see it in the lower left corner of the screen when scrolling through the video wall in the youtube app. If I turn the tab upside-down in landscape mode the flashing/tearing happens in the lower right corner of the screen. However, the problem does not seem to happen in the portrait mode at all.
I'm on stock unrooted rom.

Can you try flashing cm rom with latest recovery? I'm unable to flash latest build with my current recovery. If I flash recovery recomended in the cm tgread my screen starts to scroll from the bottom to the top. If I try to flash the rom with this new recovery same thing happens when booting...same goes with motley kernel as documented in videos above. Anyone else is having this problem? I can live with some screen tearing but that scrolling pisses me off...it makes newer cwm recovery unusable for me.
Sent from my GT-I8150 using XDA

It's just as esqauw said...when i turn tablet upside down bug appears on different spot ( right lower corner screenwise, left upper corner tabletwise ). I believe tis has to He somehow related to software, because it appears elsewhere on the screen...might be completely wrong off course. Any oppinions?
Sent from my GT-P7300 using XDA

someone has to know what to do about that sliding screen issue

Same here
I was about to link you my thread on this but I see you found it already. I have not looked into this for a few months.
For me the problem is inconsistent so it is difficult to test. Id think if it were a hardware issue then most if not all apps would be affected. Maybe the way the affected apps are writing to the screen is triggering it. Id also think more people would be reporting the problem.
Different roms don't seem to help which could point to hardware or some low level (lower than rom?) software cause. I watched your videos of the boot screens post kernal changes and I have not had that type of problem yet. But I have not rooted or tried other roms either. This may support the low level software cause.
Your information adds support to a software cause with the artifacts appearing in different parts of the screen when rotated. I think a hardware cause would mean a consistent location on the screen.
I cant find the threads now but Ive seen mention that Samsung's implementation of the screen and Tegra 2 on the 8.9 causes a performance lag in landscape that does not appear in portrait. The 10.1 does not have this problem. Maybe this is related to that. The lack of the artifacts in portrait mode would lend support to this.
I hope you find a fix but Ive resolved myself to living with it. Although, I should probably look at warranty options before it expires.
Good luck

What do the graphics look like on this free graphics benchmark app?
https://play.google.com/store/apps/details?id=com.aurorasoftworks.quadrant.ui.standard&hl=en

I get 2281 in quadrant. lt runs smooth with no problems or glitching. but it runs in portrait mode which does not appear to have the bug.
Given that bug does not happen in portrait mode I'm leaning toward the problem being the performance lag issue I mentioned above.

Same here
Sent from my GT-P7300 using XDA

Ok, so I have to clarified couple of things about lag and stuff.
1. I was played GTA 3 v1.3 with all the in-game setups at max and with frame limiter disabled. It has lagged as hell! Then, I switched the game to "Zoom to fill screen" and the game runs very very very smooth but the screen resolution became low. This is applied also to Asphalt 6 and other HD games.
2. The tablet runs smoothly in Portrait Mode. The stock launcher from 3.2 runs perfectly in portrait for me.
3. I tried to overclock up to 1.5 GHz and tried again to play GTA 3 with the option "Stretch to fill screen" and it LAGS! Tried with "Zoom to fill screen", no lag at all but screen resolution problem. Otherwise, is playable
I think all it's related to software. Hardware is quiet good. Maybe if we change the DPI the lag will dissapear, don't know

Jellybean seems to fix it
Well I tried the AOSP 10 beta 8 build and CM10 latest build and they both appear to have fixed the problem. AOSP seems a bit better performance wise so ill be sticking with that for the foreseeable future. I guess it was software after all.

I have the exact same issue with newly bought tab 8.9 on youtube app. and I didn't use alot of other apps but the apps I tried never had issues with the screen. The tab is all stock.
so, what we have concluded here is that it is a software issue or some hardware issue that should be taken care of by the warranty?!

Well it seems that it's software issue,because after flashing CM10 preview, those artifacts dissappeared.
Sent from my GT-P7300 using xda app-developers app

That's great news. But that leads to another question
Do all gtabs 8.9 have the same issue using HC 3.2? So that we can say that we have a software issue only? Or is the issue related to some faulty SoCs that may show these artifacts using stock software?
I just want to make sure that it is a software issue only as I think I can make use of the warranty at the moment if it is a hardware issue
Thanks for sharing the tip
Sent from my GT-P7300 using xda app-developers app

Screen washed out after playing video

Anybody else noticed that the screen is washed out/blown out sometimes after a video plays (mainly Netflix, maybe)? It seems to be a combination of increased brightness and decreased color saturation, making colors seem... well... washed out. It goes away after either shutting the screen off and on or switching to another app. I think. I haven't found the pattern yet.
I'm guessing it's Nvidia's Tegra 3 PRISM tech at play, and it's just not shutting off after the video app is closed. I'll expect a software fix at some point, but just want to see if anyone else is experiencing it.

Well son of a b... that is what is causing my washed out colors and gamma. I noticed it seemed to come and go. Unfortunately it never seems to completely clear up for me, even after going to other apps.
I tested this with the Transformers movie. After playing that a few seconds, I left and noticed the home screen looked really saturated, then went to the browser, and it was the same.
For me going to another app doesn't seem to clear it up, but it does clear up partially after a period of time. And maybe it might be my imagination, but it doesn't seem like it really ever goes back to normal until I reboot the tablet.

next to my work ipad.. the colors seem really blown out. =\ also there seems to be a video stutter / jittery issue during the panning effect. Played it side by side with my S3 and the s3 can render it just fine. What gives?

Haven't noticed anything like that after watching videos or movie on nexus 7. display looks great 24/7

demandarin said:
Haven't noticed anything like that after watching videos or movie on nexus 7. display looks great 24/7
Click to expand...
Click to collapse
Have you tried the Trasnformers movie? Let it play for about a minute at least

Ravynmagi said:
Have you tried the Trasnformers movie? Let it play for about a minute at least
Click to expand...
Click to collapse
Ok. will do once I get off. this only happens with that movie alone?

demandarin said:
Ok. will do once I get off. this only happens with that movie alone?
Click to expand...
Click to collapse
No, I see it happen with YouTube and Netflix too. I was just trying to make a futile attempt to understand why this happens to some of us and not others. My guess though if you haven't seen it with other videos, the Transformer movie won't do it either.

I've noticed that it's most obvious on some screen elements, but not all. So, it's entirely possible, I think, for someone to be experiencing the effect and simply not noticing it.

I've noticed this as well quite annoying.
Sent from my Nexus 7 using xda premium

The after movie wash-out appearance was particularly noticeable when looking at small fonts on a white background. Such as this forum.

Yeah same for me! I'm on my 3rd nexus because of dust under the screen, I can't remember my previous 2 doing it. Will it be fixed by an up date doyou think? Or could it be hardware related?

Ravynmagi said:
Have you tried the Trasnformers movie? Let it play for about a minute at least
Click to expand...
Click to collapse
I finished watching the transformers movie this morning. Looked great to me. I can't notice any washed out colours.

I just started getting the "whiteout" too. Not from anything in particular that I can tell, it happened twice coming out of sleep mode.
Anybody have a fix? Is it Hardware or Software related?

>Is it Hardware or Software related?
Take screen cap. If cap image is likewise washed out, it's not hardware. If cap image isn't washed out, then it's more complicated.

Ravynmagi said:
Have you tried the Trasnformers movie? Let it play for about a minute at least
Click to expand...
Click to collapse
Ravynmagi said:
No, I see it happen with YouTube and Netflix too. I was just trying to make a futile attempt to understand why this happens to some of us and not others. My guess though if you haven't seen it with other videos, the Transformer movie won't do it either.
Click to expand...
Click to collapse
I tried it on all the same things you listed. Didn't notice nothing some of you described at all. Screen still looked sharp n crisp. Colors looked fine and not washed out.
Its more than likely the nvidia feature kicking in. Especially if you have brightness set up higher. Probably doing it to save battery life. I keep my brightness at 12% and its more than bright enough for me to see everything well. I heard the autobrightness likes to act up so THST could be am issue also if you have that on also. I never use autobrightness unless I take device outdoors.

e.mote said:
>Is it Hardware or Software related?
Take screen cap. If cap image is likewise washed out, it's not hardware. If cap image isn't washed out, then it's more complicated.
Click to expand...
Click to collapse
Can you give me the quick answer on how to take a screen capture on the N7? Thanks!

Just took several screenshots and swiped between the screen that was normal screenshot and the faded screenshot and they both look the same for me, which is lovely with nice rich colours. If I stick transformers on for 20 sec its washed out when I exit, as soon as I turn the screen on and off its back to normal. I just think its a bug in the screen settings when exiting a move or game. Used to happen on my PC until I updated the driver.
---------- Post added at 05:09 PM ---------- Previous post was at 05:03 PM ----------
theasp18 said:
Can you give me the quick answer on how to take a screen capture on the N7? Thanks!
Click to expand...
Click to collapse
You just hold the volume down button and the bower button, it will take a snapshotof the screen. I've tested it though, see my above post

I'm having the same issue too.
Happens when I watch a video on youtube, netflix or play movies. I use a brightness app to change the brightness levels and it returns to normal. I'm also getting the "screen flickering" issue described here http://forum.xda-developers.com/showthread.php?t=1740385
I really hope these issue with be fixed with an update. I'm new to android. Where's the best place to report these issues direct to Google/Asus?

>between the screen that was normal screenshot and the faded screenshot and they both look the same for me, which is lovely with nice rich colours
So it's probably hardware (display), or a combo of hardware/firmware.
Power-saving feature of Kai's PRISM display pertains to color saturation and brightness. As OP indicated, malfunction may be related to that. But it doesn't matter what the exact cause is.
It may or may not be fixable via firmware update. Suggest getting RMA process started, then sit on it for a few days to see if OTA fix happens. Don't wait beyond the return period. Make sure to ask for advance replacement if RMA.
>I just think its a bug in the screen settings when exiting a move or game.
If the issue was firmware-only, then it would happen to all units, not some. It's either HW, or HW+FW.
Edit: Suggest trying different movie players and different movies to find extent of problem.

hedosa 252.]
rhirons said:
I'm having the same issue too.
Happens when I watch a video on youtube, netflix or play movies. I use a brightness app to change the brightness levels and it returns to normal. I'm also getting the "screen flickering" issue described here http://forum.xda-developers.com/showthread.php?t=1740385
I really hope these issue with be fixed with an update. I'm new to android. Where's the best place to report these issues direct to Google/Asus?
Click to expand...
Click to collapse
So question for the community. If you're having issues with the "whiteout/washout", the ghosting and flickering... would you recommend getting a replacement or waiting for a driver / firmware update?

[Q] Video Playback Issue

Hey guys, need a bit of help...
Been using the Z a few days now, and I'm having 2 issues...
WiFi and Bluetooth won't work together at the same time, one knocks the other off whenever I'm browsing and listening to music on my Bluetooth stereo... In the ratio of about 5:1 for WiFi:Bluetooth like...
That's one issue that's a little annoying.
Another is that video playback over WiFi is broken... If I load up a video on the YouTube app, depending on video length, the video normally freezes around the 40 second mark. If I load a video up in my browser, more of the video will load, but never the full video, could freeze 3 minutes in, 5 seconds in, but never fails to freeze.
I've reverted to stock YouTube app, cleared cache, didn't solve a sausage.
I haven't gotten to the end of a single video since I bought the device.
EDIT: Above issue is most likelyan android wide YouTube issue, if the comments on Play are anything to go by.
And that's on top of the Bluetooth/WiFi clashing that I mentioned above.
Not what I expect from a quad core device with 2GB ram like! Any ideas? Faulty handset? Factory reset? Return the handset? I've never rooted or used custom firmware ;so don't really know how to go about it, open to any suggestions to get the best out of the hardware...
Thanks in advance guys.

WiFi/Bluetooth issue
Seems the YouTube issue is an android wide issue, sorry for bringing it up.
Just leaves the Bluetooth/WiFi clashing issue where they keep knocking each other off while they're both being used.

Nook HD+ screen keeps flashing during video playback (without charging)

Please help saving my Nook HD+
The screen keeps flashing (especially during video playback.) Unlike most of the others, it is not really turning on and off randomly, instead it just goes dim and bright and then turns to the original brightness repeatingly.
I can spot a pattern for these flashings: usually when the screen is trying to display a dim or darker page, it tends to flash a lot. For example, when I am using it to watch True Blood, the screen would flash badly for those darker scenes, but when I watch the Big Bang theory, the flashing would only happen once or twice. Similarly, when I use android rom like Carbon or CM, the screen usually flashes when I go to the menu/setting (but it only flashes when there is a change of page or when a box prompts); however for stock rom when most of the time the screen is displaying white pages, this problem would get much less frequent. But still when i use the stock to play video, the issue is still there
I have tried to eliminate the possible causes for this:
- Not a ROM issue: videos flicker no matter what rom I am using. In fact when I go into the CWM recovery, the screen does flash for every page change as well
- Not a video issue: I have tried different formats of video, mkv, avi, the issue still persists
- Not a charging issue: it happens with or without charging. I tried to charge it on wall and my laptop as well
- Not clashing app issue: it happens before I try to install any new app.
- Not a player isuue: i tried on MX player, mobo player, dice player, with both HW and SW decoding, all have the same issue
What else can I try? Can anyone give me a diagnosis of whether this is a software or hardware issue? Exchange for a new one would be hard for me since I am an international buyer, the shipping cost is simply too much
It's my first time shopping in the US and I surely hope this would be a satisfying experience. If the issue isnt resovled I am afriad I would have to abandon the device since watching video is my main purpose of buying it. However it would be really sad for me...
Sorry for my poor english and if you dont understand any parts of my issue, please feel free to clarify with me

[HELP]Screen gliching after display replacement

Recently I have changed the display of my XZ due to some touchscreen problem.after changing it everything was good when using for normal works like calling or browsing.
then I started to play games like Clash of clans or anything,the screen keeps gliching where the colours were more detailed.
then the problem started to be seen while seeing photos or videos.then when browsing anything detailed or colourful.The problem is increasing.
what is causing the problem?is there any problem in the connection of digitizer?because when I tried to take screenshot of glich,it was fine.
what can I do now?
I don't know if XDA is the place to search for such stupid problems,but I NEED HELP BADLY!

Jongla said:
Recently I have changed the display of my XZ due to some touchscreen problem.after changing it everything was good when using for normal works like calling or browsing.
then I started to play games like Clash of clans or anything,the screen keeps gliching where the colours were more detailed.
then the problem started to be seen while seeing photos or videos.then when browsing anything detailed or colourful.The problem is increasing.
what is causing the problem?is there any problem in the connection of digitizer?because when I tried to take screenshot of glich,it was fine.
what can I do now?
I don't know if XDA is the place to search for such stupid problems,but I NEED HELP BADLY!
Click to expand...
Click to collapse
Well, i think your screen is faulty. It has either been not of top notch quality like SOny and thus when there are more colours than it can produce, it flickers. It could also be due to an old screen on which water/any other liquid had been spilled. I think, wherever you got it replaced, you should go there and get it replaced again.
Good Luck.
Xda is a place to search for all your problems