screen problem - text is flickering - Galaxy Tab 10.1 Q&A, Help & Troubleshooting

I have a problem with my gtab. the screen is kind of flockering. Not the problem with the screen flicker when the tab is low on ram, which was solved with the latest kernel. It is some kind of ... grainy effect. I notized first when I read a Pdf file where the background was black and the letters white. The letters were a little bit moving, as if the pixel were not constant. then I notized it is the same in the taskbar when on landscape, but not on portrait. the numbers of the time were grainy. furthermore the letters of the Apps in the Appdrawer, grainy but only in landscape, not portrait.
How can I solve this problem?
rom is Infamous AOKP latest kernel 1.9.1
should be p7510 - p4 wifi

lordofazeroth said:
I have a problem with my gtab. the screen is kind of flockering. Not the problem with the screen flicker when the tab is low on ram, which was solved with the latest kernel. It is some kind of ... grainy effect. I notized first when I read a Pdf file where the background was black and the letters white. The letters were a little bit moving, as if the pixel were not constant. then I notized it is the same in the taskbar when on landscape, but not on portrait. the numbers of the time were grainy. furthermore the letters of the Apps in the Appdrawer, grainy but only in landscape, not portrait.
How can I solve this problem?
rom is Infamous AOKP latest kernel 1.9.1
should be p7510 - p4 wifi
Click to expand...
Click to collapse
If with grainy you mean that you can see the pixels, that is normal as or device doesn't come with the highest resolution. If it is really moving, that would be odd and is not something I see. Did you check whether it is also present on stock ROM?
Verstuurd van mijn GT-I9000

I know the screen. I mean not the normal grainy letters coming from low ppi.
The pixels are definitly moving, not all pixel of a letter/number only some of them.
I didnt see something on stock, no.

Uploaded a video:
https://www.dropbox.com/s/7mbucitty7wx6yp/VID_20130902_091430.mp4
Another one, with PDF and clock:
https://www.dropbox.com/s/6oake0kgse3jyyq/VID_20130902_093920.mp4

The flicker is even there in CWM and on the SGT 10.1 Boot text

I'd like to push this, maybe someone could help me, although I got a new tablet a while ago.
Videos here:
https://www.dropbox.com/sh/cixq1secy5u5vxq/Xt9w5uVgqB

lordofazeroth said:
I'd like to push this, maybe someone could help me, although I got a new tablet a while ago.
Videos here:
https://www.dropbox.com/sh/cixq1secy5u5vxq/Xt9w5uVgqB
Click to expand...
Click to collapse
Perhaps, it is repairable, I already opened the GTab.
(Never had warranty)

lordofazeroth said:
Perhaps, it is repairable, I already opened the GTab.
(Never had warranty)
Click to expand...
Click to collapse
Hi,
I am facing the same problem. I watched your videos and its the same.
Did u get it checked. Please let me know if you solve this.
Thanks,
AV

Nothing as of yet.
Tablet can be switched on but lies somewhere around

Now I am on a KK Rom - Omni.
Not suprisingly, the flicker is still there...

push?
Any help?

It looks you have a faulty digitizer and/or screen. Since you tried almost every ROM you can safely rule out a software problem (you did test this with a stock ROM as well, right?). So I'm guessing it's hardware related.
Sent from my Nexus 7 2013

Itsa me again...
My tablet seems to be fine again :good:
What did I do?
Two things:
1)
I left the screen on with power plugged in. Nothing else
I do not know if this did the trick.
2)
I overclocked the tab to 1.4 GHz, activated WiFi Bluetooth, max. brightness and ran a stability test with graphics.
I then wrapped the tablet into a blanket (heat generation).
After 15 minutes I heard the battery (it was charged only to 15 % before)
And it was quite hot.
After cooling the tablet down i read a few PDF and no flicker...
Now I have two tablets, one Asus and one Samsung
Any comment on that procedure?

Unfortunately it is back again.
I burned the tablet again, but nothing. Didnt work this time.
Do you have any suggestions how to fix this?

Related

decreasing screen resolution

i have searched and read on screen problems and seen info on lines across screen. i think i have his as sometimes xda is unreadable and if it were a pc would have thought that the monitor card had gone or driver wrong resulting in decreased screen resolution ( hazy and non color )
fix seems to be a new screen or touch pad - bit confused what the difference is. which bit is what?? can any one who has had ( and hopefully fixed ) low resolution problem clarify which parts are needed.
Note - Problem seems intermittent ss better today after hard reset than before!!!???? as working ok now thibk the touch pad is working as it certainly takes input commands?
cna anyone clarify - running 4.00.05ENG and 4.21 radio
problem I have seems very intermitant. If the screen is OK it seems to go bad during recharing phase either syncd to PC or via car charger.
Also inbox is now unviewable for SMS or sync'd emails.
Has anyone seen this where charging impacts the screen??
Will a reload of 4.00.05 help?
No. If it's a hardware problem (and it does sound like that), no ROM upgrade will fix it. The touch pad is the part that measures where the pen is, the screen lies underneath. They are attached as one piece, but they can be separated (with care...).

Fast vertical lines on screen wake up

people, has anyone of you noticed white vertical lines that appear for a fraction of a second when you power on the device? it happens right before lock screen appears... best could be seen in a dark... seems like there is a problem with screen initialization on a driver level...
Could someone check this issue?
Using Lightning ROM 1.5
Sounds like your phone is defective.
cmd512 said:
Sounds like your phone is defective.
Click to expand...
Click to collapse
i prefer to be more optimistic due to the fact that many others reported the same problem on different forum... xda is more reliable, so I'm trying to collect the opinions here as well
Mine has this, noticed it for the first time yesterday (hadn't seen any reports of this at that time).
NZtechfreak said:
Mine has this, noticed it for the first time yesterday (hadn't seen any reports of this at that time).
Click to expand...
Click to collapse
don't worry, I think this effect is present on every piece of 9100. more or less obvious for users... it might be not vertical lines that people see but the quick white flash
Datosss said:
people, has anyone of you noticed white vertical lines that appear for a fraction of a second when you power on the device? it happens right before lock screen appears... best could be seen in a dark... seems like there is a problem with screen initialization on a driver level...
Could someone check this issue?
Using Lightning ROM 1.5
Click to expand...
Click to collapse
What effect does this have on any other aspect of the phone, or is it literally only that fraction of a second that there is any apparent effect?
johncmolyneux said:
What effect does this have on any other aspect of the phone, or is it literally only that fraction of a second that there is any apparent effect?
Click to expand...
Click to collapse
if it is really a problem of display controller low-level driver - it might cause some serious problems as time passes... total screen failure, for instance... as i remember from past cell phones - it was the first sign of upcoming screen death...
but i think that in our case - this is just a minor driver issue in screen initialization process... at least i believe so
I have this problem with the screen as well! and it's annoying to see those vertical lines whenever I wake up the screen.
sometime i can see the lines with "CRT Screen Off" mod, but without they dont appear
Try to do a backup in CW recovery and flash a stock rom.
It can be the CRT effect or any other custom rom issue.
It would be great to know if the problem is due to your custom rom or not.
Hey, sorry to bring this up again, but I'm having the same problem, and it's really bothering me. If there's any way of fixing it, please let me know, I just uploaded the stock ICS 4.0.3 for my device, and it started to show.
mine too has this
Mine also has this issue. only visible in the dark
yeah, same here. I thought i was the only one having this
Sent from my GT-I9100 using xda premium
Noticed this straight away when I got my new phone and it was there before I flashed a custom anything
***Bezeke HOLO LPQ base running bits stuff from everywhere ***
I also have this issue
One large, white vertical line. Clearly visible in all lighting conditions
However sometimes (rarely) it doesn't do it.
I have compared this to a black galaxy s2 (mines white) which doesn't suffer from this issue. It actually seems to delay the screen on / unlock time
The black loads the lockscreen at almost the exact same time as the white displays the lines.
I've been putting off returning it under warranty as I can't do without it..
Its like a jolt of power that hits the screen
***Bezeke HOLO LPQ base running bits stuff from everywhere ***
yeah, i recently got a phone off someone, and it's been bothering me since, there's no way of fixing it? i hope it hasn't caused anyone trouble, i recently switched to iPhone to this phone and i'm absolutely loving it besides the white flash
hi
i have three galaxy i9100
two of them are black
and the last one is white
and relax every i9100 has this
i have it on my 3 devices
some people may not see it cuz they didnt test it in the darkness
turn off all the lights on the room all of them
ull see it once u press the power button
ayhamx360 said:
hi
i have three galaxy i9100
two of them are black
and the last one is white
and relax every i9100 has this
i have it on my 3 devices
some people may not see it cuz they didnt test it in the darkness
turn off all the lights on the room all of them
ull see it once u press the power button
Click to expand...
Click to collapse
If you mean the minute, almost "patterned" grey lines then yes. Every Galaxy S2 has theses.
But bright white, clearly visible line/s which delay the screen-on process.. No, not every Galaxy S2 has it.
Especially if they don't always appear
i don't think its an issue with the phone i had it running an old version of omega rom the latest 5.1 does'nt have that problem.

Weird Flicker when turning on the screen?

Hi everyone!, I'm having this really odd issue with my S2. I've only had it about a week now and this could have been happening all along though I didn't notice it.
Basically If the screen is off and I hit the power button is has this really slight flicker as the screen comes on. It's almost like a single line down the screen right before the wallpaper appears. It's also right-justified on the screen and always in the same spot.
Has anyone else had this issue? It can be reproduced by simply hitting the power button to shut the screen off then hitting it again to turn it on.
Thanks!
Edit: Also the screen doesn't always fade on. 3/5 times it will just "instant-on" where I'll hit the power button and it will instantly show the lock screen tile instead of "fading" into it. Does this happen to anyone else or does it ALWAYS fade in?
I'm probably just being paranoid but I'd rather replace the phone quickly to avoid actually sending it to manufacturer.
Thanks again!
You should take a video of it so we can see if it is normal. I don't see what you describe, and not sure the phone is supposed to "fade in" to the lock screen. Mine is always instant on.
I once flashed to Litening ROM and it had that flicker (lightning style) as a feature I guess, is it the same problem OP stated?
Regards.
Saw it once two days ago, vertically on the extreme left of the screen. Haven't seen it since, but it was very rapid - blink-and-you'll-miss-it job. Can't say it worries me. On Revolution FWIW.
B3311 said:
Saw it once two days ago, vertically on the extreme left of the screen. Haven't seen it since, but it was very rapid - blink-and-you'll-miss-it job. Can't say it worries me. On Revolution FWIW.
Click to expand...
Click to collapse
sorry I can't take a video since this is the only device that I own that is capable of taking video.
anyway, yeah - it's really quick. And it's vertically down the screen. I kind of assumed that it was the backlight turning on but I'm pretty certain that happens on the sides right?
Right now it's 10:00 and this issue happens right where the "1" is on the clock at the top of the screen. So starting from that 1 all the way to the bottom.
Again it's REALLY fast - but it's noticeable, I'd have no problem showing it to someone in front of me. It just looks like a single line about the same width as the "1" as well. It almost seems like the one tiny line is showing before the rest of the screen, like if the screen were a "loading process" that line would be the first thing to appear before the rest gets backlit.
Not sure if it matters but it's the model I9100M from Virgin, just incase they are made differently somehow.
This phone has no backlight. The LED's are all individually lit.
Ryne said:
sorry I can't take a video since this is the only device that I own that is capable of taking video.
anyway, yeah - it's really quick. And it's vertically down the screen. I kind of assumed that it was the backlight turning on but I'm pretty certain that happens on the sides right?
Right now it's 10:00 and this issue happens right where the "1" is on the clock at the top of the screen. So starting from that 1 all the way to the bottom.
Again it's REALLY fast - but it's noticeable, I'd have no problem showing it to someone in front of me. It just looks like a single line about the same width as the "1" as well. It almost seems like the one tiny line is showing before the rest of the screen, like if the screen were a "loading process" that line would be the first thing to appear before the rest gets backlit.
Not sure if it matters but it's the model I9100M from Virgin, just incase they are made differently somehow.
Click to expand...
Click to collapse
Hmm, not the same problem as me - certainly nothing to do with the time here - it was in the afternoon when it happened with me, and my lockscreen clock's in 12 hour format. Clock's also at the bottom of my screen.
Been trying to reproduce it, and can't.
B3311 said:
Hmm, not the same problem as me - certainly nothing to do with the time here - it was in the afternoon when it happened with me, and my lockscreen clock's in 12 hour format. Clock's also at the bottom of my screen.
Been trying to reproduce it, and can't.
Click to expand...
Click to collapse
No no, I wasn't saying that the clock had anything to do with it, I was just trying to describe where the line appears on screen. I was also talking about the clock that appears at the very top, not the one on the lock screen. If I just continually tap the power button on and off I can see the "line" appear every time exactly in that spot.
It's pretty noticeable, unless you have the phone away from you - so if you don't see it then it probably isn't happening.
Does anyone think I should return this and get another? I don't really want to run into issues later and have to send to manufacturer. Is this problem big enough that I could get it replaced without issue?
Thank's for the replies!
Sorry, misunderstood. Definitely not my problem, I have no clock in the status bar.
If it happens every time, I'd probably return it if I was you - could be the precursor of something more serious.
Hi again, Thanks for the replies. I realized today that the issue is really only noticeable if you're in a dark room. Even in a semi-lit room it's almost unnoticeable which is probably why I hadnt seen it thus far.
If anyone wouldn't mind flicking the lights off and taking a look I'd appreciate it. If not I'll just return it.
thanks again forum!
I experience it too (at least I think we are talking about the same thing)..it's like it's stuttering and lagging after being in standby. So the first time it renders the lockscreen, the first few frames seem to be rendered at a different pace. If you turn the screen on after a good break, it'll likely do it, but after a few times in a row it instantly shows the screen.
Perhaps it relates to how big the wallpaper for the lockscreen is. I'm not sure, but I've had some huge 2mb pictures set as wallpapers for the lockscreen, and afterwards I think I decided to select a smaller image. I don't know if it was just a placebo effect, but anyways..it still does it with my current picture. I don't really care. You could try a different lockscreen from android market and see if it helps, but I think every SII suffers from this.
I have this exact issue too and it really annoys me! I also bought the phone from Virgin if that is relevant. It's a white streak on the left of the screen for me and only happens every so often. So what's the prognosis? A software fault? Hopefully fixed in a subsequent firmware update? Or a hardware fault worth repairing?

Static interferences on screen

Hi,
I've a strange and creepy problem on my prime, sometime the screen and speaker (tablet) show some static interferences, the screen messed up display horizontal bars white (in landscape ) and noisy cracking sound.
When it appends, I reboot the tablet, and the problem is gone.
I already tried a factory reset, but the problem is still here, occasonial but still here.
I am on last stock firmware. I've got the plan to root my prime, but it need to go RMA, I prefer to rid of this problem before.
Did someone encounter this bug before?
Thanks.
If it's only on the left side about an inch, then it is a known issue a lot of us have. I haven't had static in sound.
Well, no it's horizontal "static" bars wich appear randomly on all screen surface, next time i'll try to record it with my phone camera.
Something like that:
http://www.youtube.com/watch?v=nj1brJTVE0o
but far worst in my opinion. It's like flickering to me.
kalhohan said:
Something like that:
http://www.youtube.com/watch?v=nj1brJTVE0o
but far worst in my opinion. It's like flickering to me.
Click to expand...
Click to collapse
That's pretty similar to what I have, but usually it goes from the bottom all the way to the top of the screen, but only on the left side while in landscape position. It goes away if I move the screen from landscape to portrait, or reboot. Sometimes just locking and unlocking is enough to fix it. It was really bad when I was running motley's kernal 3.07 and interactive governor.
Now I don't have it as bad, I'm using Motley's lite kernal, with SIO, Ondemand, and sql patch. All I get now is a flickering lower bar and sometimes the left side corruption, but locking and unlocking screen usually fixes it.
If you'e getting this all over the screen, then that's something different and an RMA might fix it. If you're in the states, some best buys are replacing them with a 700, which is likely better.

need help

Hello there,
I have a problem that may look wired for some but it actually happend to my galaxy s2. I had a stock jeally bean, then I installed a jelly synap rom. I noticed that the display from the sides got smaller than before in the jeally bean. I came back to jeally bean but in vain. The display is not as big as it was. I tried every possible way; installing stock rom and stock recovery but they all failed. So PLEASE I need help.
Well that is weird. But you have now a smaller screen is the resolution also different or you cant see parts of the screen now?. I think your display has some problems then if you have it like that. Can you try this code in dialer on stock *#0*# can you post some pictures? Looks me like a hardware fault
Sent from my GT-I9100 using Tapatalk
wulsic said:
Well that is weird. But you have now a smaller screen is the resolution also different or you cant see parts of the screen now?. I think your display has some problems then if you have it like that. Can you try this code in dialer on stock *#0*# can you post some pictures? Looks me like a hardware fault
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
Thanks for your reply. I think the problem has to do with the software not hardware as the display was good before installing the new rom. Also, When I tried the rom on another phone, the same happened. The display gets smaller from the sides of the phone. Regarding the code, I tried it and every thing seems good. The problem is in the sides of the phone.I can't post a picture until I get 10 posts.
I attached the picture.Please take a look at it and see if it is normal or the screen is smaller (from the sides) than usual.
anahisto farmers
Someone help please!
mr.jabr said:
I attached the picture.Please take a look at it and see if it is normal or the screen is smaller (from the sides) than usual.
Click to expand...
Click to collapse
This seems normal to me...
Looks also normal to me but i cant see much difference if you have the stripes. Could you make on in a brighter light cause those screens from these days can be pretty black.
Download this white background in the attachment and open it. Then take something to measure the distance between the screen and the end of your phone left to right.
It should be something like4mm maybe a bit smaller so say 3-4. Could you measure that? If it is also 3-4 mm then it is good
Verstuurd vanaf mijn GT-I9100 met Tapatalk
thanks for your reply.I can't see your attachment but I could manage measure the display and find it 5.6 CM. I'm talking about the display width from left to right, the lighted area. Is this normal? if it is, then i'm going to have an eye test
wiaitng for your reply!

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