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Screen burn in + washed out

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By jjjsong, Member on 15th July 2012, 01:41 AM
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25th August 2012, 08:50 PM |#101  
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Quote:
Originally Posted by r4d14n7

Every device has defective screens it seems like. Honestly, it might just be cheaper for them to piss off the 2% of users who actually read stuff here than change the manufacturing process. It sucks. It really does. It forces us who are actually bothered by it to exchange til we get a good one. Which can take a few tries sometimes. It's a bummer but that's what our profit-driven society has come to.

Waa. Calm down I would say 30% of devices or defective! That means around 1 person out of 3.

Sent from my Nexus 7 using Tapatalk 2
 
 
25th August 2012, 10:40 PM |#102  
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Originally Posted by jamesst20

Waa. Calm down I would say 30% of devices or defective! That means around 1 person out of 3.

Sent from my Nexus 7 using Tapatalk 2

Put the crack pipe down. 30% LOL
Quit smoking that stuff.


Sent from my Nexus 7
26th August 2012, 01:37 AM |#103  
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There is definitely a large amount of devices out there with issues. We are just the crowd of people who are able to identify these issues. Most people won't notice the things that drive us nuts.

I know there is always the guy that says oh well we here are just a small drop of owners with issues. Well last time I checked anytime polls are done in the news or by companies they select a few hundred people and poll them. Well here are the few hundred people.

There is no doubt an issue with this device quality control. I just hope that they are able to address it with a new batch.

Sent from my Galaxy Nexus using Tapatalk 2
4th September 2012, 02:55 AM |#104  
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Just noticed the ghosting on my screen'''bought from the play store.
5th September 2012, 08:55 PM |#105  
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My nexus C7 was absolutely fine since purchasing it from Tesco in store last Friday. No screen lift, flickering, burn-out... anything.

Today, after turning it on from sleep/screen-lock it was completely washed out as illustrated in the images above.

After using it for around 30 minutes to an hour the problem seemed to go away completely. The problem does seem to be dependant on the amount of time it is put to sleep. If i leave it for a minute or two then I get noticeable image retention. If I leave it for a few seconds I get no problem at all. If I leave it for 20 minutes or more I get full-on wash out and image retention. It's like the sun threw up on it.

My question is: Since it was absolutely fine for around 5 days or so, is this a hardware or a software issue? I haven't done anything unusual with the tablet over the last 24 hours. It hasn't been moved around any more than usual or dropped or whatnot.

Also: Should I RMA it? I can ring up Tesco tomorrow and probably arrange a replacement - but i'm worried the replacement will have screen lift! I'm also worried this problem will return again in another 5 or 10 days on an all new device. It really is strange.

John
6th September 2012, 11:54 AM |#106  
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Originally Posted by aristoc

My nexus C7 was absolutely fine since purchasing it from Tesco in store last Friday. No screen lift, flickering, burn-out... anything.

Today, after turning it on from sleep/screen-lock it was completely washed out as illustrated in the images above.

After using it for around 30 minutes to an hour the problem seemed to go away completely. The problem does seem to be dependant on the amount of time it is put to sleep. If i leave it for a minute or two then I get noticeable image retention. If I leave it for a few seconds I get no problem at all. If I leave it for 20 minutes or more I get full-on wash out and image retention. It's like the sun threw up on it.

My question is: Since it was absolutely fine for around 5 days or so, is this a hardware or a software issue? I haven't done anything unusual with the tablet over the last 24 hours. It hasn't been moved around any more than usual or dropped or whatnot.

Also: Should I RMA it? I can ring up Tesco tomorrow and probably arrange a replacement - but i'm worried the replacement will have screen lift! I'm also worried this problem will return again in another 5 or 10 days on an all new device. It really is strange.

John


Exactly the same thing for me. I got mine sometime mid-July, had been okay until about 1 week ago then it started to have these washed out and ghosting display issues. Simliarly it seems to depend on how long it put into sleep, for a short while then wake up its not too bad, but say for an hour or overnight, the screen is completely washed out.

I am hoping its s/w issue so it would be easier for me to fix as I am not staying US, it would be hard to send back for a replacement.
6th September 2012, 01:55 PM |#107  
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Quote:
Originally Posted by aristoc

My nexus C7 was absolutely fine since purchasing it from Tesco in store last Friday. No screen lift, flickering, burn-out... anything.

Today, after turning it on from sleep/screen-lock it was completely washed out as illustrated in the images above.

After using it for around 30 minutes to an hour the problem seemed to go away completely. The problem does seem to be dependant on the amount of time it is put to sleep. If i leave it for a minute or two then I get noticeable image retention. If I leave it for a few seconds I get no problem at all. If I leave it for 20 minutes or more I get full-on wash out and image retention. It's like the sun threw up on it.

My question is: Since it was absolutely fine for around 5 days or so, is this a hardware or a software issue? I haven't done anything unusual with the tablet over the last 24 hours. It hasn't been moved around any more than usual or dropped or whatnot.

Also: Should I RMA it? I can ring up Tesco tomorrow and probably arrange a replacement - but i'm worried the replacement will have screen lift! I'm also worried this problem will return again in another 5 or 10 days on an all new device. It really is strange.

John

I have the identical problem with image retention and screen wash out. When I switch on my tablet in the morning it's completely washed out and takes around 5-10 mins of playing something or around 30 mins of just lying idle and on to get normal. However after that it's perfectly fine. When I put off the screen (when it's fine) and put it on again after 5 mins or so, it's washed out on the edges and then gets fine in around 3-5 mins. I really don't know what to do about it. I could get a replacement but that would take 25-30 days to process and ship from the US.

So will something like an Update/using a different Rom or Kernel fix this?
6th September 2012, 04:02 PM |#108  
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I also have the same problem. It was fine for the first few days, but then it developed this problem. The longer I leave it switched off for, the longer the problem persists for.

If I connect it to the charger and tick the dont sleep while on external power and then leave it, it will always be perfect when I come back 10 minutes later.

With all the other problems I have seen people posting about, I think I will wait to return it until after there has been an update and/or the older units have been purged.
6th September 2012, 05:15 PM |#109  
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Originally Posted by Tweaken

My new one seems to have a flicker problem now. Most noticeably when there is a white background. Anyone else have a problem like this? Almost seems like it's stuck between switching brightness levels, but doesn't know which way to go.

Is the flickering you're noticing in the Google Now, google search (from the launcher), netflix or youtube (with no auto brightness)? I never noticed any screen flickering except when on one of those apps at minimum brightness. Netflix was the worst, I just bumped up the brightness a few percent and it went away. I haven't noticed anything while reading any ebooks or browsing the internet.

I'm sure it's been mentioned in here but all the Tegra 3 devices have "Nvidia Prism" which constantly adjusts the screen's backlight while adjusting the contrast to save battery while watching video. For some reason on the Nexus while at minimum brightness it doesn't work well and makes the screen look like it's flickering. Prism is also the reason why the screen looks really washed out after watching a video, and turning the screen off and on again fixes it (or waiting a while). It's a known issue and hopefully Google fixes it with a software update.
6th September 2012, 07:37 PM |#110  
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There is something wrong with mine in that it seems the display just isn't clear, it's like it has some sort of translucent haze. When I first got it and fired it up it seemed impressive but now I find it is just a lot of eyestrain.

I have a second one coming and if it is any way less than perfect it will be going back and then I am done with this device. Doubly so after today's announcement of the Kindle HD.
6th September 2012, 09:22 PM |#111  
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Hi guys, bit of an update from yesterday and some clarification.

First of all, Tesco were pretty great about the exchange, given that my nexus was still within its 10 day 'returns' period - they swapped it out in-store for a (to my delight) a C8OK which so far has nothing wrong with it.

Now, on the nature of the actual fault discussed in this thread. I'm aware that there is another issue doing the rounds on 7's which involves the tegra prism jobbo. This causes washed out colours with little contrast after viewing HD video or other such full screen 'stuff' and can be solved either via script, app, or directly disabling prism in the /sys tree.

This problem is distinct from that experienced by myself and others above.

The washed out screen after playback issue is solved almost immediately upon disabling prism. It should also be noted that as far as I can tell, the prism issue is in no way as problematic or indeed noticeable as our complete and utter sun-vomit condition. A key feature of this wash-out being that it is not effected in the least by the disabling of prism. I have played around in that /sys tree quite a lot and no enabling or disabling of anything yielded any positive effect.

Our problem is also non-dependent on video playback. I hadn't watched a single video on my nexus when mine suddenly became white-washed yesterday morning. And in some strange paradoxical behavior in contrast to the prism bug the white-washing gets worse if the device is turned off and then on for extended periods of time. When I got to the store today for a replacement I didn't even have to explain what was happening, I said 'turn on the device and you'll see what's wrong'. Sure enough, having been powered down for a few hours, the entire screen was as white as snow.

Another distinct 'feature' of this problem from that of the prism bug is that our white washing is accompanied by some pretty atrocious image retention. I'm not talking a faint shadow here - I'm talking being able to read the address bar of chrome having closed the app and returned to the home screen. Or being able to see emails in readable clarity from the home screen having exited the mail app.

But the strongest distinction between this and the prism bug, I feel, is reproducibility; or lack thereof. Of those reporting this problem, the vast majority found that it happened 'out of the blue' after days, or weeks of use. No change in environment or use of the tablet, no new application installed or sudden marathon of videos. To my knowledge no documented sequence of events on the tablet renders it permanently white-washed in this manner. It 'just happens'; and in this way is not reproducible in the slightest for users who don't already have the problem. The prism bug, on the other hand, is easily reproducible by (i think?) any nexus user simply by watching HD video for an extended time and then returning to the home screen. It is this distinction in particular that, to me, suggests that the problem is hardware related.

Software, no matter the language or the architecture, is not some magical goo that does what it wants when it feels like. Computers of any kind will do as they are told, and if undesirable or paradoxical behavior is exhibited, then it because of some oversight by the programmer. The program is doing everything it has been instructed to do, and will continue to do so ad infinitum if instructed. The 'bug' in this way is reproducible, provided the user follows the exact same sequence of events as those which produced the bug prior. I would suggest that reproducibility in this manner is necessary in the identification of a software bug. The prism bug is indeed reproducible in this manner, but the white-wash bug I and others have experienced in this thread is not. In fact for the majority of users it occurred after days of normal repetitive use.

The reason for my rant is that I'd rather not see this problem grouped in with the prism bug and waved aside as some trivial, known matter. It basically renders the nexus unusable in some circumstances and in my view is quite probably a hardware issue which is not going to be fixed anytime soon.

You might think my logic flawed, and if so please do provide a rebuttal. The last thing I want to do is spread misinformation. But again I will reiterate; this is a non-reproducible fault which behaves in markedly different ways to the known prism bug. In fact it is identical to the fault found on the I/O tablets issued earlier in the year.

Many thanks for reading my rant! lol. Excuse my poor writing as well, i'm in the middle of a horrible hay fever attack, lol.

John

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