yashsingh1/xdaforums huggingface dataset:
[HTC One X] WESBAR:
Yeah my DOA replacement runs out this week too! Think I'm just gonna keep mine. The only issue I have is the rippling effect when excessive pressure is used on the edges of the screen which in my opinion is not a design flaw, more a trade off for the bevelled screen which I love.

Sounds like too much of a lottery at the moment and theres a fair chance I'd end up with one a lot worse. If the problem manifests itself, I'll just use the 12 month warranty. Simple. My main problem is reading too many forums and then looking for problems I never would have seen!
[HTC One X] Trev16v:
It is by having the brightness fully reduced to minimum that the flickering is perceivable on mine, and pretty much only when the CPU / GPU is doing some number crunching.

For this reason, if there are no background tasks consuming significant CPU cycles (to my knowledge) and if I'm just sat there staring at a coloured screen, even with the brightness fully down, I might not notice it. Therefore, by simply staring at a static image or colour, you may not see the problem.

Therefore the way I've demonstrated it to a couple of people is to have a greyish or even a completely white image, and then occasionally jog the launcher UI left or right a bit (but without completely flipping between launcher pages) which I think is quite graphically intensive because of the transitioning effects. Or, go onto a grey, light blue or white preferences page, and scroll it up and down; the increase in processing when I do that intensifies the flicker.

Another way is to load Skype with the brightness fully down and look at the blue background and white cloud while it's initialising.

I have to admit... you are totally right there. I mean, I came across these threads in the first place because I did notice some slight flicker. But knowing it's an actual problem has kind of made it worse, when in reality I could have probably just put up and forgot about it. Stupid, I know!
[HTC One X] unknown4143:
Like I mentioned it earlier, the last update (1.29) makes the screen flickering getting worse.

But maybe it could be a good news !!! In fact the debate on Hardware or software problem can be solved. That almost confirm screen flickering can be solved with a software update! (If it’s possible to make it worse using software, it should also be possible to make it better!) More simply, this update as proved that it was possible to influence the screen flickering through software! This is the first attempt, I’m sure next update will be the one ! (pun ) ;)
[HTC One X] Ripley:
Or maybe the update was meant to fix it using software, and it not only failed, but made it worse.
[HTC One X] aslan93:
Mine only flickers on higher brightness never on low
[HTC One X] unknown4143:
In fact... The other possibility is that all devices don't react the same way; it would be surprising if HTC didn't test software before releasing it...
[HTC One X] evo6:
My sixth device has no flicker and my brothers second device has no flicker. So everyone that has it keep returning it you will get a good one eventually.
[HTC One X] meshoe:
I first saw a sort of flickering when I had auto-brightness on. I jumped on the forums and saw about these flicker problems and then I found that I have this flicker on gray colors. I barely noticed it, but it was there. After this 1.29 update I don't see it anymore. I tried a lot to notice it, but it seems to be gone. Dunno, maybe I was lucky :)
[HTC One X] mitas35:
enyone else??????::confused:
[HTC One X] aslan93:
The flicker stayed for me after the stock update will try arhd when it gets uploaded, doubt it will be any different although among the changes are UPDATED TEGRA DRIVERS !! this could well be the problem causing flicker and if the update doesn't solve it then I'm afraid there's nothing we can do software wise at least for now ..
[HTC One X] Tondern:
Here are my findings on the matter. I had a moderate flicker problem until 1.29 which was most intense on low brightness. It could really go crazy when i ran the quadrant benchmark where the CPU tests have the grey background. Also browsing around in the Play store or other grey/white backgrounds could trigger it.

However after 1.29 it has been improved a lot. The flicker has now mostly been replaced by a SINGLE shift in brightness which then stays stable. However there still occasionally is a tiny bit of flicker but it's limited to lowest brightness now.

I can now mostly ignore the problem just like I did with the yellow left side of the screen on my SGS-2.

I'm interested in your experience on the matter.
[HTC One X] coupduberger:
I also had moderate flicker in lowest brightness setting, in Messages app for instance. Now I'm on 1.29 (ARHD 5.0.0) and nothing has changed, apparently...
[HTC One X] hamdir:
yes the first second I opened it was clearly flickering then it went away for good?! did it adjust or my eyes did?

never seen flicker on this device before

I can see backlight adjusting some times when switching between stuff but the Darth grey made it go amok for few moments and then it settled really strange

now when I open darh grey it immediatly adjusts n see no flicker
[HTC One X] HaTeC:
1.29

Still flickering like a strobe.

LCD density is ****ed up now also, everything is much "bigger"

oh boy...
[HTC One X] cagdasal:
So im on my 4th device now, had it replaced on friday, did not have any flicker until today. On all my previous devices i used to get flicker on low brightness and white images, now im getting flicker on grey images on all brightness settings. Im using the Dead Pixel Detect and fix program and just setting the colour to grey...flickers like crazy, actually gives me a headache!
[HTC One X] hamdir:
did you try changing the font size in the display settings?
[HTC One X] HaTeC:
Yes, it's not about the fonts, it's about the icons and menus GUI.
[HTC One X] xgolyx:
grey flicker

Just browsed thru some web sites and there is there are couple of threads about nvidia video cards having grey colour flickering problems which has been fixed by soft update. I think it might be tegra 3 chip related issue.
[HTC One X] holygeesus:
If it is software related why isn't it affecting all units?
[HTC One X] aslan93:
Some units have different screen. I have the more white one and the ones I see in stores that don't flicker are more yellow..that being said the problem we are having could be related to how the software sets the voltage for the screen or the processor.. different screens need different values so it is technically a hardware flaw however there is hope that some tegra drivers update could solve the issue. And yes I'm 100% sure its processor related
[HTC One X] lawrence750:
on a bright note for everyone with flickering, i've received my 5th one x today. And holy crap, can't see any flickering (and I've been looking VERY closely, since my first device). No flickering when i plugin the charger, and none otherwise, not yet anyway.

However.... this one has a dead pixel, and some weird speck under the screen, which looks like either dust or an imperfection in the glue. so back it goes.

EDIT: i was even considering living with the dead pixel, but now i've noticed 2 separate issues on the screen, im pissed.
[HTC One X] holygeesus:
My device seems to have a sweet spot where I can see no flickering. At about 70% brightness I see none whereas at other settings I have slight flickers occasionally. I'm going to give it a while for the dodgy initial batches to filter through then will see how the land lies
[HTC One X] Brac20:
Screen flicker on mine isn't terrible but it is present. I'm going to stick with it for now as getting an exchange won't be an issue for me luckily.

If software doesn't fix it hopefully later batches will have better hardware.

I love the phone overall though as type majority of problems are annoyances rather than deal breakers.
[HTC One X] AndroidInsanity:
MY screen flicker varies, one day its flickering like hell, then when i restart it is no where near as bad, but still slightly visible.

Has anyone else realised this? Try it :)
[HTC One X] mixxy:
i only got the flicker problem AFTER i installed ARHD 5.0, Before that it was never there. Will try to revert back to leedroid to check if its still there and report back.
[HTC One X] wietse1988:
I have my second device for 4 days know, can't see any flickering. Still have the feeling it wil go flickering, some day.. Can't believe it isn't flickering after 4 days,, when I saw the reactions of others who've changed there device multiple times.. Am on the latest update, 1.29.4 I'll give another update about the device after one week.
[HTC One X] vegetaleb:
Don't worry, you are not the first who received a replacement and didn't flicker,new batch is at last distributed and corrected
[HTC One X] Ripley:
I just hope HTC don't have to pay if the screen fault is down to Nvidia/screen manufacturer
[HTC One X] Mazzstrikers:
Not to worry. I don't have this problem so chances are that HTC will replace you one that doesn't have the problem. Not like my previous galaxy nexus where all units have the problem of graininess and banding so no matter how they replace mine it will still be the same.
[HTC One X] pewpewbangbang:
HTC don't replace. They make you repair which takes ay last two weeks and sometimes they don't fix it I heard
[HTC One X] turbox:
I confirm.

My One X is just back from HTC repair center (I've received it yesterday). They just updated the device.

Today my One X is little flickering ... :(

One week to play with it, 2 week in repair center, one week to play with it, 2 week in repair center ... to be continued.

HTC created the first middle-time phone.
[HTC One X] vegetaleb:
Or you can wait for OTA
[HTC One X] aslan93:
OTA doesn't fix it
[HTC One X] J_Bot:
Hey everyone,

So I found this post from the HTC One S forum. A few of us just getting our phones with T-Mobile seem to have this issue, does it appear described in this thread?

http://xdaforums.com/showthread.php?t=1620595

If so, what's the deal? we have a different screen AND graphics chipset...
[HTC One X] Mazzstrikers:
No you must force them to replace. Under consumer rights they have to replace if its a serious problem. They have to provide a full refund if it is a inherent problem (occurs on all sets of the same model).
[HTC One X] Mazzstrikers:
You guys have to force them to replace. Once they open your phone to repair, you never know what they do to your phone. Force them to replace until you get a good set. If after a few sets all have this problem, you argue that it is an inherent problem and force them to offer you a free refund that's what I did with my galaxy nexus.
[HTC One X] johnbhoy89:
no its not,

the screen flickering problem is like a light strobe effect on predominantly grey screens
[HTC One X] lukeyboymac:
Just tweeted HTC re the issue and got a reply saying they are aware and shortly bringing out an OTA. Trouble is, being on T-Mobile UK means that because I have a custom start up, some ring tones and and a changed internet icon I can't get their normal OTA update. Heck, T-Mobile haven't realesed 1.28 yet, let alone 1.29...so what chance of getting 1.30. I therefore want to wait until it's a confirmed fix before rooting and playing which is annoying to say the least.
[HTC One X] DanteGR:
Third post confirming that HTC are aware of it and bringing out and OTA.

Many thanks for sharing my friend :)
[HTC One X] double_ofour:
Can i see a screenshot of those tweets? or links? you know, just to make my self feeling less stress about this crappy htc..
[HTC One X] expertzero1:
google

TWITTER HTC
[HTC One X] lukeyboymac:
@htc@lukeyboymac*We have begun rolling out an OTA update for this issue. Stay tuned. It may take some time to get to all countries and carriers.

I'm just nervous on the 'we have started' part as it appears that 1.29 hasn't fixed it so hope they are referring to 1.30+
[HTC One X] double_ofour:
I've attached the screenshot for that tweet..

I have a doubt here, i am thinking that htc is saying that they already started to roll out the update to fix this issue (screen flicker). arent the HTC reffering to 1.28 update that fixes the screen rendering garbage issue before? and not the screen strobing flickering issue?..
[HTC One X] lukeyboymac:
Thanks for taking the time to black out my name too. Very thoughtful. I would have uploaded it if this app let me load screenshot saves...
[HTC One X] japjit100:
htc

this is a tegra 3 driver problem.

display corruption is software problem.

screen flickering is a hardware problem

see that

http://www.youtube.com/watch?v=hxyTUc2cVTw

:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D:D

:D:D:D:D:D:D:D:D:D:D
[HTC One X] vegetaleb:
You mean that:

http://www.youtube.com/watch?v=r1wl8Aau96s

I don't think it's hardware, just an overcloaking of the CPU by nvidia, it will be patched by OTA sooner or later
[HTC One X] DazNoonan:
I'm still at a loss to if I think its software or hardware... From the start I thought it was software, but not my 4th device has not had any flickering problem at all and I've had it since last Friday (so 5 days in). This makes me think there was something wrong on the others which would be hardware.
[HTC One X] kilohercas:
it just can't be CPU clock related.

How can it be, that grey box surrounded by other colours are flickering, while other collors are solid as rock ?

if i could connect my phone to oscilloscope and see driving pattern i can at same second say if it's hardware problem or software.

idea is very simple, use logic analyser for RGB data lines, if all it's ok, data shouldn't change in time while displaying grey background ( but just only than all screen have same hex code for colour) , but if data is constantly changing ( i guess that would be some LSB of RGB line ) that would indicate that is software or some weird Tegra3 problem.

So if RGB data line is fine, that would mean LCD controller problem (maybe some registers in controller is not functional while manufacturing , i have no idea)

I don't have back-light issue, just grey colour is mestup here

(last time i connected my HTC desire to logic analyser i find out that my perfect 16M amoled has only 65K colours because of 16b RGB line :D

and software related test show same thing )
[HTC One X] eve7:
If it is a hardware issue will HTC still be able to fix it with a ota update?

Also, there is a lot of confusion with the screen flicker from the screen banding which is a long thick line at the top or bottom that happens in landscape. I really hope HTC are aware of the actual screen flicker that happens when the whole screen flickers on certain tasks and colours mostly grey.

Sent from my HTC One X
[HTC One X] farnsbarns:
They do, it's all in the OP.
[HTC One X] xgolyx:
What is OP?
[HTC One X] farnsbarns:
OP = original post or original poster.

That said, I was wrong, confusing two threads. Long story short, they're very aware of both issues.
[HTC One X] xgolyx:
Is it possible to swap phone in carphone warehouse after 3 weeks having backlight high brightness grey flickering? Anyone plz?
[HTC One X] farnsbarns:
Legally? Yes.

Easily? Ask them, let us know what they say.
[HTC One X] cagdasal:
You can, i got mine from the carphonewarehouse and have had it replaced 4 times. They didnt really give me a hard time at all.
[HTC One X] xgolyx:
Just swapped phone. So far so good. Thx xda forum for help.
[HTC One X] godess:
OIn my opinion the problem is the nvidia graphics chip, nvidia is the most buggy glitchy graphics I've ever used... Why couldn't they use ATI?? .. I had my one x for 2 days before it started having the spastic colour glitch.. I'm on o2 who haven't a solid given a solid eta for the updates... I will be stuck without a phone until a replacement is sorted out :/
[HTC One X] twistedh:
As far as I'm aware, ATI don't make GPUs for mobile phones mate. I could be wrong, but I've never heard of them doing so.
[HTC One X] lawrence750:
+1 afaik ATI have only just made an soc for PCs let alone a phone
[HTC One X] hetalmp:
That's sounds easier then the pain I'm having with dialaphone, 1 week turn around!
[HTC One X] godess:
Yeah I know they really should though, nvidia chips are very glitchy
[HTC One X] Eggcake:
ATI doesn't exist anymore. ;-)
[HTC One X] twistedh:
My gfx card in my pc says otherwise :-P

Ati, amd, same **** :-)
[HTC One X] Croak:
And AMD sold the ATI mobile graphics division to this little company called Qualcomm. So Adreno is ATI, if you want to stretch things. :)
[HTC One X] BarryH_GEG:
CPU Variance Test (Impact of H/W on Flickering)

Guys, those of you that are rooted read this thread.

http://xdaforums.com/showthread.php?t=1632354

More2come found out something interesting about CPU performance using TegraStats from the market. It would be interesting to see how different phones perform. And more specifically, whether flickering phones are reporting different CPU stats than non-flickering ones. If there are big variances in CPU stats between devices it could help determine if there's a pattern and potential link between that and graphics issues. Also, I'd be willing to bet the CPU settings will be changed between updates so this is way of observing what Nvidia's doing to tackle battery life and fix the graphics issues. There have already been some reports of lower benchmarks with 1.29 which indicates Nvidia's playing with the CPU settings. They did the same thing when trying to address the Asus Prime's issues (with sometimes odd results).

Here's the link to the app in the Market but you have to be rooted to use it.

https://play.google.com/store/apps/...did=de.jonaspfeifer.android.tegrastats&rdot=1
[HTC One X] wietse1988:
I have my second HOX for one week now, and it's starting to flicker again.. @ the moment I can only see it @ the grey colors. Yesterday when I used the phone allot, it was the first time that the battery temp went over 40 degrees, it even run up till 44. Today the flickering is back, so maybe it is a hardware problem. I'm on the latest version 1.29.4, for 2 days already, the first day I didn't see any difference. I don't know if I should change my phone again.. Anyone have any thoughts about this??
[HTC One X] twistedh:
From the different conversations that people have had with HTC live chat reps and other responses in different threads - HTC have stated that it is a software issue that they are trying to resolve.

This is the only reason I haven't exchanged my handset yet.
[HTC One X] Robpollard:
I have 10 days of "instant exchange" left, where I can give the handset back and get a new one without questions asked.

The problem is nicely demonstrated by downloading the app "Color Wallpaper", where you can switch easily between different shades of grey.

Because I'm having the issues mostly on the grey shades and a solution might be in sight, I will wait for 7 days and when there's no cure in sight, I'll give it back.
[HTC One X] itsmoe:
You can download the Screen Test app from the market, make sure you're on the grey screen or the lined grey one and then click the three dots at the bottom which will refresh the screen and you will notice how slow the refresh rate is.

I replaced mine and the one I'm currently using is working fine. So I do recommend returning yours.
[HTC One X] Brac20:
I had flicker after a few days but I've noticed it in a few days now.

I don't know if its because I've not been on the brightness level that was triggering it or what but it definitely isn't getting worse. If they bring out 1.30 (if it contains a flicker fix) soon then I am hopeful I have seen the last of it.
[HTC One X] Dave Trouser:
An observation

I'm on my second One X. The first (HT23) had all the problems - flickering greys, jumping screen, etc.

This second one (HT24) only seems to have the camera corruption bug, triggered only if I deliberately do so via the notification bar (I have v1.26 O2 firmware). As that is fixed in newer software, I assume the hardware is good on this device.

Something I have noticed whilst testing the display extensively, is that the backlight auto-adjusts depending on what is being displayed - regardless of the auto-backlight setting, which depends on ambient light.

This is typical of a contrast-enhancing technique to improve the apparent contrast ratio. Most LCD TVs do it unless you turn it off.

I wonder if the flickering problem lies in the algorithm for the contrast enhancement? If some component value is off-spec then perhaps it gets stuck trying to compensate when greys dominate the screen?

This effect can be seen when using Display Tester, moving between the mid-grey and full-white "dead pixel" test screens. Drag between them slowly, and as the white approaches 30-40% of the display area, the backlight will fairly suddenly brighten slightly, and dim again when the white is dragged off-screen.

What if some phones are getting stuck at the point where the backlight level is switched? Not quite deciding on either state, and hence flickering.

My new second phone occasionally exhibits a faint flicker when rapidly switching to a mid-grey screen, but it lasts maybe 0.25 to 0.5 of a second. My first phone would flicker constantly under the same test.

This absolutely has to be a hardware issue, perhaps as I suggest, an off-spec resistor somewhere, or a dry joint. Whilst a software fix might be possible, I wonder what effect that may have on phones that never had the problem?

I'd have to say to anyone with the flickering problem - send the phone back and get a new one if you still can. My second phone is so much better than the first one I got, with identical software/firmware.
[HTC One X] aslan93:
This HT23 and 24 crap is absolutely irrelevant I've been to about five stores where I've seen phones from ht23 some running 1.26 and NONE of them had even the slightest flicker
[HTC One X] hamdir:
again Tegra3 has a back-light control power saving feature most likely causing the flicker, at the very least HTC can offer the option to disable it
[HTC One X] ceo.mtcl:
I agree, I have ht23 and my phone is perfect.

Sent from my HTC One X on Leedroid's ROM v5.0.0.
[HTC One X] Dave Trouser:
I only mentioned the serial batch in case someone asked.
[HTC One X] Traniz:
Not sure why people call it flicker since it's artifacts...
[HTC One X] Dave Trouser:
That makes sense, as if it's not a contrast feature, then it would indeed save power to dim the backlight when the screen is dark (as black is the most power consuming on an LCD).

I'm not sure it's right to say the Tegra 3 power-save feature is the *cause* yet though - given that quite a few (perhaps many - how would we know?) One X displays do not flicker. It is strongly suggestive of a manufacturing process defect, such as a dry joint or bad component screwing with the backlight algorithms, or maybe even some bad Tegra3 chips.

Of course offering the option to turn the feature off is a good idea, but from what I can see on this forum, it would only be a work-around for what is clearly a hardware fault with only some phones.

---------- Post added at 04:44 PM ---------- Previous post was at 04:44 PM ----------

I think you may be describing an entirely different problem.
[HTC One X] Traniz:
I get this on some spots (address bar on web browser twice).
[HTC One X] hamdir:
most of the glitch issues are sorted by firmware 1.29
[HTC One X] Traniz:
http://imgur.com/hhFrS,MxkzX#0

http://imgur.com/hhFrS,MxkzX#1

I can't update (read sig).
[HTC One X] keeiL:
Not sure why you're addressing artifact issue in a screen flicker thread... please learn the difference.

We are talking about a backlight strobe effects, aka screen flicker :)

So are the HTC tweets addressing the backlight flicker or artifacts? lol

Chanses are that they are mixing these issues.