yashsingh1/xdaforums huggingface dataset:
[HTC One X] vegetaleb:
If you are not in a legal hurry (period of exchange) then wait a couple of days.

Now that sgs3 will be unveiled,HTC will work at 300% to finish the OTA fix
[HTC One X] Trev16v:
I'm in a similar situation.

My HOX just has a bit of backlight flicker on very low brightness settings.

I am currently one week into the fourteen-day period in which I can take the phone back into the Orange shop rather than having to deal with the hassle of returning it to HTC.

The other fact is that the two other colleagues' HOXs I tried also have exactly the same issue: slight backlight flickering or strobing, only on very low brightness. So that's 100% of all HOX phones I've seen have the same symptom (though I know this is based on only three sample points).

So, other than the slight flicker at very low brightness, my phone otherwise seems to be a good one (no other screen or build issues). If I take it back to the Orange shop now and try out a replacement in the shop, the one I bring back home could end up eventually also having the flicker or other issues.

So at this moment I am tempted to wait it out for at least another week and see if there is any hope of a software solution. The post from hamdir above regarding seeing many brightness commands in dmesg are very interesting indeed. I don't know anything about dmesg yet, but if hamdir is saying that this seems to be concrete evidence that the rapid fluctuations in brightness are due to firmware control, then I'd be feeling really optimistic indeed.
[HTC One X] hamdir:
Tegra3 is dancing with backlight all the time...its a battery saving feature! so we need to know if its "breaking" or "going amoc" for some of you

http://www.nvidia.com/object/tegra-3-processor.html

http://www.displaysearchblog.com/2012/01/nvidia-reveals-new-features-in-tegra-3/

i have to say i can see it in action on my HOX, switching between grey and white windows in the multitasking card view readjusts the brightness, also the darth grey test flickered the first moment and immediately stabilized

I know its a problem for some of you guys, but the more i read about Tegra3 the more i respect it as a mobile computing solution or if you want to go all conspiracy theory, it might be something Nv named later to answer the flicker problems with its SOC ;)
[HTC One X] Trev16v:
And a second point, does anyone agree that there are actually several issues at play here? From what I can tell, there are three issues (talking only of software / electronic issues - NOT counting build quality issues, like yellow screens, etc):

Graphic corruption. This being the problem that many people mistakenly think is the "flicker" problem, but it isn't. This is actual graphics buffer corruption. I have not had this problem personally. A lot of people are posting up YouTube videos mistakenly (and infuriatingly!) claiming to show the 'screen flicker', but their videos actually show this problem.

Very fast and consistent flickering that affects greys. When you look at grey colours, it's sometimes like looking at an old CRT monitor with a poor low refresh rate. I DO observe this problem on my phone, and it is not constrained to low brightness. You probably could not show this in a YouTube video. Another camera would not pick it up.

An inconsistent and erratic strobing effect that can be observed particularly at low brightness. This does NOT apply only to greys. For example, it can be clearly observed at a low brightness on a white settings screen. Loading the CPU seems to exacerbate it, so gently scrolling or nudging briefly worsens it. This is also apparent on my phone. Again, you could probably not capture this in a YouTube video.

We all know that the first point is a completely separate thing. The emphasis here though is on the latter two points. I think that what is reported as the greys / backlight flicker can actually be split into two distinctly different issues.

Edit: Again some interesting points from hamdir above. I think I'm just going to sit happy with this phone for now and see what happens. In no way am I bashing HTC or moaning; I'm just interested in the issue from an enthusiast point of view. :)
[HTC One X] dmestriner:
^ what he said :)

I'm also not bashing HTC, not going to return my phone, but I do seem to have the "bug" from point 2. I haven't tried bug 3, but cba to try that now. We'll see what happens, I think it'll all be sorted out sometime in the near future.
[HTC One X] Harnec:
I wish there was an option to make google play background black instead of grey. I hate to see flicker there.

Do all HTC One X phones suffer from flicker or are there a few w/o this problem ?
[HTC One X] hamdir:
non on my current hox, my old hox and my cousin's
[HTC One X] Ripley:
No flicker here, ever, but my first X did
[HTC One X] Harnec:
If all phones have the same software but only certain amount of phones have flickering how can it be software related ? Or how can HTC solve it via ota ?
[HTC One X] farnsbarns:
I know but, There were the same circumstances with Asus and Teg 3 and they did sort it via OTA updates.

Further, it seems odd to me that once someone has had a flickering phone it seems no matter how many replacement they get they all still flicker, where as those people who don't have the flicker, never seem to get it. I suspect there are some usage and environmental factors here. I am on my third one and they all flickered. I think HTC and/or Nvidea will bring software in line with with hardware tolerances that they are now seeing. In essence, fixing even those handsets that ain't broke. This might seem a shame, especially if the fix is to throttle something back but the software must meet hardware requirements and if they are seeing hardware outside the tolerances they expected they'll have to change the software accordingly across the board.

Despite being adamant that this could only be hardware at the early stages of the game, the more I listen to other people the more I come round to the idea that this can be fixed with software, even if hardware tolerance issues turns out to be the cause.

For example, and this is deliberately extreme, if they disabled Nvidea's PRISM technology, set the processor speed to a single fixed value and enabled all the cores all the time, disabled auto brightness and set brightness at a single fixed value, I feel sure we'd all see the flickering vanish. Of course, their solution will not be that extreme (hopefully) , just making a point.
[HTC One X] drew071:
Could it not be due to different hardware behaving differently to the software. I.e. there may be numerous panels by different manufacturers for the screen used and the software might operate quite happily with one manufacturer panel, but might be right on the limit of normal operation on another manufactures panel.

Although all manufacturers should be building the panels to the same spec, manufacturing errors could occur and produce what is happening.

All the same they might fix one lot of devices but cause an issue in others.

Drew071
[HTC One X] Harnec:
Thanks for detailed explanation, it makes sense to me now that flickering may be software related. As you have pointed out, once I lower my brightness to a certain level flickering goes away.
[HTC One X] ahmadcentral:
I get flickering on low brightness on grey and light grey/white backgrounds. Is this the screen flicker issue described for this thread? It occurs on the whole of every screen but is more evident with these colours. It happens when i touch the screen as well.
[HTC One X] farnsbarns:
Yep, that's it.
[HTC One X] pewpewbangbang:
While I've been on vacation in the Dominican republic. I've noticed by flickering on high brightness on grey colors had dramatically decreased since I first got the phone. I'd virtually non existent now. Really weird.....it's basically completely gone from what I can tell and had solved itself out. Maybe the heat melted some stuff back into place like those people that put their gpu's in the oven to fix it haha....but it literally has like fixed itself compared to originally before I came here.

Maybe my eyes got a bit more used to it. I can only see a hint of it now at max brightness and the other brightness are much better.
[HTC One X] HaTeC:
Did you bake it in the sun alot?

I am not joking.
[HTC One X] :
Well, I hope they solve it. And They better give us an explanation also, officially.

I've decided to get the Galaxy SIII - I think HTC will indirectly boost it's sales lol
[HTC One X] smoke2:
Well, it be interesting to know which manufacturers made displays for HOX? Someone know? My display look slightly yellowish at the bottom.
[HTC One X] pastey:
After a day with my latest replacement I wish I still had the last one, flickering much worse on this one, together with the screen gap so i have ordered another exchange (also not liking the looks of gs3). Also strictly asked for on from the new batch.. Coming Tuesday so fingers crossed..
[HTC One X] HaTeC:
HTC offered me to get a replacement if i send it in and they can see the flickering. I need to pay for shipping and wait 10-14 days... what if the replacement flicker again? i pay for shipping again and wait another 10-14 days? Doesn't sound like a good deal to me.

I am thinking what to do now, i don't have patience for this ****, last time ever i buy a phone on release, i am not being payed to test these products.

Looks like no one else was payed to test them either...
[HTC One X] nis-gens:
huh? I only have the flicker on full brightness :S, once I lower the brightness it goes away...

I thought that is the flicker this thread is about?
[HTC One X] HaTeC:
How low?

||-------o-------------------|| ?
[HTC One X] nis-gens:
around 25% and lower it is completely gone around 60% it's barely seeable and at 100% it flickers really obviously.
[HTC One X] mertzi:
if you wanna know exact percentage use an app called brightness control, it lets you manually write the values.
[HTC One X] Harnec:
more or less same for me
[HTC One X] sr1ks:
For the T-Mob Uk users, if CPW acts like they cant do deal, go to ChitterChatter.. thats where i got mine on the first day.. unbraded and running 1.28 now.. waiting for 1.29 though :(
[HTC One X] narcoustic:
I love this phone but to be honest it's a complete and utter shambles by HTC. I was reading about bugs and problems with this product a mere few days after it came out.

My device was fine initially then I noticed corruption after a few days in the browser, I switched to dolphin hd and haven't seen the corruption issues since. Sense has been a memory hog since day one - constantly relaunching the launcher after only opening a few apps which was a pain as it took a good 30secs for sense to load, I've switched to apex launcher which is better but still has re draws more often than it should.

And now.. The last few days I've noticed the flicker problem which seems to be getting worse but only affects a certain shade of grey. I'm reading people who have replaced their handset 4,5 even 7 times in order to get a fully functional handset which is a complete joke to be honest!

I will hold out for a software fix as I'm well inside my 28 days but I am not at all impressed. My sii had a few issues at launch, namely the camera pink spot but nothing so detrimental to everyday use as the problems the HOX is experiencing.

Just an absolute shambles

Smh

P. S

The flicker seems to mostly affect the third shade from the left overspilling slightly to the immediate shade to the right:

Lastly does anyone have an issue with the launcher completely refreshing if you change the brightness level with a toggle widget? Every time I change the brightness using the switch widget.. The launcher re draws.. Wth!
[HTC One X] adamgaltress:
I never had corruption in my browser and I haven't had sense close on me at all
[HTC One X] brent8577:
I just now saw flicker on mine but it was with stock browser on an android news site article with 113 disqus comments. It went from comments to blank repeatedly so bad that I tried chrome beta, and it stopped. If this is why people are returning all of their phones then I feel bad for HTC. It's a software bug.
[HTC One X] twistedh:
Are you talking about when a portion of the screen goes all digital/with different lines?

The thread is on about the screen back light flickering - like a strobe light effect buddy.
[HTC One X] brent8577:
I'm talking about scrolling a huge list on a web page and seeing flashing white space instead of the words. There are no lines.
[HTC One X] emrahunal:
Just bagged and tagged mine for a return + refund... I still do hope that this is a software issue related to power management like many others before.

A friend of mine said that Desire HD had exactly the same issue and was fixed with an OTA update. I couldn't find anything about this, but can anyone remember something like that?
[HTC One X] farnsbarns:
I had one from launch day, so did my brother, never saw or heard of any flickering on those.
[HTC One X] mertzi:
besides the backlight flicker my new one x has a low lit back button and the touch issues described in this video.

http://youtu.be/Dl1X37IyzdA

it is HT24. I must say I am really impressed by the work the QC has done here! Doing another DOA and if the third one has issues I'm jumping ship. Too bad as I don't think the SIII is a match design or spec. wise. Then I think I'll wait until the first quadcore phones with Ubuntu for android arrives.
[HTC One X] hamdir:
after an exact week of purchase without flicker and without over heat, my device just crossed 55 degree and hey presto i have flicker in grey

keep in mind i never had this problem before

i turned it off and i'm letting it cool off to see if it will get back to normal

and update: booted and its gone

definitely heat related guys
[HTC One X] Masor:
I have the flickering issue where its more prominent on gray backgrounds

Sending my One X off to HTC to repair (i hope they repair it anyway)

Cant be chewed replacing and replacing, already replaced this one due to the wifi not going further than 15 feet.

Fingers crossed the engineer looking at it actualy does his job and looks at the flicker and doesnt just open it see no flicker and send me it back
[HTC One X] hamdir:
pointless to fix or send back, my device was flicker free, until it crossed 55 degrees with screen on and so i got it

it disappeared now that it cooled off and rebooted but don't know if permenant damage happened

its pointless since the One X will always overheat at one point for what ever reason, as HTC said they consider it within normal operation

low power + wifi, heavy gaming, charging and consumption...one point your HOX will heat and flicker might occur

im thinking if Tegra3 is controlling the back-light all the time as evident in dmesg (PRISM?) maybe when it over heats it run amok, if so HTC might fix it in sw

but if the blacklight is getting damaged under heavy heat...oh boy

my hox: is officially under observation now and i won't exchange it (i was considering for the white pixel lol), i will keep it and see what's going to happen

if a flicker free device will catch flicker, than seriously there is no point in exchange, now we wait for HTC or the HOX is simply operating outside its safety limits! and they have a class action bomb cooking
[HTC One X] WebghostDK:
Weird. I had all of these problems but the last 2 OTAs fixed them for me, i cannot reproduce them either like i easily could before :)
[HTC One X] hamdir:
are you talking flicker on grey? i personally think its temp related

yup i definitely have it now, it quickly stabilizes though but its still a non issue for me, unless at one point it locks flickering then Huston we have a problem
[HTC One X] HaTeC:
Actually my phone went hot as hell a couple of times before the update and before the flicker **** started now when you mention it... it was flicker free out of the box.

If the heat really damaged the phone then oh wow, this is going to be glorious.

I am not sending my phone anywhere because of a few reasons.

If the heat actually damaged something and that's why some have the flicker and some don't then this will get very interesting the comming weeks.

Can anyone still on DOA period overheat the phone to check this out?

It might happen by itself after your DOA period so it's actually best for you to try it out.

This is the best lesson in consumerism i have ever had in my life, i am starting to look into getting a lawyer.
[HTC One X] hamdir:
simply i forgot my screen on for 1 hour inside the pouch (no time out)

and when i pulled it out it was hot, checked it at 55 and then went to the display tester because i felt some flicker and it was there

rebooted and now its a lot better, but i can still catch it sometimes the temp is cool now, if i catch it in some grey it flickers and quickly goes away

the whole thing might be related to Tegra3 Prism back light control and so i still think a software solution might still be possible
[HTC One X] HaTeC:
It gets better and worse based on battery level and temperature

So i still have hope for a software fix.

Which is the best option right now for me.
[HTC One X] hamdir:
i think the best option is to wait and see from now on and just enjoy what we have

alas, ill stop agonizing about the issues

if its truly early productions issues ill swap my HOX in a future point or if its truly a disaster than the we have no choice but to go else where

but definily too early to declare anything especially since HTC is communicating with us about this specific issue, we also need to inform them about screen lamination too

farnsbarns can you please if they contact you again, in form that we have a high number of users reporting bad screen lamination?
[HTC One X] HaTeC:
so i am not supposed to get any ripples no matter where i press the screen?

I get ripples on the edges and hear creaking noise...

That + the flickering really makes it impossible for to ignore how ****ty this phone is, sorry man....

It really looks like dumping this on ebay is the best option, let somone less "picky" ( by todays industry standards ) enjoy the phone.
[HTC One X] farnsbarns:
You mean sell something you believe is faulty on eBay. You gonna outline those faults in your description? Why not return it?
[HTC One X] hamdir:
depends on how hard mate

my second hox ripples under very intentional effort outside edges

my old one too but that had a soft edge on the left plus light bleed all around so i concluded the lamination was really messed up and got rid of it, the new is a lot more rigid and no bleed ripple never occurs unless intentional, i dont find it a problem in this case

i tested one that rippled like crazy on the lightest touch to the corners

we have one and only one lol that does not ripple unless you are almost breaking the glass

so we are simply getting varied quality of screen lamination, translating to varying amount of flex, ripple and creaking

in my opinion someone is clearly tolerating these issues and allowing them out of factory doors

i dont mind really just give us the choice, put some damn secret code and sell the fine ones at higher cost but let me be able to choose what im getting

if we had kernel source we could have tried to disable this whole prism back-light management and see if it works
[HTC One X] jpinks:
Well had my One X for a week and its had flicker from day one. Actually was getting worse. I could see it on low light on the grey at first but has worsened since. Its going back today and I have to say thanks to this thread because its the only reason I got a full refund via Newegg. Phone ran great no lag but the flickering kept getting worse. I did notice it more if the phone was warm. Gonna try the ATT version god I hate going to 16Gb.
[HTC One X] hamdir:
well i just used the 1.29 RUU and its gone, while on charge no flicker what so ever

i really think this will be solved soon by software
[HTC One X] josuetenista:
I am a Asus Transformer Prime owner and the tablet used to have the exact same issue. This was corrected with a software update. Hopefully.

Waiting for my new HTC OX to arrive next week
[HTC One X] freemini:
This issue is pretty much the only thing holding me back on buying it right now. I'm sick of display issues and this would surely annoy me a lot. I was wondering if the white ones have a tendency to flicker more than grey? White devices seem problematic :(
[HTC One X] hamdir:
no once it flickers it flickers on all of them but since related to heat, i think the less healthy tegra3 i mean the more sensitive to heat the more you get flicker

anyway ever since i learned about Prism and sow tegra3 playing with the backlight when i ran dsmeg im pretty sure its a power management thing
[HTC One X] freemini:
Yeah thx, I've been following the thread but couldn't recall if there's any difference between the two colors. I'll wait for HTC to release some clear statement/OTA, meanwhile I'll be following this thread too.
[HTC One X] hamdir:
but like i said i almost freaked out when flicker came to me on my flicker free device after i let the phone cross 55 degree today with screen on

i flashed the 1.29 RUU (previously 1.28) and no its gone for good

this is can't be hardware, if its hardware it shouldn't heal
[HTC One X] HaTeC:
I am on 1.29 already :( and it flickers... wtf?
[HTC One X] oxfordmark:
HTC have said that 1.29 doesn't fix the flickering, the next one will.
[HTC One X] :
To the OP, a great thread. My 1st One X had a yellow spot on the top right corner of the screen. I have a 2nd One X and it's faultless. HTC dropped their game a little bit. I have had 6 HTC handsets before the One X:

HTC Touch Pro2

HTC HD2

HTC Desire HD (A9192)

HTC Inspire 4G

HTC Desire

HTC Sensation

and none of them had faults. HTC was a bit slack with the One X. So many screen problems that I have read in different forums. I hope they pick up their act.
[HTC One X] jpinks:
If it gets fixed from software I would probably order another and give this one to wifey. :D But HTC's lack of comment on this issue has me more scared since unlocked phones thru Newegg only have 30 day return and 90 day replacement only policy. I did get the 128 update shortly after I got the phone, didnt get the 129 update and still seems like its a mixed bag if it fixes it or not.
[HTC One X] hamdir:
this morning when it overheated to 55 it flickered bad

i just played for over 1 hour THD games and it never crossed 45 degree on RUU 1.29 and absolutely no flicker despite being at low brightness and low battery, this is for sure all software related, no hardware damage can be so random

am i also convinced over heat is software caused too

relax guys
[HTC One X] :
Are you sure it's not yellow for all of the screen? It's possible that Sharp make the yellow screens, and Acer make the clear screens.
[HTC One X] smoke2:
Maybe all screen is in yellow tone, but Im not dissapointed about this. No yellow spots also on mine. So the manufacturer of my screen is Sharp :)
[HTC One X] hamdir:
after 1.29?
[HTC One X] janne303:
Is this solved now? Nobody has said anything in a whole day hehe

Skickat från min GT-I9100 via Tapatalk 2
[HTC One X] joplayer:
No. Some have been able to switch for a problem free device but in my case I'm still waiting for another exchange...

According to rumors a software fix can solve it and that looks possible.

However I don't trust HTC so I play it safe by switching devices until getting a proper one.
[HTC One X] freemini:
I just noticed my MBP 2011 flickers on a game page in Steam. It's quite fast but I noticed it instantly. I'm guessing this is how the HOX does too, it is visible on my iPhone's camera but you can't see it as easily.