Database Users

LCD problem?

Hello,
I've just got my replacement phone (the previous one had mechanical problems) and the display seems a bit strange with this new device.
There are visible banding effects in color gradients, (web pages, pictures) I know the Lcd has only 65K colors, but I don't remember those bands being so strong on my previous device.
Could you fellow G1 owners check this on your device please? I am in Hungary, Europe and I don't know any other G1 owners here (you know it's not available here, actually mine is an ADP1).
It's easy to check, the effect is very visible on http://www.google.com/news (Google international news mobile site) in the Android browser. It's slightly visible in the dark blue title bar, more in the light blue bar below and very strongly in the "Sections" bar far below.
Please check it and tell me what you have found...
Thanks,
Peter

I see the same issues with google/news. I think it has to do with google's site and/or the g1's browser. Here's a few high quality jpeg gradients Black-White, RainBow and Blue-Red. Unfortunately google compresses them and they look like junk online. So, here's a .zip of the three gradients your can download right to your phone and view with Astro, or extract to pc etc. They should look fairly smooth on the g1, better on pc tho..
use there gradients for w/e you choose.

Hello sonikamd,
Thanks for your help! Interestingly your test pictures look better (smoother) in the standard picture viewer app than in Astro's viewer. Can you confirm that?
Also how old is your device? It looks like that mine (the replacement device) is very old, it's serial number is lower than what I have sent back (purchased in december).
Thanks,
Peter

Just one last quick question: on the incoming call screen there are strange lines appear, do anyone see those on the G1 or it is just me?
Click on the picture to see what I mean.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
No, I am not crazy - I am a graphics artist and really sensitive to things like that.
Thanks,
p

nope... [filling characters]

Hi lilithpro,
Thanks for the image, however you won't see the effect on a screencapture (like you attached). I made the pic in Photoshop (from a captured emulator screen) to show the effect - I exaggerated the effect in the pic a little.
You should check your device's lcd during an incoming call to see it. I think it is something to do with the lcd panel. Today I managed to check an other G1 and it showed that effect, too.
So it seems it is not my ADP1's problem.

[Q] Is Arc display really has 16M Colours?

I'm starting to wonder whether Arc is really having it's display set to show 16M colour!! The reason for this is the, I notice gradient/unpolished in few places; example in the "Tweetcast" application.

It;s the application not the screen

Of course it does:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
What you see is related to that app

I can't be sure, i was counting them but the phone rang and distracted me at 14,283,102. So now i'm having to start again.
1.... 2.... 3.... 4....

Thanks everyone for the reply and everyone pointing to the application!
Is there any application that can be used to test this? (Just to make sure that I don't have a faulty screen)

What you have to bear in mind is that an image is only as good as its weakest link. Artifacts and errors can be introduced by the camera, the compression scheme (if you see banding in any jpeg image, it could easily be caused by compression algorithms), the screen driver software (IIRC, android v1.5 only supported 64k colours, regardless of screen quality) and, finally, the screen itself.
A good test for computer LCD monitors is here: http://www.lagom.nl/lcd-test/. Even though it's designed for PC monitors some of the tests are valid for mobile phone screens (but note that in lot of the tests a mobile phone web browser will perform page scaling and will shrink/expand the images, messing up the results).
However, the Gradient (banding) test should give valid results at any zoom level. If your display is 16M colours, you should get a totally smooth gradient (it does on mine, it's actually better than my computer monitor). Make sure the screen is clean, mine was covered in smeary fingerprints which didnt help at all

daveybaby said:
What you have to bear in mind is that an image is only as good as its weakest link. Artifacts and errors can be introduced by the camera, the compression scheme (if you see banding in any jpeg image, it could easily be caused by compression algorithms), the screen driver software (IIRC, android v1.5 only supported 64k colours, regardless of screen quality) and, finally, the screen itself.
A good test for computer LCD monitors is here: http://www.lagom.nl/lcd-test/. Even though it's designed for PC monitors some of the tests are valid for mobile phone screens (but note that in lot of the tests a mobile phone web browser will perform page scaling and will shrink/expand the images, messing up the results).
However, the Gradient (banding) test should give valid results at any zoom level. If your display is 16M colours, you should get a totally smooth gradient (it does on mine, it's actually better than my computer monitor). Make sure the screen is clean, mine was covered in smeary fingerprints which didnt help at all
Click to expand...
Click to collapse
Arc beat my Streak easily which beat my Dell laptop easily..lol

Well, since everyone says it could be related to application and not the screen or driver itself, I'm convinced. Let me start using and see whether how many applications are like this and might update this topic lately.
Thanks everyone for your replies.

[Q] White Lines missing from screen, and crazy screen result all CM ROMS

I have major display problems on any CM based ROM with crazy jumping and unreadable screens.
I have tracked the problem to the display of white lines. A screen shot is OK, so its hardware - either the Adreno200 GPU or my screen.
Problem Description:
Lines (pixel lines that is) containing a significant amount of white randomly do not display. As a result the display "scrunches up" with a gap from the bottom. Any background to the app, and sometimes the desktop will display in the gap at the bottom as it has not been written over.
Note the "bottom" in this context is the button end of the phone, thus rotating the phone leads to different screen areas being affected.
Affects all the CM ROMS I have tried, with the latest CM10.x ones being the worst. There was no issue with the stock LG ROM.
Images:
1.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Coloured triangles produced by "OpenGL Demos" app are OK
2.
White Triangles loose lines and scrunge up. I used the Demo prog as the code is the same, just a color change!
3.
Screen shot, so not a software issue. What they should look like!
5.
Google Play. Unusable. Note hte white background is OK. It just seems to be items that are layered onto the screen.
Apps with black backgrounds and grey/coloured text are fine.
What have I tried?
I have tried messing with OpenGL HW settings with no effect.
I have messed with screen brightness.
I have tried various ROMS.
I tried moving processing from the GPU to the CPU, but that completely messed the display, and I had to re-install the ROM
I haven't tried altering the refresh rate from 60hz, but cannot find if this is possible. I think its a refresh problem, but not sure. Its almost as if the white lines are sent faster than the screen can handle and they are missed during the display phase.
The other theory is that the GPU does some special acceleration cleverness for white areas the screen can't handle.
Any ideas?
Any Adreno200 settings I could try?
Any bridges nearby I could jump off?
p.s. Photos taken from the Optimus Nexus Me port here:
http://forum.xda-developers.com/show....php?t=2397696 not that it matters which ROM it is.

Obviously, it's not "soft" problem, it's a "hard" one, replace the screen.

LeoPosas said:
Obviously, it's not "soft" problem, it's a "hard" one, replace the screen.
Click to expand...
Click to collapse
That was kind of where I was heading, but I was concerned that an aftermarket screen would have the same problem. This screen was fine with the stock ROM, so was hoping for a magic setting change.
Thanks for the response. Really wanted to run your Zoe ROM, but that was worse.

To be honest, I wouldn't replace the screen on this phone anymore. It isn't worth it anymore.
Sent from my Galaxy Nexus using XDA Premium 4 mobile app

Black Stripe on Screen

So my galaxy s5 has been working great for the past month or so that I've owned it. I have rooted it and done some adjustments with the xposed installer, but I haven't flashed any custom roms yet or anything. So then today out of nowhere, this little stripe appears on my screen:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
So that's annoying. I took a screenshot on my phone and then moved it to see if it was the actual screen or just the picture being displayed on it. However, the screenshot shows no black stripe when zoomed and moved around so that the would be screenshotted black stripe wouldn't be on top of the actual black stripe. Then I restarted my phone, still there. I booted into recovery mode to see if it still happened when not opening the actual normal use, it was still there. Then finally I tried pulling out the battery and putting it back in, still there. I'm a little frustrated and a bit scared that I've already voided my warranty by rooting it and disabling knox. Also, the line turns sort of white when against a dark background and goes away when the screen is off. It's not the worst obstruction in the world, but the phone is less than a month old, so obviously I want it to be perfect. Any help that can be offered is appreciated.
I'm on verizon if that makes any difference.
Edit: I haven't dropped it, exposed it to heat or magnets or anything of the sort

It's unfortunate that you didn't post a full size, full resolution image. We can't make out any fine detail in your reduced resolution image. It would also have been good to know if the band is invariant in size as you make screen adjustments or display primary colours on screen. Or if it shows up in downloaded photos?
We are of course seeking a pattern or otherwise trying to narrow down the potential causes. Since we don't have much to go on yet, we can only guess, it looks to be a hardware defect. But there isn't enough information to be certain.
It would still be useful to look for a pattern in whether the band varies at all with different colours and brightnesses on screen. You can also use the dialer code *#08# and display red only, blue only, white only, black only, etc screens to get a better sense of which pixels are apparently contributing to the band.
Also try backing up the phone (to save your user files or installed apps), then revert to 100% stock firmware temporarily, followed by a factory data reset. If the problem persists it is all but certain to be a hardware issue. Claim it under warranty then if you can.
.

[GUIDE] Remove ghosting/image retention from your screen

As you all might now, many models of the LGG5 suffer from image retention. There are some ways to fix it but wanted to create a thread which should probably get pinned for easy access.
Solution is simple, image retention is created by some pixels of our screen (normally at the corners of our device) when they are forced to brighten too much, we need to darken slightly the screen, lowering brightness does not help as pixels are still fully opened and this is what causes image retention. (I'm not too technical about this but I hope you understand what I'm saying)
An excellent app to fix is is CF.Lumen by chainfire. Rooted or not, it will still work.
https://play.google.com/store/apps/details?id=eu.chainfire.lumen
Set custom filter and apply a darkening one to a value that fixes your problem. My issue got fixed with a value between 5-7%, I had a severe problem.
The only price you pay for this fix is around 5% max brightness which I certainly don't notice. Colors remain the same.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
And everything fixed, press and hold on the notification bar and disable it if it annoys you.

100 percent working for me.
jaggyjags said:
As you all might now, many models of the LGG5 suffer from image retention. There are some ways to fix it but wanted to create a thread which should probably get pinned for easy access.
Solution is simple, image retention is created by some pixels of our screen (normally at the corners of our device) when they are forced to brighten too much, we need to darken slightly the screen, lowering brightness does not help as pixels are still fully opened and this is what causes image retention. (I'm not too technical about this but I hope you understand what I'm saying)
An excellent app to fix is is CF.Lumen by chainfire. Rooted or not, it will still work.
https://play.google.com/store/apps/details?id=eu.chainfire.lumen
Set custom filter and apply a darkening one to a value that fixes your problem. My issue got fixed with a value between 5-7%, I had a severe problem.
The only price you pay for this fix is around 5% max brightness which I certainly don't notice. Colors remain the same.
View attachment 4556982
View attachment 4556983
View attachment 4556984
And everything fixed, press and hold on the notification bar and disable it if it annoys you.
Click to expand...
Click to collapse
thanks for the explanation and detailed process, after doing this there is no image retention showing up again, and i am using blue light filter app having setting of 1800K at intensity of 2% and screen dim level to 6%.

works