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Potomac

Member

Registered: 2011-12-25

Posts: 528

[mesa] a random white pixel in the top-left corner since mesa 11.2.0

Hello,

since the upgrade of mesa ( 11.1.2-1 -> 11.2.0-1) I notice a weird graphic bug,

when the bug occurs ( I use plasma 5 ) what I see is a permanent white pixel on coordinates "0,0", the first pixel on the top-left corner of the screen,

but if I immediatly switch to a console ( ctrl-alt-f2 ) and then go back to the X session then it fixes the corruption, no permanent white pixel on coordinates "0,0",

the bug can occur randomly, I thought it was a problem with my LCD screen ( a defect or a "hot pixel" ), but it's not a hardware problem, it's a software problem and I think the culprit is mesa 11.2.0-1,

I have a radeon HD4650 pcie and I use the radeon driver, maybe the code in mesa 11.2.0-1 related to amd cards and openGL has a problem,

this bug seems similar to an old bug :

https://bugs.launchpad.net/ubuntu/+sour … bug/944701

I want to know if someone else has noticed this bug ?

thanks

ien

Member

Registered: 2014-08-06

Posts: 16

Re: [mesa] a random white pixel in the top-left corner since mesa 11.2.0

I had that and I also thought it was problem with the monitor.
I think it was 3 days ago when I first saw the pixel and that is same day when I updated mesa.
I'm running nvidia gtx760 with proprietary drivers.

jsoy9pQbYVNu5nfU

Member

Registered: 2013-04-19

Posts: 108

Re: [mesa] a random white pixel in the top-left corner since mesa 11.2.0

I also had single, white 1px (exactly 1px) in the top-left screen corner … until I closed Firefox (45.x, from the repos) and switched to Nightly (via firefox-nightly-bin from the AUR), which doesn't cause this issue.  The dot was not an overlay though; whenever I moved a non-window-border pixel area or a fullscreen window over it, it disappeared.

I am using dwm and no compositor. Intel HD 4400 graphics. I can't test or try to reproduce for the time being because I currently have pinned gtk3 to 3.18, and the repository fox is compiled against 3.20.

To sum up, it might not strictly be a Mesa but a gtk3/xul problem, or both.

Last edited by jsoy9pQbYVNu5nfU (2016-04-13 12:46:05)

Grelek

Member

Registered: 2016-02-05

Posts: 13

Re: [mesa] a random white pixel in the top-left corner since mesa 11.2.0

Same problem here. The white pixel doesn't show up always. I also though my monitor just got "dead pixel", but then I noticed it started happening after mesa update and it appears randomly.

I use only i3 without DE on HP Probook 4740s.

Hydranix

Member

Registered: 2013-02-10

Posts: 55

Re: [mesa] a random white pixel in the top-left corner since mesa 11.2.0

No issue here, but one of you should consider filing a bug report if you're sure it's mesa.

https://bugs.freedesktop.org/enter_bug.cgi

Potomac

Member

Registered: 2011-12-25

Posts: 528

Re: [mesa] a random white pixel in the top-left corner since mesa 11.2.0

this bug seems solved with the upgrade of firefox package ( 45.0.2-1 )

it was a problem between firefox and the last version of gtk3