1216664 - Pretty awesome glitches related to xrender on Linux

Status: RESOLVED FIXED

(Core :: Graphics, defect)

Description

[Nicolas Silva [:nical]]

Attachment: screenshot

I had this once on my new computer. it has a nvidia quadro gpu (GM107GL [Quadro K620] (rev a2)) with nouveau driver.
I just set the computer up today and had this glitch only once, so I don't know if it's anything we can do at the gecko level. Looking at the glitches and how they span across layers I assume this is happening between xrender and the driver.

Scrolling all the way down and back up cleared the artifacts.

Comment 1

[Nicolas Silva [:nical]]

Attachment: Screenshot from 2015-10-27 14-38-59.png

Comment 2

[Nicolas Silva [:nical]]

Attachment: Screenshot from 2015-10-27 15-33-46.png

This one's interesting because the screenshot does not show exactly what I was seeing on the screen: although most of the screen looked like this attachment, I could see parts of my text editor in the bottom right which doesn't appear here.

Comment 3

[Nicolas Silva [:nical]]

I am now using the proprietary nvidia drivers and the problem still occurs, so it's not specific to nouveau. The problem disappears when using cairo's image backend rather than xrender.

Comment 4

[Nicolas Silva [:nical]]

(In reply to Nicolas Silva [:nical] from comment #3)
> I am now using the proprietary nvidia drivers and the problem still occurs,
> so it's not specific to nouveau. The problem disappears when using cairo's
> image backend rather than xrender.

I was actually still on nouveau (I think).

Anyway, xrender for painting is disabled since bug 1180942 landed which fixed this in the process.