If chrome is in fullscreen mode and im logged into wayland, then it flickers with a checker patterned corruption, when playing videos or taking a alt+screenshot.
prints: [10213:10213:0712/172530.549503:ERROR:gl_surface_presentation_helper.cc(260)] GetVSyncParametersIfAvailable() failed for 10 times!
Lyude says she wants to look at this so assigning to her.
It's some sort of corruption at swap buffers time. The back buffer is getting garbled behind chrome's back and then it stays corrupted until surface resize.
might end up being a kernel issue or mutter issue.
Hi! There wasn't much info added to this bug since most of the discussion around it happened at the Red Hat office. Some more details:
The easiest way to reproduce this seems to be:
- Install chromium
- Play some video. Personally, I recommend https://www.youtube.com/watch?v=BqnG_Ei35JE
- Put the video into full screen
- Take a snapshot of *only the current window* using alt + print screen
- Shield your eyes and prepare for flicker. See an example using a high speed camera at https://people.freedesktop.org/~lyudess/archive/07-15-2019/VID_20190712_172307.mp4
I've confirmed this bug is present on both the HD 620 (using a ThinkPad T480s) and the HD 530 (using a ThinkPad P50's integrated GPU). It seems to be Intel specific, as I can't reproduce it elsewhere. I've also tested the latest mesa version (as of writing, 0ba508d7a3b6a006b5b8db1e865d33efc8d0abd5) and a drm-tip kernel (bbf4d95db6732b16547dc9d849701ccf4189aa0d) and have confirmed the issue is still present there. Will open an upstream bug for this in a moment.
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