When starting full screen OpenGL applications, only a black screen is shown. Windowed applications are fine.
My graphics adapter:
01:00.0 VGA compatible controller: NVIDIA Corporation G96GLM [Quadro FX 770M] (rev a1)
I've bisected the issue to this commit: 144a7999d6334be5237d5926ab19c56bc24d0204
Also of note: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=905780
Created attachment 141039 [details]
DRM logging with drm.debug=30
The thing I find interesting is the line
[drm:drm_atomic_set_mode_for_crtc [drm]] Set [MODE:] for CRTC state 0000000082c49623
where the new mode name should probably be shown, but isn't.
Created attachment 141143 [details]
Log of commit 144a799 with drm.debug=30
Created attachment 141144 [details]
Log of commit 4a97a3d with drm.debug=30
I don't know what to look for, but these seem to differ:
From 4a97a3d log:
kernel: nouveau 0000:01:00.0: DRM: commit 0 0
kernel: nouveau 0000:01:00.0: DRM: head-0: clr 0000 (set 0000)
kernel: nouveau 0000:01:00.0: DRM: head-0: set 0000 (clr 0000)
From corresponding position in 144a799 log:
kernel: nouveau 0000:01:00.0: DRM: commit 1 0
kernel: nouveau 0000:01:00.0: DRM: head-0: clr 0001 (set 000d)
kernel: nouveau 0000:01:00.0: DRM: head-0: set 000d (clr 0001)
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