Sadly I'm still getting vc4 freezes in atomic KMS functions even when
GNOME has been told not to use it:
Oct 08 16:16:31 pi400 gnome-shell[968]: Mode setting implementation for
'/dev/dri/card1' (vc4) forced (non-atomic).
...
Oct 08 16:24:38 pi400 kernel: [drm:drm_crtc_commit_wait [drm]] *ERROR*
flip_done timed out
Oct 08 16:24:38 pi400 kernel: [drm:drm_atomic_helper_wait_for_dependencies
[drm_kms_helper]] *ERROR* [CRTC:76:crtc-3] commit wait timed out
Oct 08 16:24:48 pi400 kernel: [drm:drm_crtc_commit_wait [drm]] *ERROR*
flip_done timed out
Oct 08 16:24:48 pi400 kernel: [drm:drm_atomic_helper_wait_for_dependencies
[drm_kms_helper]] *ERROR* [PLANE:70:plane-3] commit wait timed out
I guess the vc4 kernel is trying to implement non-atomic KMS using a
buggy atomic implementation. :(
** Changed in: mutter (Ubuntu Impish)
Status: In Progress => Invalid
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https://bugs.launchpad.net/bugs/1944397
Title:
HDMI does not display anything with Impish RPi desktop image
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