GitLab

Description

• Fedora 35
• mesa 21.3.1
• mutter from branch gnome-41 current with https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2067
• NVIDIA proprietary driver 495.44

mutter fails to start with Failed to allocate onscreen framebuffer for /dev/dri/card0: Failed to allocate surface

This is a regression in mesa 21.3.1, was working fine with mesa 21.2.5.

I ran a git bisect which gives:

d50b47a14e94751cd59ad5892ad795d508557f0 is the first bad commit
commit ad50b47a14e94751cd59ad5892ad795d508557f0
Author: Simon Ser <contact@emersion.fr>
Date:   Fri Aug 27 15:03:39 2021 +0200

    gbm: assume USE_SCANOUT in create_with_modifiers
    
    gbm_{bo,surface}_create_with_modifiers doesn't allow callers to
    pass usage flags. Assume USE_SCANOUT since this is what most
    callers want.
    
    Bump the GBM ABI version so that other backends can discover when
    the usage flags can be used.
    
    Signed-off-by: Simon Ser <contact@emersion.fr>
    Reviewed-by: James Jones <jajones@nvidia.com>
    Reviewed-by: Daniel Stone <daniels@collabora.com>
    Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3197>

 src/gbm/main/gbm.c             |  5 +++--
 src/gbm/main/gbm_abi_check.c   |  9 +++++++--
 src/gbm/main/gbm_backend_abi.h | 10 +++++++++-
 3 files changed, 19 insertions(+), 5 deletions(-)

cc: @emersion, @cubanismo