This is more robust than checking for XRandR output names. Signed-off-by: Simon Ser <contact@emersion.fr> References: https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/954 Reviewed-by: Michel Dänzer <mdaenzer@redhat.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17790>