Code:
drmOpenDevice: node name is /dev/dri/card0
Failed to change owner or group for file /dev/dri! 2: No such file or directory
Failed to change owner or group for file /dev/dri/card0! 2: No such file or directory
drmOpenDevice: open result is -1, (No such file or directory)
Failed to change owner or group for file /dev/dri/card0! 2: No such file or directory
drmOpenDevice: open result is -1, (No such file or directory)
drmOpenDevice: Open failed
Problem seems that X looks for drm source in card0 but this node is not created under /dev/dri directory.
Please, show following outputs
# ll /dev/dri
and # glxinfo | grep direct