Even as root got the same error. Did chmod 666 /dev/dri/card0 (only /dev/dri/card0 is present) and tried again as normal user and as root. In all the cases same error appears.
Even as root got the same error. Did chmod 666 /dev/dri/card0 (only /dev/dri/card0 is present) and tried again as normal user and as root. In all the cases same error appears.