nikoh@nikoh-desktop:~$ retroarch
[CDROM] Could not open /dev/sg0, please check permissions.
X Error of failed request:  BadName (named color or font does not exist)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  16 (RRCreateMode)
  Serial number of failed request:  49
  Current serial number in output stream:  49
xrandr: cannot find output ""
warning: output  not found; ignoring
xrandr: cannot find output ""
xrandr: cannot find mode ""