grep . /sys/class/drm/*/enabled
/sys/class/drm/card0-LVDS-1/enabled:enabled /sys/class/drm/card0-VGA-1/enabled:enabled
grep . /sys/class/ drm/*/enabled
/sys/ class/drm/ card0-LVDS- 1/enabled: enabled class/drm/ card0-VGA- 1/enabled: enabled
/sys/