root@RL80:/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-VGA-1# ls -lh
total 0
lrwxrwxrwx 1 root root    0 Mar  2 07:58 device -> ../../card0
-r--r--r-- 1 root root 4.0K Mar  2 07:58 dpms
-r--r--r-- 1 root root    0 Mar  2 07:55 edid
-r--r--r-- 1 root root 4.0K Mar  2 07:58 enabled
-r--r--r-- 1 root root 4.0K Mar  2 07:58 modes
drwxr-xr-x 2 root root    0 Mar  2 07:54 power
-r--r--r-- 1 root root 4.0K Mar  2 07:58 status
lrwxrwxrwx 1 root root    0 Feb 28 13:12 subsystem -> ../../../../../../class/drm
-rw-r--r-- 1 root root 4.0K Feb 28 13:12 uevent