/proc/acpi/video/GFX0/DD01/brightness:<not supported>
/proc/acpi/video/GFX0/DD01/EDID:<not supported>
/proc/acpi/video/GFX0/DD01/info:device_id:    0x0100
/proc/acpi/video/GFX0/DD01/info:type:         CRT
/proc/acpi/video/GFX0/DD01/info:known by bios: yes
/proc/acpi/video/GFX0/DD01/state:state:     0x1d
/proc/acpi/video/GFX0/DD01/state:query:     0x00
/proc/acpi/video/GFX0/DD02/brightness:<not supported>
/proc/acpi/video/GFX0/DD02/EDID:<not supported>
/proc/acpi/video/GFX0/DD02/info:device_id:    0x0002
/proc/acpi/video/GFX0/DD02/info:type:         UNKNOWN
/proc/acpi/video/GFX0/DD02/info:known by bios: no
/proc/acpi/video/GFX0/DD02/state:state:     0x1f
/proc/acpi/video/GFX0/DD02/state:query:     0x01
/proc/acpi/video/GFX0/DD03/brightness:levels:  10 20 30 40 50 60 70 80 90 100
/proc/acpi/video/GFX0/DD03/brightness:current: 100
/proc/acpi/video/GFX0/DD03/EDID:<not supported>
/proc/acpi/video/GFX0/DD03/info:device_id:    0x0003
/proc/acpi/video/GFX0/DD03/info:type:         UNKNOWN
/proc/acpi/video/GFX0/DD03/info:known by bios: no
/proc/acpi/video/GFX0/DD03/state:state:     0x0b
/proc/acpi/video/GFX0/DD03/state:query:     0x01
/proc/acpi/video/GFX0/DD04/brightness:<not supported>
/proc/acpi/video/GFX0/DD04/EDID:<not supported>
/proc/acpi/video/GFX0/DD04/info:device_id:    0x0004
/proc/acpi/video/GFX0/DD04/info:type:         UNKNOWN
/proc/acpi/video/GFX0/DD04/info:known by bios: yes
/proc/acpi/video/GFX0/DD04/state:state:     0x1d
/proc/acpi/video/GFX0/DD04/state:query:     0x00
/proc/acpi/video/GFX0/DD05/brightness:<not supported>
/proc/acpi/video/GFX0/DD05/EDID:<not supported>
/proc/acpi/video/GFX0/DD05/info:device_id:    0x0005
/proc/acpi/video/GFX0/DD05/info:type:         UNKNOWN
/proc/acpi/video/GFX0/DD05/info:known by bios: no
/proc/acpi/video/GFX0/DD05/state:state:     0x1d
/proc/acpi/video/GFX0/DD05/state:query:     0x00