pablo@pablo-laptop:~$ sudo grep -r . /proc/acpi/video [sudo] password for pablo: /proc/acpi/video/GFX0/DD05/EDID: /proc/acpi/video/GFX0/DD05/brightness: /proc/acpi/video/GFX0/DD05/state:state: 0x1d /proc/acpi/video/GFX0/DD05/state:query: 0x00 /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/DD04/EDID: /proc/acpi/video/GFX0/DD04/brightness: /proc/acpi/video/GFX0/DD04/state:state: 0x1d /proc/acpi/video/GFX0/DD04/state:query: 0x00 /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: no /proc/acpi/video/GFX0/DD03/EDID: /proc/acpi/video/GFX0/DD03/brightness:levels: 10 20 30 40 50 60 70 80 90 100 /proc/acpi/video/GFX0/DD03/brightness:current: 60 /proc/acpi/video/GFX0/DD03/state:state: 0x1f /proc/acpi/video/GFX0/DD03/state:query: 0x01 /proc/acpi/video/GFX0/DD03/info:device_id: 0x0410 /proc/acpi/video/GFX0/DD03/info:type: LCD /proc/acpi/video/GFX0/DD03/info:known by bios: yes /proc/acpi/video/GFX0/DD02/EDID: /proc/acpi/video/GFX0/DD02/brightness: /proc/acpi/video/GFX0/DD02/state:state: 0x1d /proc/acpi/video/GFX0/DD02/state:query: 0x00 /proc/acpi/video/GFX0/DD02/info:device_id: 0x0320 /proc/acpi/video/GFX0/DD02/info:type: DVI /proc/acpi/video/GFX0/DD02/info:known by bios: yes /proc/acpi/video/GFX0/DD01/EDID: /proc/acpi/video/GFX0/DD01/brightness: /proc/acpi/video/GFX0/DD01/state:state: 0x1d /proc/acpi/video/GFX0/DD01/state:query: 0x00 /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/DOS:DOS setting: <7> /proc/acpi/video/GFX0/POST: /proc/acpi/video/GFX0/POST_info: /proc/acpi/video/GFX0/ROM: /proc/acpi/video/GFX0/info:Switching heads: yes /proc/acpi/video/GFX0/info:Video ROM: no /proc/acpi/video/GFX0/info:Device to be POSTed on boot: no