Ubuntu
linux package

  1. Bug #1295141
  2. Comment #7

Comment 7 for bug 1295141

Revision history for this message
Lonnie Lee Best (launchpad-startport) wrote :

The echo's Aaron Lu suggested did indeed adjust the brightness after trying them with root shell:

user@Qosmio-X75-A:/sys/class/backlight/intel_backlight$ sudo -s
[sudo] password for user:
root@Qosmio-X75-A:/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight# ls
actual_brightness brightness max_brightness subsystem uevent
bl_power device power type
root@Qosmio-X75-A:/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight# cat max_brightness
5273
root@Qosmio-X75-A:/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight# echo 400 > brightness
root@Qosmio-X75-A:/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight# echo 4000 > brightness
root@Qosmio-X75-A:/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight#

You'll also notice that I've attached photos of the keyboard (in post#6), as I couldn't imagine how you'd implement the proper mappings without seeing the symbols shown on the keys themselves.