Ubuntu
gnome-power-manager package

  1. Bug #1720438
  2. Comment #8

Comment 8 for bug 1720438

Revision history for this message
Simone Bordet (simone-bordet) wrote :

I tried also: sudo su -c 'echo 10 > /sys/class/backlight/acpi_video0/brightness'.

Pressing the Fn keys brings up the OSD brightness control, which reflects the value of the /sys/class/backlight/acpi_video0/brightness file (and viceversa), but the actual screen brightness does not change.