Jeremy,
Please check the contents of the following files:
$ cat /sys/devices/virtual/backlight/acpi_video0/brightness $ cat /sys/devices/virtual/backlight/acpi_video0/max_brightness $ cat /sys/devices/virtual/backlight/acpi_video0/actual_brightness
and as root, try to change the value of the 'brightness' file:
# echo 2 > /sys/devices/virtual/backlight/acpi_video0/brightness
Does this change the brightness of your display?
Jeremy,
Please check the contents of the following files:
$ cat /sys/devices/ virtual/ backlight/ acpi_video0/ brightness virtual/ backlight/ acpi_video0/ max_brightness virtual/ backlight/ acpi_video0/ actual_ brightness
$ cat /sys/devices/
$ cat /sys/devices/
and as root, try to change the value of the 'brightness' file:
# echo 2 > /sys/devices/ virtual/ backlight/ acpi_video0/ brightness
Does this change the brightness of your display?