Ubuntu
linux package

  1. Bug #1098216
  2. Comment #137

Comment 137 for bug 1098216

Revision history for this message
In , peter.weber (peter.weber-linux-kernel-bugs) wrote :

Adding following parameters to boot command line seems to be a mostly working workaround:

# first switches of thinkpad_acpi, seconds switches of acpi_video
thinkpad-acpi.brightness_enable=0 acpi_backlight=vendor

* Fn+BrightnessDown, Fn+BrighnessUp works
* GNOME Power-Widget displays change of value through Fn-Keys
* GNOME > System Settings > Brighness works
* ls -l /sys/class/backlight only lists intel_backlight (not acpi or thinkpad)

Only automatic display-dimming through GNOME seems not to work.