Ubuntu
linux-lts-raring package

  1. Bug #1231305
  2. Comment #27

Comment 27 for bug 1231305

Revision history for this message
Po-Hsu Lin (cypressyew) wrote : Re: Unable to adjust screenbrightness with Intel Haswell-ULT Integrated Graphics Controller [8086:0a26]

Disabling the ACPI backlight driver with "acpi_backlight=vendor" could make it work, but it also cause the touchpad and keyboard stop working.

Also verified with the latest mainline kernel 3.12rc2, the brightness level indicator could be changed from 0 - Max correctly by pressing the brightness keys, but the brightness still not changing.