[PATCH 0/1][Raring SRU] Work around broken ACPI backlight on ThinkPad T430

[Seth Forshee]

== Raring SRU Justification ==

Impact: A bug in the ACPI tables causes the ACPI backlight interface to
fail to apply brightness changes with kernels claiming Windows 8
compatibility. This interface is generally the first choice of
userspace, and users are unable to adjust the brightness using GUI
tools.

Fix: Quirk the affected model to disable Windows 8 compatibility. This
causes the AML to fall back to the pre-Win8 behavior, which functions
correctly.

Test case: Verify on an affected machine. Verified on LP #1183856.


Seth Forshee (1):
  UBUNTU: SAUCE: Fix broken ACPI backlight on ThinkPad T430

 drivers/acpi/blacklist.c | 8 ++++++++
 1 file changed, 8 insertions(+)