This should be fixed in the upstream 3.19 kernel by this patch

author Aaron Lu
committer Rafael J. Wysocki
commit 7d0b93499f4879ddbc75d594f4ea216ba964f78e (patch)
tree 7c65587b844e6709d4301599e67505c9335de1cb
parent 97bf6af1f928216fd6c5a66e8a57bfa95a659672 (diff)

ACPI / video: Add some Samsung models to disable_native_backlight list

Several Samsung laptop models (SAMSUNG 870Z5E/880Z5E/680Z5E and SAMSUNG
370R4E/370R4V/370R5E/3570RE/370R5V) do not have a working native
backlight control interface so restore their acpi_videoX interface.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=84221
Link: https://bugzilla.kernel.org/show_bug.cgi?id=84651
For SAMSUNG 870Z5E/880Z5E/680Z5E:
Reported-and-tested-by: Brent Saner
Reported-by: Vitaliy Filippov
Reported-by: Laszlo KREKACS
For SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V:
Reported-by: Vladimir Perepechin
Cc: 3.17+ <sta...@vger.kernel.org> # 3.17+
Signed-off-by: Aaron Lu
Signed-off-by: Rafael J. Wysocki

A PPA of the 3.19-rc3 kernel is available at http://kernel.ubuntu.com
/~kernel-ppa/mainline/ and instructions on how to install and uninstall
it are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds

** Bug watch added: Linux Kernel Bug Tracker #84221
   http://bugzilla.kernel.org/show_bug.cgi?id=84221

** Bug watch added: Linux Kernel Bug Tracker #84651
   http://bugzilla.kernel.org/show_bug.cgi?id=84651

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https://bugs.launchpad.net/bugs/1380824

Title:
  Backlight not working on Samsung ATIV 8 laptop

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