Werner Sembach 95471dcb7d ACPI: video: Force backlight native for Clevo NL5xRU and NL5xNU
commit c844d22fe0c0b37dc809adbdde6ceb6462c43acf upstream.

Clevo NL5xRU and NL5xNU/TUXEDO Aura 15 Gen1 and Gen2 have both a working
native and video interface. However the default detection mechanism first
registers the video interface before unregistering it again and switching
to the native interface during boot. This results in a dangling SBIOS
request for backlight change for some reason, causing the backlight to
switch to ~2% once per boot on the first power cord connect or disconnect
event. Setting the native interface explicitly circumvents this buggy
behaviour by avoiding the unregistering process.

Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-28 08:41:44 +02:00
..
2020-03-25 08:06:13 +01:00
2019-05-14 19:17:53 +02:00
2018-06-05 10:08:27 -07:00
2020-11-22 10:02:26 +01:00
2019-12-17 20:35:05 +01:00
2018-05-02 13:01:08 +02:00
2020-06-30 23:17:15 -04:00