ACPI: video: Force backlight native for Clevo NL5xRU and NL5xNU

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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>

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Werner Sembach 2022-03-15 20:02:28 +01:00 • committed by Rafael J. Wysocki

parent 09688c0166

commit c844d22fe0

1 changed files with 75 additions and 0 deletions

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drivers/acpi/video_detect.c

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