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ACPI video: ignore BIOS backlight value for HP dm4
authorGustavo Maciel Dias Vieira <gustavo@sagui.org>
Mon, 4 Mar 2013 15:23:37 +0000 (15:23 +0000)
committerBen Hutchings <ben@decadent.org.uk>
Wed, 19 Jun 2013 01:16:51 +0000 (02:16 +0100)
commitc58c2d2597e052789db8fb0864355b3e504d286b
tree8035a4be9577b8848ebaf05c2ca75d8b7af2c692tree | snapshot
parent85b69eb4a04bb04920f7a133f90c6c58ecdf0ec2commit | diff
ACPI video: ignore BIOS backlight value for HP dm4

commit 771d09b3c4c45d4d534a83a68e6331b97fd82e15 upstream.

On a HP Pavilion dm4 laptop the BIOS sets minimum backlight on boot,
completely dimming the screen. Ignore this initial value for this
machine.

Signed-off-by: Gustavo Maciel Dias Vieira <gustavo@sagui.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/acpi/video.c diff | blob | history
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