From: Greg Kroah-Hartman gregkh@linuxfoundation.org
From: Jasper St. Pierre jstpierre@mecheye.net
[ Upstream commit 25417185e9b5ff90746d50769d2a3fcd1629e254 ]
The GIGABYTE GB-BXBT-2807 is a mini-PC which uses off the shelf components, like an Intel GPU which is meant for mobile systems. As such, it, by default, has a backlight controller exposed.
Unfortunately, the backlight controller only confuses userspace, which sees the existence of a backlight device node and has the unrealistic belief that there is actually a backlight there!
Add a DMI quirk to force the backlight off on this system.
Signed-off-by: Jasper St. Pierre jstpierre@mecheye.net Reviewed-by: Chris Chiu chiu@endlessos.org Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/acpi/video_detect.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 4f5463b2a217..811d298637cb 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -140,6 +140,13 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_vendor, + .ident = "GIGABYTE GB-BXBT-2807", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), + DMI_MATCH(DMI_PRODUCT_NAME, "GB-BXBT-2807"), + }, + }, + { .ident = "Sony VPCEH3U1E", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),