Commit e37f14a5 authored Oct 18, 2013 by Kirill Tkhai Committed by Rafael J. Wysocki Oct 25, 2013

ACPI / video: Ignore BIOS initial backlight value for HP 250 G1

On HP 250 G1 laptops, BIOS reports minimum backlight on boot and
causes backlight to dim completely. This ignores the initial backlight
values and set to max brightness.

References: https://bugzilla.kernel.org/show_bug.cgi?id=63111


Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent a8d52f44

drivers/acpi/video.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -504,6 +504,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion m4 Notebook PC"),
		},
		},
		{
		.callback = video_ignore_initial_backlight,
		.ident = "HP 250 G1",
		.matches = {
		DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
		DMI_MATCH(DMI_PRODUCT_NAME, "HP 250 G1 Notebook PC"),
		},
		},
		{}
		};