Commit 771d09b3 authored Mar 04, 2013 by Gustavo Maciel Dias Vieira Committed by Rafael J. Wysocki Mar 24, 2013

ACPI video: ignore BIOS backlight value for HP dm4



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>

parent 8bb96604

drivers/acpi/video.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -447,6 +447,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
		DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"),
		},
		},
		{
		.callback = video_ignore_initial_backlight,
		.ident = "HP Pavilion dm4",
		.matches = {
		DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"),
		},
		},
		{}
		};