Commit 4ef366c5 authored May 06, 2013 by Alex Hung Committed by Rafael J. Wysocki May 12, 2013

ACPI video: ignore BIOS initial backlight value for HP 1000

On HP 1000 lapops, 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://bugs.launchpad.net/bugs/1167760


Signed-off-by: Alex Hung <alex.hung@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent 36200af8

drivers/acpi/video.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -456,6 +456,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"),
		},
		},
		{
		.callback = video_ignore_initial_backlight,
		.ident = "HP 1000 Notebook PC",
		.matches = {
		DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
		DMI_MATCH(DMI_PRODUCT_NAME, "HP 1000 Notebook PC"),
		},
		},
		{}
		};