From e37f14a5fb85522f3bbf88ece6134c4e610ed598 Mon Sep 17 00:00:00 2001 From: Kirill Tkhai Date: Fri, 18 Oct 2013 15:56:44 +0400 Subject: [PATCH] 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 Signed-off-by: Rafael J. Wysocki --- drivers/acpi/video.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index d020df5a732a..38c3a28d6392 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -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"), + }, + }, {} }; -- 2.39.5