[3.5.y.z,extended,stable] Patch "ACPI / video: ignore BIOS initial backlight value for HP" has been added to staging queue

Message ID 1371042930-11136-1-git-send-email-luis.henriques@canonical.com
State New
Headers show

Commit Message

Luis Henriques June 12, 2013, 1:15 p.m.
This is a note to let you know that I have just added a patch titled

    ACPI / video: ignore BIOS initial backlight value for HP

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see



From 7fb379f5abc14cb5117d767d20b804434a1646ca Mon Sep 17 00:00:00 2001
From: Ash Willis <ashwillis.kernel@gmail.com>
Date: Wed, 29 May 2013 01:27:59 +0000
Subject: [PATCH] ACPI / video: ignore BIOS initial backlight value for HP
 Pavilion g6

commit 780a6ec640a3fed671fc2c40e4dd30c03eca3ac3 upstream.

This patch addresses kernel bug 56661. BIOS reports an incorrect
backlight value, causing the driver to switch off the backlight
completely during startup. This patch ignores the incorrect value from

References: https://bugzilla.kernel.org/show_bug.cgi?id=56661
Signed-off-by: Ash Willis <ashwillis@programmer.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
 drivers/acpi/video.c | 8 ++++++++
 1 file changed, 8 insertions(+)



diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index a4d9f5d..403283d 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -457,6 +457,14 @@  static struct dmi_system_id video_dmi_table[] __initdata = {
 	 .callback = video_ignore_initial_backlight,
+	 .ident = "HP Pavilion g6 Notebook PC",
+	 .matches = {
+		 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
+		 DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion g6 Notebook PC"),
+		},
+	},
+	{
+	 .callback = video_ignore_initial_backlight,
 	 .ident = "HP 1000 Notebook PC",
 	 .matches = {
 		DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),