This is a note to let you know that I've just added the patch titled ACPI / video: Disable native_backlight on HP ENVY 15 Notebook PC to the 3.16-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: acpi-video-disable-native_backlight-on-hp-envy-15-notebook-pc.patch and it can be found in the queue-3.16 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 84c34858a85ecf9dabd72847d860c7d3fb7536e7 Mon Sep 17 00:00:00 2001 From: Hans de Goede <hdegoede@xxxxxxxxxx> Date: Thu, 28 Aug 2014 10:20:47 +0200 Subject: ACPI / video: Disable native_backlight on HP ENVY 15 Notebook PC From: Hans de Goede <hdegoede@xxxxxxxxxx> commit 84c34858a85ecf9dabd72847d860c7d3fb7536e7 upstream. Link: https://bugs.freedesktop.org/show_bug.cgi?id=81515 Reported-and-tested-by: Hohahiu <rakothedin@xxxxxxxxx> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/acpi/video.c | 11 +++++++++++ 1 file changed, 11 insertions(+) --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -675,6 +675,17 @@ static struct dmi_system_id video_dmi_ta DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T520"), }, }, + + /* The native backlight controls do not work on some older machines */ + { + /* https://bugs.freedesktop.org/show_bug.cgi?id=81515 */ + .callback = video_disable_native_backlight, + .ident = "HP ENVY 15 Notebook", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY 15 Notebook PC"), + }, + }, {} }; Patches currently in stable-queue which might be from hdegoede@xxxxxxxxxx are queue-3.16/acpi-video-disable-native_backlight-on-hp-envy-15-notebook-pc.patch queue-3.16/acpi-video-fix-use_native_backlight-selection-logic.patch queue-3.16/acpi-video-add-a-disable_native_backlight-quirk.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html