From 4b4b3b20e8e645be103cf737827372f86479867a Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 22 Dec 2015 19:09:52 +0100 Subject: ACPI / video: Add quirks for the Dell Vostro V131 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The Dell Vostro V131 has an especially broken acpi-video implementation. The backlight control bits work, but when the brightness is changed via the acpi-video interface the backlight flickers annoyingly before settling at the new brightness, switching to using the native interface fixes the flickering so add a quirk for this (the vendor interface has the same problem). Brightness keypresses reported through the acpi-video-bus are also broken, they get reported one event delayed, so if you press the brightness-up hotkey on the keyboard nothing happens, then if you press brightness-down, the previous brightness-up event gets reported. Since the keypresses are also reported via wmi (if active) and via atkbd (when wmi is not active) add a quirk to simply filter out the delayed (broken) events. Reported-and-tested-by: Michał Kępień Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/acpi/video_detect.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/acpi/video_detect.c') diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index daaf1c4e1e0f..8fe2682380e9 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -279,6 +279,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro12,1"), }, }, + { + .callback = video_detect_force_native, + .ident = "Dell Vostro V131", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"), + }, + }, { }, }; -- cgit v1.2.3