From 61f9738d65094a6b18d22c7beb6bb8c3dc0606b9 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 26 Oct 2015 15:20:46 +0100 Subject: [PATCH] ACPI / video: Add a quirk to force acpi-video backlight on Dell XPS L421X Just like the Dell XPS 15 (L521X) the Dell XPS 14 (L421X) needs to use the acpi-video backlight interface rather then the native one for backlight control to work, add a quirk for this. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1272633 Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- drivers/acpi/video_detect.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 0d3a384b508a..daaf1c4e1e0f 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -232,6 +232,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = { "900X3C/900X3D/900X3E/900X4C/900X4D"), }, }, + { + /* https://bugzilla.redhat.com/show_bug.cgi?id=1272633 */ + .callback = video_detect_force_video, + .ident = "Dell XPS14 L421X", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"), + }, + }, { /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */ .callback = video_detect_force_video, -- 2.20.1