From 96b709be183c56293933ef45b8b75f8af268c6de Mon Sep 17 00:00:00 2001 From: "Jiri Slaby (SUSE)" Date: Tue, 18 Apr 2023 08:42:00 +0200 Subject: [PATCH] ACPI: video: Add backlight=native DMI quirk for Lenovo Ideapad Z470 The Lenovo Ideapad Z470 predates Windows 8, so it defaults to using acpi_video for backlight control. But this is not functional on this model. Add a DMI quirk to use the native backlight interface which works. Link: https://bugzilla.suse.com/show_bug.cgi?id=1208724 Signed-off-by: Jiri Slaby (SUSE) Reviewed-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 18cc08c..0c376ed 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -446,6 +446,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, }, { + /* https://bugzilla.suse.com/show_bug.cgi?id=1208724 */ + .callback = video_detect_force_native, + /* Lenovo Ideapad Z470 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "IdeaPad Z470"), + }, + }, + { /* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */ .callback = video_detect_force_native, /* Lenovo Ideapad Z570 */ -- 2.7.4