Messages in this thread Patch in this message | | | From | "Jiri Slaby (SUSE)" <> | Subject | [PATCH] ACPI: video: Add backlight=native DMI quirk for Lenovo Ideapad Z470 | Date | Mon, 17 Apr 2023 12:48:17 +0200 |
| |
From: Hans de Goede <hdegoede@redhat.com>
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) <jirislaby@kernel.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- 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 69ef2d9710c2..af5cea005f54 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -459,6 +459,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_BOARD_NAME, "Lenovo IdeaPad S405"), }, }, + { + /* 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, -- 2.40.0
| |