From efed63bc78ede446f8bdc3b7b1730882016d332d Mon Sep 17 00:00:00 2001 From: Dirga Yuza Date: Fri, 11 Sep 2026 21:33:06 +0700 Subject: [PATCH] ACPI: video: add backlight=native DMI quirk on Acer Nitro AN515-58 The Acer Nitro AN515-58 requires the same quirk entry as AN515-46, since its firmware also advertises the NVIDIA WMI EC backlight GUID. However, on this hybrid graphics setup, the internal display is wired to the Integrated GPU (Intel Iris Xe Graphics). As a result, the nvidia_wmi_ec_backlight driver fails to probe, leaving no backlight device registered and rendering the brightness keys and desktop brightness slider non-functional. Setting acpi_backlight=native allows intel_backlight to register its backlight interface and restoring brightness control. Add a DMI quirk entry so this model uses the native backlight by default. Signed-off-by: Dirga Yuza Link: https://patch.msgid.link/20260911143306.49015-1-dirgayuza123@gmail.com Signed-off-by: Rafael J. Wysocki --- drivers/acpi/video_detect.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index e3b69f876d24..3037fd18d420 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -929,6 +929,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Nitro AN515-46"), }, }, + { + .callback = video_detect_force_native, + /* Acer Nitro AN515-58 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "Nitro AN515-58"), + }, + }, /* * x86 android tablets which directly control the backlight through