This is a note to let you know that I've just added the patch titled ACPI: video: Add backlight=native DMI quirk for Dell Vostro 15 3535 to the 6.2-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: acpi-video-add-backlight-native-dmi-quirk-for-dell-v.patch and it can be found in the queue-6.2 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit d8432d1284945b7c8dee16105a79e0797ec43a2f Author: Chia-Lin Kao (AceLan) <acelan.kao@xxxxxxxxxxxxx> Date: Thu Mar 2 17:33:00 2023 +0800 ACPI: video: Add backlight=native DMI quirk for Dell Vostro 15 3535 [ Upstream commit 89b0411481967a2e8c91190a211a359966cfcf4b ] Sometimes the system boots up with a acpi_video0 backlight interface which doesn't work. So add Dell Vostro 15 3535 into the video_detect_dmi_table to set it to native explicitly. Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@xxxxxxxxxxxxx> Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 710ac640267dd..14d6d81e536fe 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -716,6 +716,13 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"), }, }, + { + .callback = video_detect_force_native, + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15 3535"), + }, + }, /* * Desktops which falsely report a backlight and which our heuristics