On Tue, Jun 20, 2023 at 8:45 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
>
> The Dell Studio 1569 predates Windows 8, so it defaults to using
> acpi_video# for backlight control, but this is non functional on
> this model.
>
> Add a DMI quirk to use the native intel_backlight interface which
> does work properly.
>
> Reported-by: raycekarneal <raycekarneal@xxxxxxxxx>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> ---
> 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 eb014c0eba42..18cc08c858cf 100644
> --- a/drivers/acpi/video_detect.c
> +++ b/drivers/acpi/video_detect.c
> @@ -528,6 +528,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
> DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
> },
> },
> + {
> + .callback = video_detect_force_native,
> + /* Dell Studio 1569 */
> + .matches = {
> + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> + DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1569"),
> + },
> + },
> {
> .callback = video_detect_force_native,
> /* Acer Aspire 3830TG */
> --
Applied as 6.5 material, thanks!
