The Acer Aspire 4810T 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 backlight interface which does work properly. Signed-off-by: Hans de Goede <[email protected]> --- 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 d4edd64dcc2f..fb526ba8825b 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -515,6 +515,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"), }, }, + { + .callback = video_detect_force_native, + /* Acer Aspire 4810T */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 4810T"), + }, + }, { .callback = video_detect_force_native, /* Acer Aspire 5738z */ -- 2.39.0
