On Sony Vaio VPCEH3U1E, ACPI backlight control does not work, and native backlight works. Thus force use vendor backlight control on this system. Link: https://bugzilla.kernel.org/show_bug.cgi?id=202401 Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx> --- 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 43587ac..0e0a392 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -141,6 +141,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"), }, }, + { + .callback = video_detect_force_vendor, + .ident = "Sony VPCEH3U1E", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), + DMI_MATCH(DMI_PRODUCT_NAME, "VPCEH3U1E"), + }, + }, /* * These models have a working acpi_video backlight control, and using -- 2.7.4
