On Tuesday, February 17, 2015 07:07:29 PM Jens Reyer wrote: > Add video_disable_native_backlight quirk for SAMSUNG 900X3C/900X3D/ > 900X3E/900X4C/900X4D laptops. > > The native intel backlight controls do not work correctly on SAMSUNG > Series 9 (900X3C/900X3D/900X3E/900X4C/900X4D) laptops: > One machine has an completely dimmed (= black) display after boot at the > GDM login screen and brightness controls work only between 0 and 5% > (= no effect). > Another machine has the same brightness control issues if an external > HDMI monitor is or gets connected, although the initial brightness is > ok. > After login to Gnome both machines always work fine. > > Tested on both machines. > > Bug-Link: https://bugs.freedesktop.org/show_bug.cgi?id=87286 > Bug-Link: https://bugs.debian.org/772440 > Signed-off-by: Jens Reyer <jens.reyer@xxxxxxxxx> Applied, thanks! > --- > drivers/acpi/video.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c > index 88a4f99..debd309 100644 > --- a/drivers/acpi/video.c > +++ b/drivers/acpi/video.c > @@ -540,6 +540,15 @@ static struct dmi_system_id video_dmi_table[] __initdata = { > DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"), > }, > }, > + { > + /* https://bugs.freedesktop.org/show_bug.cgi?id=87286 */ > + .callback = video_disable_native_backlight, > + .ident = "SAMSUNG 900X3C/900X3D/900X3E/900X4C/900X4D", > + .matches = { > + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), > + DMI_MATCH(DMI_PRODUCT_NAME, "900X3C/900X3D/900X3E/900X4C/900X4D"), > + }, > + }, > > { > /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */ > -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
