4.14-stable review patch. If anyone has any objections, please let me know.
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From: Hans de Goede hdegoede@redhat.com
commit bbf038618a24d72e2efc19146ef421bb1e1eda1a upstream.
Just like many other Samsung models, the 670Z5E needs to use the acpi-video backlight interface rather then the native one for backlight control to work, add a quirk for this.
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1557060 Cc: All applicable stable@vger.kernel.org Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/acpi/video_detect.c | 9 +++++++++ 1 file changed, 9 insertions(+)
--- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -220,6 +220,15 @@ static const struct dmi_system_id video_ }, }, { + /* https://bugzilla.redhat.com/show_bug.cgi?id=1557060 */ + .callback = video_detect_force_video, + .ident = "SAMSUNG 670Z5E", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), + DMI_MATCH(DMI_PRODUCT_NAME, "670Z5E"), + }, + }, + { /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */ .callback = video_detect_force_video, .ident = "SAMSUNG 730U3E/740U3E",