https://bugzilla.kernel.org/show_bug.cgi?id=56711
Summary: ASUS N56VJ Screen Brightness keys not working
correctly
Product: ACPI
Version: 2.5
Kernel Version: 3.8 git
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
Running Ubuntu kernel 3.8.0-17.27 (apparently based off 3.8.5).
wKeys Working better than ever before, definitely - the fn-f5 and fn-f6 buttons
now changing with gnome/unity indications for the first time - though the range
is only between 85% and 96% according to `cat
/sys/class/backlight/acpi_video0/brightness` - only those two discrete values.
(Aaron: "That probably is due to the broken implementation of _BQC in this
system's BIOS.")
(Ubuntu settings panel brightness control works fine, 0-100%. No dimming on
battery discharge though :( )
root@guava:~# ls -al /sys/class/backlight/
total 0
lrwxrwxrwx 1 root root 0 Apr 12 00:10 acpi_video0 ->
../../devices/pci0000:00/0000:00:02.0/backlight/acpi_video0
lrwxrwxrwx 1 root root 0 Apr 12 00:14 intel_backlight ->
../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight
echo x > /sys/class/backlight/acpi_video0/brightness
also works fine, values 0-100.
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