ngraham added a comment.
Lowest setting:
$ cat /sys/class/backlight/intel_backlight/actual_brightness
0
Next setting:
$ cat /sys/class/backlight/intel_backlight/actual_brightness
2
Same values as `/sys/class/backlight/*/brightness`, in other words.
REPOSITORY
R122 Powerdevil
REVISION DETAIL
https://phabricator.kde.org/D13095
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