https://bugzilla.kernel.org/show_bug.cgi?id=43051

           Summary: Inverted values for actual_brightness
           Product: ACPI
           Version: 2.5
    Kernel Version: 3.0.0-17
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Power-Video
        AssignedTo: acpi_power-vi...@kernel-bugs.osdl.org
        ReportedBy: mraz...@digitalchocolate.com
        Regression: No


/sys/class/backlight/acpi_video0/actual_brightness

has inverted values that doesn't correspond with what we can write in
/sys/class/backlight/acpi_video0/brightness


For example, when doing:
"echo 8 > /sys/class/backlight/acpi_video0/brightness"

and then:
"cat /sys/class/backlight/acpi_video0/actual_brightness",

it outputs 2. It should output 8.

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