[Bug 303131] New: The adjust of brightness is not accurate by the shortcut.

[Yichao Zhou]

https://bugs.kde.org/show_bug.cgi?id=303131

            Bug ID: 303131
          Severity: normal
           Version: unspecified
          Priority: NOR
          Assignee: unassigned-bugs at kde.org
           Summary: The adjust of brightness is not accurate by the
                    shortcut.
    Classification: Unclassified
                OS: Linux
          Reporter: broken.zhou at gmail.com
          Hardware: Other
            Status: UNCONFIRMED
         Component: dualhead
           Product: kde

I am not sure whether this is the right conponent.  I can configure the
shortcut of adjusting brightness in global shortcut ---- KDE daemon.

When I use Fn + F7/F8 on my computer, I can adjust brightness.  But this is not
accurate.

I can control the brightness by /sys/class/backlight/acpi_video0/brightness. 
Everytime I press Fn +F8, the brightness will increase a lot.  From 0 -> 2 -> 5
-> 7.  But this is not I want.  I think the gap of each level should be 1.

Reproducible: Always

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