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["G.M." <1444895@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

$ xrandr --verbose | grep -iE '(gamma|bright)'
        Gamma:      1.0:1.0:1.7
        Brightness: 1.0
$ xrandr --output VGA1  --brightness .75
$ xrandr --verbose | grep -iE '(gamma|bright)'
        Gamma:      1.0:1.0:1.0
        Brightness: 0.75

As can be seen in the above command output, changing the brightness with
xrandr resets the gamma ratio to 1/1/1/ instead of 1/1/.6 (values in
xrandr --verbose output are inverted...)

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1444895

Title:
  xrandr --brightness resets gamma ratio

Status in xorg package in Ubuntu:
  New

Bug description:
  $ xrandr --verbose | grep -iE '(gamma|bright)'
          Gamma:      1.0:1.0:1.7
          Brightness: 1.0
  $ xrandr --output VGA1  --brightness .75
  $ xrandr --verbose | grep -iE '(gamma|bright)'
          Gamma:      1.0:1.0:1.0
          Brightness: 0.75

  As can be seen in the above command output, changing the brightness
  with xrandr resets the gamma ratio to 1/1/1/ instead of 1/1/.6 (values
  in xrandr --verbose output are inverted...)

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