xrandr report inverted gamma values

[G.M.]

$ xrandr --output VGA1 --gamma 1:1:1.7
$ xrandr --verbose | grep -iE '(gamma|bright)'
        Gamma: 1.0:1.0:1.7
        Brightness: 1.0
        Gamma: 1.0:1.0:0.59
        Brightness: 1.0
$ xrandr --output VGA1 --gamma 1:1:.6
$ xrandr --verbose | grep -iE '(gamma|bright)'
        Gamma: 1.0:1.0:1.7
        Brightness: 1.0
        Gamma: 1.0:1.0:1.7
        Brightness: 1.0

As you can see in output of commands above, "Gamma" values printed by xrandr --verbose are exactly the invert of the values set: 1/<value set>... Appart for value 1.0 which is correct.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[WinEunuchs2Unix (ricklee518)]

A bug report was filed in 2010, supposedly fixed in 2018 and patched in 2019 in `xrandr` version `1.5.1`. I tried compiling `1.5.1` in Ubuntu but it didn't seem to have been fixed yet. Documented in this Ask Ubuntu Q&A: [When will xrandr version 1.5.1 be available in Ubuntu?](https://askubuntu.com/questions/1192154/when-will-xrandr-version-1-5-1-be-available-in-ubuntu)

[Paul White (paulw2u)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to review all reported bugs in a timely manner.

I'm setting the status of this bug to 'Incomplete' as it's not seen any activity for some time. If this is still an issue when using a currently maintained release of Ubuntu then please let us know which one(s) otherwise this bug report can be left to expire in approximately 60 days time.

[Launchpad Janitor (janitor)]

[Expired for xorg (Ubuntu) because there has been no activity for 60 days.]