xgamma is not setting gamma
xgamma -gamma 0.8
-> Red 1.000, Green 1.000, Blue 1.000
<- Red 1.000, Green 1.000, Blue 1.000
I’ve tried with sudo and also tried setting individual gamma values with
sudo xgamma -rgamma 0.8 -bgamma 0.8 -ggamma 0.8
but it doesn’t work and gives the same output as above.
Also tried with xrandr but to no avail. This is what I did
xrandr --output XWAYLAND0 --gamma 0.8:0.8:0.8
There is no output in xrandr’s case, but I can’t see any visible difference in contrast
Are you on wayland session? Run from terminal:
Well, none of the x tools like
xrandr will work on wayland … Need to use their wayland alternatives, or switch to X11 (Xorg) session.
Thank you. I’ll try to do that
May I ask which are the available alternatives? This is the only motive that still avoid me to change to Wayland.
Thank you very much!!
If you have external monitor you probably can use
ddcutil – that work with X11 and Wayland
I tried using
gammastep but it gave me an error.
gammastep -v -g 0.7:0.7:0.7 -m wayland
Notice: Solar elevations: > 3.0 (Day), < -6.0 (Night)
Notice: Temperatures: 6500K (Day), 4500K (Night)
Notice: Brightness: 1.00:1.00
Notice: Gamma (Day): 0.700, 0.700, 0.700
Notice: Gamma (Night): 0.700, 0.700, 0.700
Error: Could not control gamma, exiting.
Error: Failed to start adjustment method: wayland
I tried selecting
GNOME on XORG at the login screen, but then I wasn’t able to login
As authors described,
gammastep not work in Wayland.
I’m on a laptop. I tried
ddcutil but it didn’t work
You can ask, but i can’t answer as i never tested them
xrandr alternative AUR (en) - wdisplays-git
xgamma alternative Arch Linux - gammastep 2.0.7-1 (x86_64) documentation at Chinstrap / gammastep · GitLab
or probably AUR (en) - wlsunset that uses this somehow http://aur.archlinux.org/packages/wlr-gamma-service-git
So, quite not sure. Each wayland test i do ends in less than 2 minutes.
I’ll try it sometime in the near future…
Issue fixed by changing to X11 session by editing the file
Uncommented the following line to switch to X11 session
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