xgamma is not setting gamma
Input
xgamma -gamma 0.8
output
-> 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:
echo $XDG_SESSION_TYPE
Well, none of the x tools like xgamma
and 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!!
Tomek
7
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.
Command
gammastep -v -g 0.7:0.7:0.7 -m wayland
Output
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
Tomek
9
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.
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Thank you!!!
I’ll try it sometime in the near future…
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Issue fixed by changing to X11 session by editing the file /etc/gdm/custom.conf
Uncommented the following line to switch to X11 session
# WaylandEnable=false
system
Closed
14
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