Saturation control for xrandr
For Ubuntu, libxrandr-dev and libdrm-dev need to be installed, then you
can run make and it will compile an executable called cmddemo
chmod +x cmdemo cmsaturation.pl
Then copy it to somewhere in your path. ~/.local/bin is a common one, I have
~/bin on my path due to this being a long time ago standard place to set
GOBIN for go install.
run xrandr and it will show you your currently connected displays.
root@bravobravo:/home/loki/color-demo-app# xrandr
Screen 0: minimum 320 x 200, current 4480 x 1440, maximum 16384 x 16384
eDP connected primary 1920x1080+2560+240 (normal left inverted right x axis y axis) 344mm x 194mm
1920x1080 144.00*+ 120.02 96.00 72.00 60.01 50.01 48.00 48.00
1680x1050 144.00
1280x1024 144.00
1440x900 144.00
1280x800 144.00
1280x720 144.00
1024x768 144.00
800x600 144.00
640x480 144.00
HDMI-A-1-0 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 527mm x 296mm
2560x1440 59.95 + 74.78*
1920x1200 59.95
1920x1080 60.00 60.00 50.00 59.94
1600x1200 60.00
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 59.90
1366x768 59.79
1280x800 59.91
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 60.00 59.94
720x400 70.08
Then you can call cmsaturation.pl eDP 1.6 for example, which will crank up
the color saturation of your laptop's inbuilt panel. This was my purpose for
doing it as the default color transform setting on the 144hz panel is very
unsaturated.