Wrong monitor colors on Debian. How to fix?

Question

linux

There is a laptop. Video subsystem Intel+NVIDIA (Optimus). Boot configured on Windows 10 and Linux Debian. Worked in windows, changed the brightness of the screen through hot keys. After rebooting into Linux, I noticed an uncomfortable picture (too high brightness and gamma). To make the image comfortable, I set the brightness and gamma every time I reload the script through xrandr. Moreover, such shamanism is only for the built-in laptop screen. For an external HDMI or VGA monitor, everything is fine.
At the same time, there is a strange line in the X.Org log
[ 10.364] (II) modeset(0): Gamma: 2.20
It seems that somewhere in the depths of the laptop hardware, the wrong value for gamma was registered (by the way, it looks like in the picture) and X .Org reads it as 1.0 for the system. Tell me how to fix this?
The idea of ​​rebooting into win didn't help. there now, too, everything is bad for the built-in screen.

Answer 1

You need to try the service colord(there is a graphical frontend for it in the form of a package gnome-color-manager)