Install xcalib by entering the following commands in the terminal:
sudo apt update sudo apt install xcalib
Description:
Tiny monitor calibration loader for Xorg
xcalib loads 'vcgt'-tag of ICC profiles to the X-server using the XVidMode Extension in order to calibrate your display.
Homepage: http://xcalib.sourceforge.net/
Version: 0.8.dfsg1-2ubuntu2
Section: universe/x11