I need to calibrate my laptop screen. But doing this with some picture from the internet in my browser (which I don't trust in terms of colors) and having to fiddle with
xrandr settings in the shell is not the ideal environment. I'm searching for a software that helps me calibrating my screen (Gamma, brightness, color, ...) using some images and sliders or some other way of real-time feedback. Somewhat like the Windows color calibration.
I do not want to have to buy some hardware to do this, like for the Gnome built-in calibration.
My system: Arch Linux, Gnome, XOrg