Oh god I think the problem is fixed!
I overlooked something in the Nvidia slider settings. For some reason I had selected "Blue" in the Color Channel drop down menu, and when I clicked through the different options (blue, red, green, all...
Hey thanks for the answer, it's highly appreciated!
I tried "dispwin -c", and absolutely nothing happened :/
It's very very strange, because I have not done any tinkering with any program other than argyllcms, dispwin, dispcal.
Anyway thanks for...
TLDR: Is it possible that some custom Lut is loaded on startup even though I have not set it to do so?
Decided to try it again after just using the gamma slider for a year 😅
And for some magical reason, I got it working!
No idea what I did...