I managed to get the shit working. Graphics is slow but still usable.
Getting my TV to display 4k 60hz took me about 20+ hours to fix. What solved the problems will not impress anyone:
The biggest problem was that the EDID file (somewhere on the harddrive) for my TV was broken, with some command I could see that the hash didn't match.
I think an EDID is some info that the TV sends to the computer containing info about the parameters of the TV so that the computer can correctly identify it and knows what resolutions and frequences it supports.
I downloaded new firmware on my TV and suddenly it started working, also the EDID hash now matched! Never thought that would work. Also my TV has always worked flawlessly on Windows 10 even with older firmware no problems at all ever.
Some other shit: - I think I prefer Noveau to proprietary actually. Worse 3d performance but everything else works better for me with Noveau. Noveau somehow was better at identifying my screen, proprietary tended to name the screen HDMI-0 because it had no idea what screen I had. - I had most success on Ubuntu and I have no idea why. Tried Manjaro too but had more problems with it. - Wayland never worked, so I use X11.
Now I will not touch the setup. No way I'll risk fucking it up and wasting another 20 hours reading stupid copy-pasted shit on forums.
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