For what it's worth, I started playing Skyrim under linux OpenSUSE 15.2 last week, and for the most part it works great. I tried windows 10 at first but the game crashed whenever I used full-screen mode with an HDMI video/audio output. (Same with Supreme Commander, so it's likely a windows driver issue) It mostly works fine in steam with the latest experimental proton.
I've had the game for a long time, but I never loaded it up previously. I used to play Morrowind quite a bit in years past.
I think I have the non SE version without any DLC. It's quite challenging to find the version number under linux or in Steam.
My only technical issue is that clicking the mouse buttons while duel-wielding in a fight doesn't work. It seems to work fine one-handed outside of a fight, and sometimes in a fight.
Plugging in a controller works fine, but I have a difficult time using one joystick for movement and a second one for looking around after decades of using WASD and a mouse look.
It was also strange that the default was left mouse button activates right hand and right mouse button activates left hand, but I guess that's for backwards compatibility with Oblivion (which I never played), and was easy to fix once I figured it out.
But it's pretty frustrating to have to plug in the controller to swing my swords whenever I get in a fight. I'm pretty sure that wasn't an issue when I first started playing. I did download an older version of proton (5.13?) to get Supreme Commander working under linux, so I wonder if that somehow changed the proton version being used by Skyrim?
As to gameplay, I have to say that I dislike the controller-centric UI. It works very poorly with a mouse and keyboard. So I starting looking around and found out about the SkyUI mod and SKSE, and that led me here to this post. It's unclear to me if SKSE works with my version of Skyrim, although I think I did find an old version that said it matched my skyrim version.
So please keep us up-to-date on your progress! When I get a chance, I'm going to see if I can use what you did to get the above two working.
Edited by mkienenb, 14 January 2021 - 07:32 PM.