assetto-corsa-with-csp-on-proton-5-0.txt

Updated more detailled guide: https://gist.github.com/ANBAL534/8057b5200ace9bdd98795b627e550ba0

Make steam force Proton 5.0-10 (Needs to be this version, no modern one because modern proton/wine versions have broken dotnet winetricks installs, needed to run the game)

* If at any stage of the steps wine asks you to install mono or gecko, just cancel/press 'no' on the popup and continue.
* If at any stage of the steps a info/warning/error message appears and asks you if you want to get more information in a webpage just cancel/press 'no' on the opoup and continue.
* If you mess up and need to restart the process from the start you have to manually delete the 'pfx' (steam's wine bottle folder) (/path/to/SteamLibrary/steamapps/compatdata/244210/pfx) and restart the process from the very begining.

Execute the game once and let it close
Then:
    $ WINE=/home/yourusername/path/to/steam/steamapps/common/Proton\ 5.0/dist/bin/wine protontricks 244210 -q dotnet452
    $ WINE=/home/yourusername/path/to/steam/steamapps/common/Proton\ 5.0/dist/bin/wine protontricks 244210 -q dotnet472
    $ WINE=/home/yourusername/path/to/steam/steamapps/common/Proton\ 5.0/dist/bin/wine protontricks 244210 -q d3dcompiler_43 d3dx11_43
    $ WINE=/home/yourusername/path/to/steam/steamapps/common/Proton\ 5.0/dist/bin/wine protontricks 244210 -q vcrun2015 win10

The base game will work now.

If you want CM and CSP mods (https://acstuff.ru/) you have to:
    - Save "Content Manager.exe" as "Content Manager Safe.exe" in the root game folder (next to acs.exe) and decompres CSP's "extension" folder and "dwrite.dll" also in root folder (so dwrite.dll is next to acs.exe). 
    - Execute 
        WINEPREFIX=/path/to/SteamLibrary/steamapps/compatdata/244210/pfx WINE=/path/to/SteamLibrary/steamapps/common/Proton\ 5.0/dist/bin/wine winecfg
Go to Libraries and add "dwrite" as "Native, then built in"
[This step might throw some errors at you, ignore them, everything will be fine]

    - Create folder "config" in "/path/to/steam/library/compatdata/244210/pfx/drive_c/Program Files (x86)/Steam/" and copy "loginusers.vdf" from "~/.steam/root/config/" there.

   - Lastly modify Assetto Corsa's launch options to:
       /path/to/steam/steamapps/common/Proton\ 5.0/proton waitforexitandrun "/path/to/SteamLibrary/steamapps/common/assettocorsa/Content Manager Safe.exe"; PROTON_USE_DXVK=1 echo %command%

Adapted from Carbon's report to make CM and CSP work in the last versions.

I have a problem launching the installation:
"WINE=/home/yourusername/path/to/steam/steamapps/common/Proton\ 5.0/dist/bin/wine protontricks 244210 -q dotnet452"
it tells me that the Steam installation directory is not found.
"Steam installation directory could not be found"
I have set the Steam dir variable by putting in the terminal
STEAM_DIR=path of the local assetto files
i just do not see the variable that I have created.
Any help would be much appreciated

did it just as told, tho it says that .net4.5.2 isn't installed...

even after running protontricks 244210 -q dotnet452 it still asks the same thing...

if anyone is following this in 2024, i got it working on my system.
ubuntu 22.04, radeon 7600, amd 9 something.
AC+ CM(latest)+ CSP(1.79 manual install. CM install wasnt working. ) + SOL(latest)
i could leave the dash instruments on.

i used the latest wine. v8 i think. then protontricks installed using pipx.
follow the long guide above thanks @Acreen