First problem

First it doesnt start so I switch to older version of Proton (6.3-8) and then this error ocurred The procedure entry point cef_browser_create_sync could not be located in the dynamic link library libcef.dll

Tested solution 1 [does't worked for me]

I try rename libcef.dll.old in /home/zyxy/.local/share/Steam/steamapps/compatdata/235600/pfx/drive_c/Program Files (x86)/Ubisoft/Ubisoft Game Launcher to libcef.dll, to no avail.

Solution 2

Next I try to reinstall Uplay service, because I have read that steam installed older version of Uplay. I downloaded installer from Ubisoft connect and install it in wine prefix like this. WINEPREFIX=$HOME/.local/share/Steam/steamapps/compatdata/235600/pfx ~/.local/share/Steam/steamapps/common/Proton\ 6.3/dist/bin/wine ~/Downloads/UplayInstaller.exe

Second problem

I run into vulcan error: terminate called after throwing an instance of 'dxvk::DxvkError

Solution

I solve it by installing all vulcan drivers/libs for my amd card. sudo pacman -S --needed lib32-mesa vulkan-radeon lib32-vulkan-radeon vulkan-icd-loader lib32-vulkan-icd-loader I haven't installed lib32-vulkan-radeon. This solved all my problems, and game run just fine.