Proton Experimental not found by protontricks

[alizeegagnon]

Describe the bug After choosing Cyberpunk in the protontricks GUI, the app reports that no active Proton installation was found. However, Proton Experimental is installed on my system. I ended up solving it while writing the post, but wanted to post in case someone ran into the same issue !

To Reproduce Steps to reproduce the behavior:

1. Run command protontricks -v --gui
2. select Cyberpunk from the list
3. Proton could not be found, full error log pasted below

Expected behavior I've never used the app before (maybe Winetricks a long while ago ?), I assume it should find the Proton install and proceed to other stuff

System (please complete the following information):

• Distro: Arch Linux, using Wayland + Sway
• Protontricks installation method: through the Aur, installed today
• Protontricks version: 1.10.5
• Steam version: No Beta Choosen, latest through multilib

Additional context

This is on a fresh install of Linux. The only game installed through Steam is currently Cyberpunk. I have not installed Proton GE. Steam chose to install Proton Experimental for the game, there is no other Proton version installed through it, I did not specify any compatibility tool to use, apart from enabling Steam Play. The game itself runs fine, I just want to mod it.

I have followed the steps in this issue: #136

• I did try to delete appinfo.vdf, then have Steam recreate it. It did not solve the bug.
• When I generated a readable version of it through python -c "from pathlib import Path; import pprint; from protontricks.steam import get_appinfo_sections; pprint.pprint(get_appinfo_sections(Path('/home/alz/.steam/steam/appcache/appinfo.vdf')))" > ~/appinfo-output.txt I did find a listing for proton_experimental in the compat_tools section. I can paste more if needed.
• config.vdf did not mention proton at all: cat config.vdf | grep -i proton gives no result

I also looked at other issues, like #225. I can confirm that Proton Experimental is installed at ~/.local/share/Steam/steamapps/common/Proton\ -\ Experimental. No other issue I could find seemed to fit mine.

If the error happens when trying to run a Protontricks command, run the command again using the -v flag and copy the output!

~> protontricks -v --gui protontricks (INFO): Found Steam directory at /home/alz/.local/share/Steam protontricks (INFO): Using default Steam Runtime at /home/alz/.local/share/Steam/ubuntu12_32/steam-runtime protontricks (INFO): WINETRICKS environment variable is not available. Searching from $PATH. protontricks (INFO): Found 1 Steam library folders protontricks (INFO): Currently logged-in Steam user: :sunglasses: protontricks (INFO): Couldn't find custom shortcuts. Maybe none have been created yet? protontricks (INFO): Using 'zenity' as GUI provider protontricks (INFO): No compatibility tool found by reading Steam configuration. Using stable version of Proton as fallback. protontricks (ERROR): Could not find configured Proton installation! protontricks (ERROR): Active Proton installation could not be found automatically. Proton installation could not be found!

I actually managed to solve this myself

export PROTON_VERSION="Proton Experimental" did the trick !

[alizeegagnon]

Could this solution be added to the troubleshooting steps ? It would have saved me some time !

[Matoking]

Researched this issue a bit more. Turns out Steam has a set of default Proton versions for around 18 games in the Steam Play manifest in ~/.steam/steam/appcache/appinfo.vdf, including Cyberpunk 2077 which has a comment remarking that Proton Experimental is used by default for DualSense support. Protontricks didn't read these settings previously, leading it to either detect the wrong Proton version or fail to find one entirely.

---

I've pushed a fix to fix_app_mapping_detection branch. Since you're on Arch Linux, you could build it from protontricks-git in AUR. Change the source line in PKGBUILD to:

source=('git+https://github.com/Matoking/protontricks.git#branch=fix_app_mapping_detection')

You can also use pipx with the following command:

pipx install --force git+https://github.com/Matoking/protontricks.git@fix_app_mapping_detection

Can you check that the fixed version detects Proton Experimental correctly?