Hello there and thanks for reading,

I'm having a problem while launching the game using the Portal.bat file of source unpack.

When I launch portal direcly from steam, it works well (I own a copy of the game btw) !

But after following the tutorial provided for linux users (Yes I know, but my windows PC just broke), I add Portal.bat file as a non-steam game and set compatibility to proton 8.0, the game tries to start (I can see a CLI poping in and out) and Steam starts the game but closes it 3 seconds later (I can't even see the window of the game)

If someone has an idea or had the same experience ...

What I've tried :

• Changing proton version of portal.bat file
• Renaming all files to lowercase
• Re-downloading Portal & Source_Unpack (now v.2.5)

Note : I'm running on Xubuntu

Thanks in advance

Can you try setting the launch options in Steam's settings for the game to:

%command% > $HOME/portal.log 2>&1

This will save the game's and proton's logs to a file called portal.log in your home directory, which could help with debugging. If the game is crashing you should be able to see the reason why in the log.

Did you get this working? trying to set up source unpack on ubuntu and wondering if you had success.