Hello all
I'm very new to Zorin/Linux. So sorry for that 
Just installed Zorin 18 and Steam and I was just wondering why some games are running and some not.
While "Transport Fever 2" and "Depraved" are running just fine, "Foundation" and "Dawn of Man" are not starting. It says "Compatibility tool failed". I tried to use Proton Hotfilx and Proton Experimental but nothing helped.
thank you
Try Proton Eggroll, else check Proton Database on which games work or need tweak.
Welcome to the Forum!
Is Steam installed as Flatpak or .deb Package? If it is Flatpak, I would suggest to try it with the .deb Version:
And could You post Your Hardware Specs? And does Your System run in Wayland or X11? You can check that with the Terminal Command echo $XDG_SESSION_TYPE
I agree! Don't worry about the other boxes I checkmarked. Just put a check in Proton-GE, once that is installed, restart Steam or the computer.
Then right click your game, click properties, then put a check in force compatibility. Then choose Proton GE.
Dear all, thank you very much for your answers.
@Ponce-De-Leon I installed Steam as .deb and I'm using X11.
I try Zorin on my old machine. Intel Core i7 7700K, nvidia GTX 1080, 32 GB RAM
In the meantime I have re-installed Steam. Important to say... now the situation is different. If I install the previously not runing games on the local drive, they are working just fine. If I install them on the secondary SSD they won't start, no error message at all.
So, to me it looks like some games are runing on the local drive only, but not on the secondary one. Very strange
@StarTreker how you get to this Add-ons screen?
thank you all
Software Store, Steam Flatpak page.
Scroll down...
Put check in Proton-GE.
Since you are running the DEB version now of Steam, go install ProtonUp-Qt from software store, and use that tool, to install the Proton's.
Is this tool needed at all? Steam already offers all available proton versions, no third party tool needed.
Is the secondary drive Mounting at startup? You can set it to automount using Disks app.
What is that partition formatted to?
Does it have permissions? (You may need to adjust the actual path using lsblk first):
sudo chown -R $USER:$USER /media/darkhorse/Games
With Flatpak Steam, it doesn't come with Proton-GE. You have to put a checkmark in the Proton-GE box, located on the Steam install page in the software center.
On another computer running POP OS, it doesn't even have the Proton installs, located on the Steam install page in its software center, and unless I'm mistaken, they install the DEB version.
The tool might be necessary to install Proton-GE for the OP, otherwise, why else are they asking how to install Proton. Also, there are a couple of tools in the software center, for managing Proton's, not just that one. There is also ProtonPlus.
At the end of the day, use whatever you need, to install what you need.
Please don't post spam links, thank you. I have removed the link.
Steam offers only Valve's Proton. GE-Proton is by the same fellow who created Nobara Linux, and some games won't work without it. Diablo 4 initially required GE-Proton (then called Proton-GE, don't ask me why they moved the GE). Just today I actually hit a game that hung after the logos with Valve's Proton versions, but swapping in GE-Proton solved the issue.
It's pretty normal for Valve to eventually get those games running on their own version of Proton after which GE is no longer needed. (Again, Diablo 4. I think. I actually don't have it via Steam, but via Battle.net, so I can't confirm.)
Diablo 4 works with normal version of Proton on Steam. (me confirms 
)
Makes sense. The time period when I knew it didn't was right at launch, before I'd even switched to Linux. Rock Paper Shotgun had a guide on getting it working on a Steam Deck, and it required ProtonUp-Qt as above.
