I was also having the issue in Ubuntu Budgie as well where I’m unable to operate Proton at all, even on games and software that are supposed to work with it. I’m not sure what the reason is that is causing my system to not work with Proton, I have the latest BIOS for my ASUS TUF X570 Gaming Plus (Wi-Fi), I have a Ryzen 5700G, and a Radeon RX 6700.
Umm… I never needed to interact with proton. Steam client took care of it, at least for me. What exactly are you trying to do with proton, and what is the issue?
When I activate the SteamPlay to be able to use Proton, no games or software loads at all, even games that are supposed to work with Proton. The software will not load or anything, it just times out, an example of a game that is supposed to work on Linux using Proton is the Tomb Raider Remastered trilogy and it will not load at all when I’m in Linux, it will, however work without issue in Windows.
That would likely be an issue with Steam, and perhaps your video card drivers (if Nvidia), and probably not something related to KDE and Plasma.
It might be worth checking out reports on the games on ProtonDB, there may be a runtime command tweak that might be useful, if someone has come across similar issues.
Trying different versions of Proton is often a useful thing to try as well.
I have a Radeon RX 6700, even before I got this graphics card and was only using my 5700G integrated, it was the same thing. I have this issue on both Ubuntu Budgie as well as here on Kubuntu. I was going to install ArcoLinux to have a triple boot on my system of Ubuntu, ArcoLinux, and the malware known as Windows 11 to see if the issues with Proton would be fixed going with the arch-based, but that is always running into a packman error when installing it. On the Budgie desktop, I have tried the different versions and yet nothing seems to be working.
I can’t say what it going on for you.
Until last month, I was using an RX6650 XT on an Intel i5 system running KDE neon as my Steam PC, and had no major issues with games at all, other than some command tweaks found on ProtonDB on some occasions.
I found out when asking as well on the Steam community that it wasn’t working at all because the drive I have my Steam library on is an NTFS partition and Proton doesn’t work with NTFS, just EXT4. If I move the install files onto my boot drive for Kubuntu, Proton can launch them. There are apparently some ways to get Proton to recognize NTFS partitions so that the games and software would load, but it’s not stable currently.
Yes, this has been a thing with Steam for many years.