Launching Steam via Linux App Launcher causes many games to not launch

[pine condor]

As described - using "Linux App Launcher" to launch Steam results in a variety of games not launching properly (including Hades, Hades 2, Doom: The Dark Ages, Octopath Traveler 2).

active-win-pos-rs 0.9.1, anyhow 1.0.101, base64 0.22.1, built 0.8.0, dashmap 6.1.0, elgato-streamdeck 0.12.1, fix-path-env 0.0.0, font-loader 0.11.0, fs2 0.4.3, futures 0.3.31, hidapi 2.6.4, image 0.25.9, json-patch 4.1.0, log 0.4.29, log-panics 2.1.0, open 5.3.3, os_info 3.14.0, path-slash 0.2.1, reqwest 0.13.1, semver 1.0.27, serde 1.0.228, serde-inline-default 1.0.1, serde_json 1.0.149, serde_with 3.16.1, sysinfo 0.38.0, tauri 2.10.2, tauri-build 2.5.5, tauri-plugin-aptabase 1.0.0, tauri-plugin-autostart 2.5.1, tauri-plugin-cors-fetch 4.2.0, tauri-plugin-deep-link 2.4.7, tauri-plugin-dialog 2.6.0, tauri-plugin-log 2.8.0, tauri-plugin-single-instance 2.4.0, tiny_http 0.12.0, tokio 1.49.0, tokio-tungstenite 0.28.0, urlencoding 2.1.3, windows-sys 0.61.2, zip 6.0.0```

[wheat linden]

To help others find answers, you can mark your question as solved via Right click solution message -> Apps -> ✅ Mark Solution

[pine condor]

Launching steam via command line (/usr/bin/steam) or via the Application Launcher in Fedora KDE Plasma seems to function normally (games can launch).

[mellow fractal]

is it doing it via the desktop file? There's a bug in Steam's desktop file

[pine condor]

I can confirm when I get home, but from what I remember, the details of the Linux App Launcher button say it's running /usr/bin/steam %U. I don't know if that's the desktop file.

[pseudo moat]

Yes. It runs the .desktop files

[mellow fractal]

yeah and I veitmitly remember there being a line you have to remove from Steam's desktop file for it to work

[pine condor]

So I found https://www.reddit.com/r/Fedora/comments/1nf4gdn/is_anyone_having_a_problem_with_steam_not/ - which suggests removing PrefersNonDefaultGPU and X-KDE-RunOnDiscreteGpu from the /usr/share/applications/steam.desktop file. I did so, launched Steam from my streamdeck, and tried launching one of the faulty games (Hades) - the issue still replicates, where the steam button changes from "Play" to "Stop", but then changes back to "Play" without launching anything

Is there a different fix to apply to steam.desktop?

[dapper nest]

@pine condor Can't repro. Tried KSP, PCBS, Civ VI, TABS, Bopl Battle and Goat Simulator and they all launched fine.

[pine condor]

Is there any kind of extra logging I can enable and/or provide to help track down the issue?

[pine condor]

I updated to v2.9.1 via opendeck-2.9.1-1.x86_64.rpm and can no longer reproduce.

¯_(ツ)_/¯

[dapper nest]

Interesting