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Hi everyone!

Around a year ago I went through many steps (Boxtron and other stuff) to get Earthworm Jim running on my Steam Deck just to discover afterward that these were not needed in the end.

I think I've uninstalled everything but I can't get rid of two error messages I'm getting every time I switch to desktop mode.

One of them says: Game not recogninzed as DOSBox compatible

The second one says: DOSBox argument error: "unrecognized arguments: -d3d12"

https://github.com/dreamer/boxtron/issues/58 https://github.com/ValveSoftware/steam-for-linux/issues/11435

I've found two conversations on github about these, but I have to admit I don't really know what they're talking about and what to do.

I wouldn't want to break my system to solve these errors as these are just minor inconveniences without any influence on functionnality. Could someone guide me on what to do?

Thanks in advance

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this post was submitted on 12 Jan 2026
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