Nvidia silently failing

I have a computer with two GPUs, one of which is an eGPU with an Nvidia RTX 3060, the other being an integrated AMD GPU.

If the eGPU is unplugged and I launch a game with Heroic, it works just fine, but if I try and launch that same game with the eGPU plugged in, it silently fails. I don't see any error messages in the logs, it just says "launching" for awhile and then stops and the play button shows up again.

This is running NixOS, if that's relevant.

colossal-harlequinOP•6/2/25, 2:30 AM

The game I am trying to launch is Pinball M, if that's relevant, but I don't think it's working with any games. I tried nuking the config and all the installed games, no dice.

military-pink•6/2/25, 7:00 PM

disabling umu worked for me. in settings under advanced.

colossal-harlequinOP•6/2/25, 7:09 PM

How do I do that?

colossal-harlequinOP•6/2/25, 7:20 PM

Oh I see, let's give it a shot

colossal-harlequinOP•6/2/25, 7:32 PM

I could kiss you if I didn't think it would put me on a list again. That worked, you rock!

military-pink•6/2/25, 7:33 PM

glad it worked. i updated this morning and heroic stopped but steam was still working. after trying a couple things i tried clicking that and it worked.

colossal-harlequinOP•6/2/25, 7:33 PM

(that is a joke, not really on a list, but seriously thank you)

CommandMC•6/2/25, 7:33 PM

Huh, what an odd error. Could you send in a game log with umu turned on? We might be able to fix the root issue then; you really shouldn't disable umu

military-pink•6/2/25, 7:34 PM

even with the debug logs enabled it shows launching and then silently quits out

colossal-harlequinOP•6/2/25, 7:34 PM

I am happy to send my logs, but yeah it just silently exits

colossal-harlequinOP•6/2/25, 7:35 PM

I don't even know what umu is!

military-pink•6/2/25, 7:40 PM

we are both on nixos and have both discreet nvidia and a igpu. mine is intel and his is amd.

sorry i seem to of deleted the logs when i tried reinstalling the prefix

Ttombert I don't even know what umu is!

CommandMC•6/2/25, 7:45 PM

The readme here explains it in detail
In short: It's a runtime for Proton, to make it run in the environment it's meant to run in. Proton without the runtime can work, but it's up to your system to provide the same libraries that should be present

Nnews at 2 we are both on nixos and have both discreet nvidia and a igpu. mine is intel and...

CommandMC•6/2/25, 7:46 PM

Are you using the native NixOS package, or the Flatpak? If you are using the native package, could you try with the Flatpak (you can import your games)?

colossal-harlequinOP•6/2/25, 7:49 PM

native package for me

colossal-harlequinOP•6/2/25, 7:49 PM

I'm not sure how to do the flatpack on nixos

CommandMC•6/2/25, 7:59 PM

https://flathub.org/setup/NixOS apparently
You can then install Heroic with flatpak install flathub com.heroicgameslauncher.hglflatpak install flathub com.heroicgameslauncher.hgl

colossal-harlequinOP•6/2/25, 8:51 PM

Ok, flatpak worked outta the box

colossal-harlequinOP•6/2/25, 8:52 PM

something's borked with the nixos native package

CommandMC•6/2/25, 9:57 PM

@aidalgol ^^

moderate-tomato•6/2/25, 10:01 PM

This seems to be a common problem on NixOS in general, and I can't do much to troubleshoot because I only have a single GPU desktop. We need someone with a laptop with an nvidia GPU to help out with the package.

colossal-harlequinOP•6/2/25, 10:22 PM

Actually I was able to recreate it on NixOS with just an AMD CPU just now

colossal-harlequinOP•6/2/25, 10:23 PM

non-flatpak version, regular nixos version, I had to disable umu to make it work.

colossal-harlequinOP•6/2/25, 10:23 PM

version says 2.17.0

colossal-harlequinOP•6/2/25, 10:24 PM

Sounds like I need to harass the package maintainer

colossal-harlequinOP•6/2/25, 10:34 PM

It sounds like they should be using the automatic appimage tooling

moderate-tomato•6/2/25, 10:56 PM

That would be me. What appimage tooling? Can you please send the log from a failing run?

colossal-harlequinOP•6/3/25, 2:08 AM

I meant this: https://wiki.nixos.org/wiki/Appimage You can have the appimage auto extract and install stuff for you

Appimage

colossal-harlequinOP•6/3/25, 2:09 AM

one sec, I'll get you a log but it's pretty uninteresting, it just says it was launched

colossal-harlequinOP•6/3/25, 2:10 AM

https://pastebin.com/5zyFnVKU

Pastebin

Launching "Pinball M" (legendary)Native? NoInstalled in: /home/tomb...

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

colossal-harlequinOP•6/3/25, 2:11 AM

https://pastebin.com/s0h9Twhq

Pastebin

(16:32:08) INFO: [Legendary]: Legendary location: /nix/st...

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

colossal-harlequinOP•6/3/25, 2:13 AM

@aidalgol ^

moderate-tomato•6/3/25, 2:44 AM

Hmm, I wonder if I'm not having any issue with umu because I have the nixpkgs umu package installed.

Ccolossal-harlequin I meant this: https://wiki.nixos.org/wiki/Appimage You can have the appimage au...

moderate-tomato•6/3/25, 2:45 AM

OK, we generally don't want to just repackage an appimage in nixpkgs.

colossal-harlequinOP•6/3/25, 2:46 AM

Fair enough, I have some disagreements on the details but this isn't the forum for that kind of discussion.

colossal-harlequinOP•6/3/25, 2:46 AM

I can try installing umu and see if that fixes it

colossal-harlequinOP•6/3/25, 2:46 AM

umu-launcher?

colossal-harlequinOP•6/3/25, 2:50 AM

I installed umu-launcher, still fails in the same way

moderate-tomato•6/3/25, 4:57 AM

Dang. Could you please create a github issue on the nixpkgs repo? And I'm happy to discuss packaging improvements if you want to create another ticket for that.

colossal-harlequinOP•6/3/25, 5:08 AM

Yeah, I can do that

Nvidia silently failing

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