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possiblylinux127

Podman loses access to my GPU when I log out (self.linuxquestions)

submitted 9 months ago* (last edited 8 months ago) by possiblylinux127 to c/linuxquestions

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I have lingering setup and I can still access the container but for what ever reason Podman seems to be unable to access the GPU for no apparent reason.

I think this may be an issue with systemd but I'm not entirely sure.

Solution: you need to be logged in for it to work. I accomplished this on a separate VM with autologin to icewm.

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[–] possiblylinux127 2 points 8 months ago (1 children)

For me it is owned by the video user and the render group.

I don't mind running iceWM in a VM as it has a fairly small overhead. Its not like I'm actually using the desktop so it takes pennies worth of ram and no CPU

[–] [email protected] 1 points 8 months ago (1 children)

Interesting. For me, it's only the /dev/dri/render* device that is owned by the render group, but this device is world-RW anyway. Still, I guess you can add the user to the render group too? I did find some info that Debian uses that group this way, though I have never used Debian myself, so can't verify that.

[–] possiblylinux127 2 points 8 months ago (1 children)

I already did that so that podman could access the device. (Podman runs as a local user). What was strange was that podman couldn't access it without a graphical session running but my local user could.

[–] [email protected] 1 points 8 months ago

No idea then :( AFAIK the logind mechanism I mentioned originally is based only on permissions, but I had never really needed to look into it further.