[GH-ISSUE #3063] Virtualbox "Effective UID is not root" #1918

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opened 2026-05-05 08:35:19 -06:00 by gitea-mirror · 2 comments
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Originally created by @RedAtRareCandy on GitHub (Nov 26, 2019).
Original GitHub issue: https://github.com/netblue30/firejail/issues/3063

On Arch Linux, after installing Virtualbox package and Firejail, the only way I can "Start" a VM is if I run Virtualbox from Command Line using /usr/bin/virtualbox.

If I run it via Firejail, even with the --noprofile flag, the following prompt appears when pressing Start on a VM.

Screenshot from 2019-11-26 10-55-15

Originally created by @RedAtRareCandy on GitHub (Nov 26, 2019). Original GitHub issue: https://github.com/netblue30/firejail/issues/3063 On Arch Linux, after installing Virtualbox package and Firejail, the only way I can "Start" a VM is if I run Virtualbox from Command Line using /usr/bin/virtualbox. If I run it via Firejail, even with the --noprofile flag, the following prompt appears when pressing Start on a VM. ![Screenshot from 2019-11-26 10-55-15](https://user-images.githubusercontent.com/10075847/69596219-db353180-103c-11ea-9820-53cdcdafe516.png)
gitea-mirror 2026-05-05 08:35:19 -06:00
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@rusty-snake commented on GitHub (Nov 26, 2019):

Has you changed anything in /etc/firejail/firejail.config?
What is the output of firejail --debug --noprofile virtualbox?

<!-- gh-comment-id:558645517 --> @rusty-snake commented on GitHub (Nov 26, 2019): Has you changed anything in `/etc/firejail/firejail.config`? What is the output of `firejail --debug --noprofile virtualbox`?
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@RedAtRareCandy commented on GitHub (Nov 26, 2019):

Hi rusty-snake,

Wow, you nailed it in one. I had the force-nonewprivs flag enabled in /etc/firejail/firejail.config. Setting this back as the default (no/disabled) has resolved the issue.

Apologies for this - and thanks for pointing me in the right direction!

<!-- gh-comment-id:558657227 --> @RedAtRareCandy commented on GitHub (Nov 26, 2019): Hi rusty-snake, Wow, you nailed it in one. I had the force-nonewprivs flag enabled in /etc/firejail/firejail.config. Setting this back as the default (no/disabled) has resolved the issue. Apologies for this - and thanks for pointing me in the right direction!
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Reference: github-starred/firejail#1918
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