Question

6

after Ubuntu 21.10 upgrade: "cannot attach cgroup program" operation not permitted

rated 0 times [ 6] [ 0] / answers: 1 / hits: 5929 / 3 Years ago, tue, may 11, 2021, 9:27:15

Right after upgrading a Ubuntu 21.04 to 21.10, I got this issue:
Chromium/Firefox won't start.
The error(seen in terminal) is:

$ firefox

cannot attach cgroup program: Operation not permitted

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overine

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answered 3 Years ago untroo · Accepted Answer

Is it possible that you are using a Linux kernel that doesn't properly support the unified cgroup hierarchy? I had the same problem as you and it turned out that my GRUB was loading an ancient kernel, instead of a current one.