Ok, reproduced with focal and broken seeds from an older image, symptoms are exactly the same (including ps/pstree output). The problem is caused by blocking on snapd.seeded.service (which waits for seeding to complete, but it's never going to complete with broken seeds).
Given that this is an edge case (we don't expect images with broken seeds) and focal images have been fixed already, I'm lowering the priority. We will discuss what to do to handle this gracefully. ** Changed in: snapd Importance: Critical => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1868706 Title: Snapd postinst script hangs To manage notifications about this bug go to: https://bugs.launchpad.net/snapd/+bug/1868706/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs