I had the same issue: When the Package Configuration dialog came up on Configuring lxd LXD snap track latest/3.0/4.0 When I chose 4.0 and proceed, the installation hung indefinitely at ==> Installing the LXD snap from the 4.0 track for ubuntu-20.04
My workaround was to do the following at the point the Configuration dialog showed up in seperate shell: sudo snap install hello-world sudo snap list Then proceed with Configuring lxd. The installation proceeded and did not hang at the Installing LXD snap point $ sudo snap list [sudo] password for pos: Name Version Rev Tracking Publisher Notes core 16-2.44.3 9066 latest/stable canonical* core core18 20200427 1754 latest/stable canonical* base hello-world 6.4 29 latest/stable canonical* - lxd 4.0.1 14890 4.0/stable/… canonical* - -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1874878 Title: Did a "do-release-upgrade" from 18.04 to 20.04 and got an error message To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1874878/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs