Thanks for the instructions on how to reproduce your case. I did run containers in Focal and Impish in the way that you described and I confirm that the behavior is different between them. In Focal after bootstrapping and starting the container the lxc-console works as expected:
ubuntu@focal:~$ sudo lxc-console -n test Connected to tty 1 Type <Ctrl+a q> to exit the console, <Ctrl+a Ctrl+a> to enter Ctrl+a itself Ubuntu 20.04.3 LTS test pts/0 test login: ubuntu Password: Welcome to Ubuntu 20.04.3 LTS (GNU/Linux 5.4.0-88-generic x86_64) * Documentation: https://help.ubuntu.com * Management: https://landscape.canonical.com * Support: https://ubuntu.com/advantage The programs included with the Ubuntu system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. To run a command as administrator (user "root"), use "sudo <command>". See "man sudo_root" for details. ubuntu@test:~$ But in Impish the same does not happen: ubuntu@impish:~$ sudo lxc-console -n test Connected to tty 1 Type <Ctrl+a q> to exit the console, <Ctrl+a Ctrl+a> to enter Ctrl+a itself Even if you try to pass another tty number there is no login prompt in the console, as you stated. I see you were checking for getty@.service but looking at the different services running inside both containers what I think we really want is container-getty@.service. The condition path in this service is /dev/pts/%I which is already satisfied in the Impish container when I logged in, all I had to do was starting this service and I was able to log in using the other tty numbers. We cannot enable this service by default because of its nature, so I am wondering if any of the conditions are not satisfied during the container boot time. In the syslog of the Focal container I can see: Oct 26 19:48:17 test systemd[1]: Finished Permit User Sessions. Oct 26 19:48:17 test systemd[1]: Started Console Getty. Oct 26 19:48:17 test systemd[1]: Started Container Getty on /dev/pts/0. Oct 26 19:48:17 test systemd[1]: Started Container Getty on /dev/pts/1. Oct 26 19:48:17 test systemd[1]: Started Container Getty on /dev/pts/2. Oct 26 19:48:17 test systemd[1]: Started Container Getty on /dev/pts/3. And in the Impish one just this: Oct 26 19:17:20 test systemd[1]: Finished Permit User Sessions. Oct 26 19:17:20 test systemd[1]: Started Console Getty. I did not have time to get to the bottom of this but it seems a real issue, I am marking this bug as Triaged and subscribing ubuntu-server for further investigation. ** Changed in: lxcfs (Ubuntu) Status: Incomplete => Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1947811 Title: cgroups broken in impish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxcfs/+bug/1947811/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
