After a bit of wrestling with the arm64 ampere system, I was able to reproduce the outlined issues in this bug.
Console log is attached, the system will initially boot into the 5.11.0-27-realtime kernel, however, when a "reboot" command is issued, the host appears sit idle, and will not warm reset. On the console of helo-kernel, the system hang with step 3 with: [ OK ] Finished Reboot. [ OK ] Reached target Reboot. (no further update from this point) There are no other console logs that occur on the host -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1946486 Title: Unable to reboot ARM64 node with 5.11.0-27-realtime To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1946486/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs