@youhour are you able to see the comments in the launchpad bug? If not you could reproduce the issue using a command like:
$ sudo /sbin/hwclock --set --date "2004/10/25 04:10:00"; sudo /sbin/hwclock -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1802233 Title: hwclock test failed on Power9 due to 0.x sec differences / time out waiting for time change To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1802233/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs