The slow CPU (N5000 CPU @ 1.10GHz) may play a role in the watchdog soft lockup. You can increase the watchdog time and check whether the messages will go away and pop up less frequently:
$ echo 20 | sudo tee /proc/sys/kernel/watchdog_thresh The above command will change the default (10) to 20 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1942952 Title: Kernel Call Trace on Secure Boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1942952/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
