First, 21.04 isn't released yet, so you shouldn't be using it unless you're prepared for bugs.
Second, it would be better to ask for general debugging help at https://askubuntu.com/ since this is for reporting bugs. There's no information in your attached dmesg that might help, though that is probably because it's from the boot after your hang, so it doesn't include anything useful. If you have any details about any actual bug please attach it. ** Changed in: systemd (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1925215 Title: System completely freezes and requires reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1925215/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
