This is because the intel-microcode package is not included on the server iso for Ubuntu 18.04 but it is for the desktop iso. This also seems to be the case for Ubuntu 20.04.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1938588 Title: Ubuntu Server 18.04.5 install fails: TSC_DEADLINE disabled due to errata To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1938588/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs