Ran into this problem on 18.04 server as well. Removing the overriding line in /etc/default/grub.d/50-curtin- settings.cfg works around it for now.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1569567 Title: Running update-grub does not update /boot/grub/grub.cfg with GRUB_CMDLINE_LINUX_DEFAULT from /etc/default/grub To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/curtin/+bug/1569567/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs