I just noticed LP truncated my line in 2. Make sure both are on individual lines and there is not space next to the backslash.
-- grub-installer ignores grub2/linux_cmdline_default in preseed https://bugs.launchpad.net/bugs/581796 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
