I've been trying to fix our preseed installs as well, and I found the preseed entry that works: (tested on xenial beta2)
d-i debian-installer/add-kernel-opts string net.ifnames=0 quiet splash elevator=noop debconf-get-selections doesn't mention this parameter in the output, but is does work because dmesg confirms that the options are passed to the boot image: [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-18-generic root=UUID=123 ro net.ifnames=0 elevator=noop quiet splash -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/581796 Title: grub-installer ignores grub2/linux_cmdline_default in preseed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/581796/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
