The only difference between this and the default preseed (which installs correctly) is that d-i partman-auto/method string is changed from regular to lvm. If I do a manual lvm install, it works, so this appear to be a problem interpreting that preseed directive.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1653759 Title: When run with an lvm preseed, ubiquity attempts to install grub to /dev/mapper To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1653759/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs