Solved my problem. There were two partman- auto/init_automatically_partition lines in the default file://cdrom/preseed/ubuntu-server.seed preseed file (not in my initrd), I commented them out and now it works. I assume you could just remove this preseed file from the isolinux.cfg/txt.cfg kernel params and incorporate any needed lines into your initrd preseed.cfg.
# Suggest LVM by default. d-i partman-auto/init_automatically_partition string some_device_lvm d-i partman-auto/init_automatically_partition seen false ** Changed in: partman-auto (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1308281 Title: can't answer partman-auto/init_automatically_partition via preseed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/partman-auto/+bug/1308281/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs