I have also encountered this problem with Grub 0.97 on Ubuntu 6.10 Edgy Eft. The remote terminal doesn't get anything from Grub. Nothing is displayed until getty is running on ttyS0. Specifying the port with --unit or --port has no effect.
-- serial console support broken https://launchpad.net/bugs/32904 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs