I found out what *my* problem was. I am trying to boot from this raidset, and the script that runs dmraid -ay to activate the raidset was in /usr/share/initramfs-tools/scripts/local-top/dmraid. I needed to copy this into local-premount and regenerate my initrd. After that my machine would boot without issues.
Thanks to all for info and help from this page. Edgy running perfectly on SI3112 raid0 for me. -- DMRAID stopped to work in kernels > 2.6.15 https://launchpad.net/bugs/54246 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs