Having the same problem with debian, it might not be ubuntu related. I have checked all the scsi*.udev packages and so far failed to find the mpt2sas. Solution I used was to extract the /lib/modules/<kernelversion>/kernel/drivers/scsi/mpt2sas/* and place them in the initrd.gz file.
Note: I use PXE booting so changing the initrd file was relatively quick. Note: last installer checked used kernel 2.6.30 -- Support for DELL H200/H700/H800 SAS cards is missing in the CD/DVD installer for Lucid (mpt2sas) https://bugs.launchpad.net/bugs/530361 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs