The same problem if you're trying to install Ubuntu over PXE.
Tested on ubuntu-12.04.3-desktop-amd64.iso and
ubuntu-12.04.3-alternate-amd64.iso images.
/casper.log contains: Trying nfsmount -o ro IPOFNFSSERVER:/some/path /cdrom ...
mount: Protocol not supported
With precise-desktop-amd64.iso from
*** This bug is a duplicate of bug 1191563 ***
https://bugs.launchpad.net/bugs/1191563
Looks like it can't resolve :i368 dependencies.
I've made:
dpkg --get-selections | grep lts
Find all :i368 packages and removed it with (in my case):
sudo apt-get remove libgl1-mesa-dri-lts-raring:i386
li
