More data points. The raspi OS kernel has ROOT_NFS enabled which presumably handles the 'vers=<foo>' parameters. In our case that option is disabled and initrd scripts try to parse the kernel parameters and fall on their faces.
** Bug watch added: Debian Bug tracker #409272 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=409272 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1954716 Title: rpi nfsroot vers=4 not supported anymore? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1954716/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs