I’ve upgraded kernel 220.127.116.11-0.2-default to 18.104.22.168-0.1.1 on openSUSE 11.1. Before I tried to upgrade to 22.214.171.124-0.3-default where I encountered the same issue. After reboot it can not find the modules for 126.96.36.199-0.2-default which puzzled me to no end. Now I have found that the /boot which is on separate partition of ext2 type is not mounted. The mount command does not recognize ext2 and xfs anymore. Clearly the initrd does not have the right modules.
Since this is standard zypper up process I would expect this to work without issues since it has worked until the 188.8.131.52-0.2-default kernel without issues.
Has something changed with the last 2 kernel versions that requires some extra actions from me and if so what do I have to do.