Comment 29 for bug 1432171

i had the same problem with simply a black screen and 'starting version 219'

This is how i fixed it hope it works for others...

I think the problem happened during the orginal update so i rebooted and went into my bootloader (got there by pressing f12 but for some it may be shift'), chose advanced options and loaded an earlier version of ubuntu. Then i did the usual sudo apt-get update && upgrade which fixed the problem.

A very simple fix but hopefully it will help others out