P.s. In step 9 try switching using ctrl+alt+f8, ctrl+alt+f9, ctrl+alt+f7.
Eventually all the screens become blank. I think that it's because the secondary login user gets placed in ctrl+alt+f9, where as before it used to be placed in ctrl+alt+f8, -- 6.10: When using multiple user accounts simultaneously (user + admin account) the entire OS freezes or the UI becomes unavailable for both user accounts and I'm forced to ctrl+alt+f1 and sudo shutdown -r Now https://launchpad.net/bugs/68546 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs