Same happend to me when I installed herd3 but the screen was NOT locked after I switched back to 7. (I installed Kubuntu destop i386)
-- Screen blanks, locks during install of herd 5 https://launchpad.net/bugs/89878 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
