I disabled the specific extension(s) included in extmod by editing xorg.conf - commenting out the line that usually loads extmod and replacing it with a SubSection entry, including the option to leave out the specified part. Like this:
in file /etc/X11/xorg.conf : # Load "extmod" SubSection "extmod" Option "omit sync" EndSubSection -- Switch User freezes at blank screen https://bugs.launchpad.net/bugs/112518 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs