Comment 13 for bug 707755

Thank you for taking the time to report this bug and helping to make Ubuntu better.

The xorg logs shows that you are using the nvidia binary drivers. Is there any possibility that you can check if nouveau works correctly. You can boot into recovery mode and use jockey-text to enable/disable drivers. You can try removing /etc/X11/xorg.conf and try removing and reinstalling the driver from recovery mode.

Please also report apport information.

Please execute the following command, as it will automatically gather debugging information, in a terminal:
$ apport-collect BUGNUMBER
or if offline, you can use this command and then move the .bug file.
$ apport-bug --save /tmp/report.bug nvidia-current # or -96 -173 -180 depending on which you have installed

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.