Thanks for the bug report. The first problem I can see here is that you
are using graphics packages from the 'oibaf' PPA which are unsupported
and often buggy.
Please remove that PPA using 'ppa-purge', reboot, and then if the
problem continues please open a new bug.
** Changed in: xorg-server
Thank you for taking the time to report this bug and helping to make
Ubuntu better.
Bug reporting is mostly about finding & fixing problems thus preventing
future users from hitting the same bug.
I suspect a Support site would be more appropriate, eg.
https://answers.launchpad.net/ubuntu. You
