You appear to have the 'oibaf' PPA installed which commonly causes graphics problems, and might be the problem here too.
To remove all doubt, please uninstall that PPA using the 'ppa-purge' tool. Then if you experience any more problems please open new bugs for them.
You appear to have the 'oibaf' PPA installed which commonly causes graphics problems, and might be the problem here too.
To remove all doubt, please uninstall that PPA using the 'ppa-purge' tool. Then if you experience any more problems please open new bugs for them.