*** This bug is a duplicate of bug 1069133 ***
https://bugs.launchpad.net/bugs/1069133
thanks a lot
after purge the ppa xorg all works well and the upgrade completed without issue
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*** This bug is a duplicate of bug 1069133 ***
https://bugs.launchpad.net/bugs/1069133
Reviewing the files from your upgrade attempt you seem to have enabled a
PPA that provides Xorg packages. This will prevent the upgrade as that
PPA contains different versions of packages essential to