Hi Yann,
I was able to upgrade after runing this command
sudo apt-get remove --purge ppa:xorg-edgers/ppa
Steve
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https://bugs.launchpad.net/bugs/1069133
Title:
Get upgrade error 12.04
Public bug reported:
Could not determine the upgrade
An unresolvable problem occurred while calculating the upgrade.
This can be caused by:
* Upgrading to a pre-release version of Ubuntu
* Running the current pre-release version of Ubuntu
* Unofficial software packages not provided by
Public bug reported:
says it cant determine my system to upgrade from 13:04 to 13:10
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: ubuntu-release-upgrader-core 1:0.192.13
ProcVersionSignature: Ubuntu 3.8.0-32.47-generic 3.8.13.10
Uname: Linux 3.8.0-32-generic x86_64
ApportVersion: