*** 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 Ubuntu. The
page, https://launchpad.net/~xorg-edgers/+archive/ppa, contains details
on to how to revert to the official Xorg packages for the xorg-edgers
PPA. Instructions for reverting to official Xorg packages should be
similar for the PPA that you have enabled.
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: New => Invalid
** Tags added: ppa xorg-edgers-ppa
** This bug has been marked a duplicate of bug 1069133
Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg from ppa
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https://bugs.launchpad.net/bugs/1498055
Title:
When I try to upgrade Ubuntu 14.10 to 15.04 an error signal appear.
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