update to 15.04 failed

[jim elliott]

no sure what to do . it said unable to caculate update. i ran grep broken and it came back x-server-xorg-video-noveau as a broken pkg. I thing i am runing nvidia driver pkg

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-release-upgrader-core 1:14.10.10
ProcVersionSignature: Ubuntu 3.13.0-49.83-generic 3.13.11-ckt17
Uname: Linux 3.13.0-49-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.7-0ubuntu8.4
Architecture: i386
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Tue Apr 28 07:18:26 2015
InstallationDate: Installed on 2014-03-07 (416 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 (20120817.3)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to utopic on 2015-04-28 (0 days ago)
VarLogDistupgradeTermlog:

[Brian Murray (brian-murray)]

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.