Tried to upgrade my ubuntu 14.04 on Dell XPS 13 Developer Edition

[Mostafa Najafi]

I tried to upgrade my ubuntu from 14.04 on a Dell XPS 13 Developer edition. It gave me the error that it couldn't be done. And none of the suggestions applied to me.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-91.138-generic 3.13.11-ckt39
Uname: Linux 3.13.0-91-generic x86_64
NonfreeKernelModules: snd_hda_codec_generic wl snd_hda_controller
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sun Jul 3 01:38:09 2016
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-20140620-0
InstallationDate: Installed on 2015-12-12 (203 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20140620-04:25
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-07-03 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2015-12-12T13:38:33.794184

[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 package version numbers greater than the release to which you are upgrading. You can revert the PPA by installing the ppa-purge package from the official Ubuntu archive and then running 'sudo ppa-purge oibaf'. After that you try upgrading and again and if it still fails open a new bug report. Thanks and good luck!