upgrade from 12.04 or 13.10 to 14.04 not possible due to python3 from blender PPA

[Michael]

when upgrading to the 14.04 the dependencies cant be calculated

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.13
Uname: Linux 3.13.3 x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Wed May 28 19:20:26 2014
EcryptfsInUse: Yes
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1401296683
 com.ubuntu.update-manager show-details true
 com.ubuntu.update-manager window-height 522
 com.ubuntu.update-manager window-width 653
InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: update-manager
Symptom: ubuntu-release-upgrader-core
UpgradeStatus: Upgraded to precise on 2014-05-28 (0 days ago)
VarLogDistupgradeTermlog:

[Brian Murray (brian-murray)]

You've installed python3 packages from a PPA which is preventing the upgrade, as the package versions are greater than those in Trusty, to 14.04.

libpython3.4 3.4.0-2ubuntu1irie1~precise1 1
libpython3.4-minimal 3.4.0-2ubuntu1irie1~precise1 1
libpython3.4-stdlib 3.4.0-2ubuntu1irie1~precise1 1

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[JohnBandaru (john-bandaru)]

Update:

just removing the python3 package didn't work for me . Have to remove the other obsolete packages using "sudo apt-get -y autoremove "Package name here without quotes" .

how I got the obselete package list? did this:

$ cat /var/log/dist-upgrade/main.log | grep Obsolete >> /home/" my A/c user-name without quotes" /desktop>obseletepkgs.txt

Then did a update again (sudo apt-get -y update), then ran the dist-upgrade from the update GUI tool. (for some reason the upgrade didn't start from the command "sudo do-release upgrade" in-spite of my multiple tries , even after reboot/restart.

A window then popped up asking me if I wanted to continue with the upgrade to 14.04 now or later and gave me a time period it would take to update over my net connection and I clicked start ...its right now running on my laptop (typing this from my desktop) .

will update result - if the upgrade is successful or not.

FYI & necessary action/updation in the relevant areas by the Proper expert(s).

forgive me for my mistakes if any - i'm a newbie to linux and would like to get all the help i can get. thxs all.

[JohnBandaru (john-bandaru)]

correction: to:

this is wrong : cat /var/log/dist-upgrade/main.log | grep Obsolete >> /home/" my A/c user-name without quotes" /desktop>obseletepkgs.txt

this is the right one: cat /var/log/dist-upgrade/main.log | grep Obsolete >> /home/" my A/c user-name without quotes" /desktop/obseletepkgs.txt

sorry
-jb

[JohnBandaru (john-bandaru)]

also i removed the other ppas using ppa-purge. got he list from the Ubuntu software center .