Here the workaround i use to pass this problem. We need to use app called Synaptic to remove all packages that is considered as unofficial. Steps: 1. install synaptic with “sudo apt-get install synaptic” 2. open synaptic app and find the list of obsolete packages by clicking on the “Status” button and selecting “Installed (local or obsolete)”. 3. select all of the obsolete packages and mark them for removal, then click on Apply button. (Note: Your important apps my listed as obsolete packages, so make sure to backup the app data if posible. You my also need to keep the list by using screenshot,so you can install them back later after upgrade).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1876395 Title: upgrade 18.04.04 LTS to 20.04 LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1876395/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
