*** 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 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 ppa:oibaf/graphics-drivers'. After that you can try upgrading
again and if it still fails open a new bug report. Thanks and good
luck!
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: New => Invalid
** Tags added: ppa xorg-oibaf-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/1921620
Title:
Unable to upgrade from 18.04 to 20.04, Could not calculate the upgrade
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