Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: New => Confirmed
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It would be useful if that message or something similar to what m-hample
stated was displayed. It would also be useful to provide a link to the
official repository names in the error.
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I got past the issue by removing all the packages listed here for my distro.
Upgrade is now commencing.
https://www.ubuntuupdates.org/ppa/xorg-edgers?dist=bionic=87=1
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I assume that the message that you are missing should read
This was likely caused by:
Unofficial software packages not provided by Ubuntu
Please use the tool 'ppa-purge' from the ppa-purge
package to remove software from a Launchpad PPA and
try the upgrade again.
This is the