Great, I'm glad you were able to upgrade. Thanks for pointing at that
script too.
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: Incomplete => Invalid
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thank you
Despite having purged the PPA's previously. I needed to reinstall the
PPA's and then re-purge them. That solved my issue.
FWIW I used this bash script to find my 'installed' PPA's.
find /etc/apt/sources.list.d -type f -name "*.list" -print0 | \
while read -d $'\0' file; do awk -F/
You do have some X packages installed from another PPA (paulo-miguel-
dias-ubuntu-mesa-bionic.list) and those are likely causing a failure to
calculate the upgrade. Please try purging that PPA and trying the
upgrade again.
** Changed in: ubuntu-release-upgrader (Ubuntu)
Status: New => Incom
