In order, i've attempted:
sudo apt-get updatesudo apt-get upgradesudo apt-get dist-upgradesudo do-release-upgrade
After running the last step, it resulted in Please install all available updates for your release before upgrading. i also tried the above in order with just apt and not apt-get (per a prior post on askUbuntu)...i get the same message after getting to step 4. i tried running sudo apt autoremove after the upgrade step, but that didn't do it. i tried removing packages that weren't able to be upgraded after running step 2, but that didn't do it (there was a dotnet-sdk that couldn't be upgrade). notify is set to any new version of ubuntu. also tried running steps 1-3 then sudo update-manager, but i get the same message. my release from lsb_release -a is
Dist ID - UbuntuDesc - Ubuntu 20.04.1 LTSRelease - 20.04Codename - focal
my 3rd party sources are:
- http://archive.canonical.com/ubuntu
- https://linux.teamviewer.com/deb
- http://dl.google.com/linux/chrome/deb/
EDIT:
disabling teamviewer and chrome in my 3rd party sources resolved the error.