Except I didn't run from a terminal, I just looked in /var/log/syslog:
Oct 24 18:39:37 snowplow update-manager.desktop[7753]: Checking for a new Ubuntu release
Oct 24 18:39:37 snowplow update-manager.desktop[7753]: Please install all available updates for your release before upgrading.
I also have the same symptom.
Except I didn't run from a terminal, I just looked in /var/log/syslog:
Oct 24 18:39:37 snowplow update- manager. desktop[ 7753]: Checking for a new Ubuntu release manager. desktop[ 7753]: Please install all available updates for your release before upgrading.
Oct 24 18:39:37 snowplow update-