After issuing:
update-manager
And then clicking "Upgrade…" in Software Updater the terminal displays "Checking for a new Ubuntu release" but does not show the dialog to proceed. Which means I am unable to upgrade. PS -UX shows:
trevor 4406 1.8 0.0 4444 800 pts/3 S+ 11:45 0:03 /bin/sh -c /usr/bin/pkexec /usr/bin/do-release-upgrade --frontend=DistUpgradeViewGtk3
Any suggestions?
I'm using Ubuntu 14.10 in a VMWARE virtual machine on Windows 7.
Best Answer
You're lucky if you can even update a current install - I haven't been able to run the security updates on mine for a few days now, timeout/connection problem on two internet connections.
Apparently the 15.04 is too popular right now :) If you go to Settings... in the upgrade dialog, and in Software-sources set the server to Main Server or a server near you, it may work better.