After working a while the processes names disappeared again. Looking a bit more carefully I found a huge icon for pgAdmin this is possibly messing up the Process Name column (attachment below).
Eventually, this might all boil down to an icon scaling method failing. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gtk3-engines-unico in Ubuntu. https://bugs.launchpad.net/bugs/1458135 Title: Process names in GNOME System Monitor are gone in Ubuntu 15.04 Status in gtk3-engines-unico package in Ubuntu: Confirmed Bug description: Please see http://askubuntu.com/questions/625965/process-names- missing-in-system-monitor for the screenshot, it says everything. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk3-engines-unico/+bug/1458135/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

