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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1458135 Title: Process names in GNOME System Monitor are gone in Ubuntu 15.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk3-engines-unico/+bug/1458135/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs