I found one thread which says following go to alt-f2 run gconf-editor go to apps/evolution/calendar/notify
unselect notify with tray i did this but not yet restarted the computer so the pop ups are still annoying me let me try restarting ubuntu -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to evolution in Ubuntu. https://bugs.launchpad.net/bugs/1142511 Title: Calendar Authentication requests password in Ubuntu 12.10 and 13.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/evolution/+bug/1142511/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs