I also have this in Ubuntu Studio 14.04.4 LTS, if I am logged in as user1 and user2, I have setup automatic mounting of removable media in pcmanfm's preferences or thunar's preferences for user1, and if I am using user2 when I plug in a USB pen drive.
I also have this in Ubuntu Studio 14.04.4 LTS, if I am logged in as user1 and user2, I have setup automatic mounting of removable media in pcmanfm's preferences or thunar's preferences for user1, and if I am using user2 when I plug in a USB pen drive.