I just ran into the same problem after adding a displaylink device (EVGA UV+).
Previous configuration: 9.04 Ati card with 2 monitors running an extended desktop. Moving a window to the right monitor did not make it disappear from the taskbar on the left monitor. setup: xrandr --output CRT1 --auto --right-of DFP1 Now i tried adding a 3rd independent screen using the USB converter, and while everything else works fine i suddenly have the same problem: moving a window from the left to the right monitor makes it disappear in the taskbar. ** Attachment added: "xorg.conf" http://launchpadlibrarian.net/32488483/xorg.conf -- Using extended desktop, application disapears from taskbar. https://bugs.launchpad.net/bugs/298651 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs