The issue here is that compiz prefers pageflips (quite rightly for igfx) which for udl means that we need to push the entire display over the slow usb link (and requiring a slow readback) on each update (instead of just the damaged region) -- a write magnification issue.
** Package changed: xrandr (Ubuntu) => xorg-server (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1213338 Title: Displaylink slow graphic performance on Ubuntu 13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1213338/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs