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 Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1213338 Title: Displaylink slow graphic performance on Ubuntu 13 Status in “compiz” package in Ubuntu: New Status in “xorg-server” package in Ubuntu: New Bug description: Hello, When I connect the diaplay link (DVI) and I activate the screen in xRandr, the graphic performance slow down, the mouse movement are jerky and the mouse cursor blink on all screen, when I move a window, is also not fluid. When I desactivate the screen in xRandr, but I keep the displaylink connected, everything work fine. I also tried to take all graphic effect and desktop in compiz setup, stay the same. I'm running Ubuntu 13.04 64 bits and the Kernel 3.11.0-031100rc5-generic I tried also with Kernel 3.10 and 3.9. My Graphic card is a Intel. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1213338/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
