I have similar problems using xrandr on a laptop with a dual display LCD 32" TV under Ubuntu 14.04 with Kernel's 3.13.24, 3.13.29, 3.15.1, 3.15.2, 3.15.3, 3.15.4 and 3.15.5. A new Kernel seems to come out each week addressing various problems so I have held off reporting the glitches.
-- 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 “xorg-server” package in Ubuntu: Expired 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/xorg-server/+bug/1213338/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
