Same problem with a Dell PowerEdge R720, video card Matrox Electronics Systems Ltd. G200eR2 I try many ways but no one can be work fine with the ubuntu 14.04 , when i google the G200eR2's driver, i found a solution with this card, remove the mga driver!
sudo apt-get remove xserver-xorg-video-mga it will remove the xserver-xorg-video-mga and xserver-xorg-video-all then reboot now the window not slowly, and screen only has a 800x600 @75hz , but it work fine i hope this way can help other people -- 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/1316035 Title: matrox g200eR2 is unclaimed in 14.04 Status in xorg-server package in Ubuntu: Confirmed Bug description: On a certified Dell PowerEdge T620 server (http://www.ubuntu.com/certification/hardware/201207-11426/) The matrox video card is not recognised: lspci | grep VGA 0a:00.0 VGA compatible controller: Matrox Electronics Systems Ltd. G200eR2 lshw -C display *-display UNCLAIMED description: VGA compatible controller product: G200eR2 vendor: Matrox Electronics Systems Ltd. physical id: 0 bus info: pci@0000:0a:00.0 version: 00 width: 32 bits clock: 33MHz capabilities: pm vga_controller bus_master cap_list configuration: latency=64 maxlatency=32 mingnt=16 resources: memory:d8000000-d8ffffff memory:deffc000-deffffff memory:de000000-de7fffff Thus xserver is not hardver accelerated. Also /dev/dri and /dev/dri/card0 is missing. kernel module mga is not loaded, although if i manually load by modprobe it works fine modprobe mga lsmod | grep mga mga 40811 0 drm 302817 1 mga To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1316035/+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
