Find a way to workaround. I have a PowerEdge R620 which installed a Ubuntu 12.04 TLS. And I found the screen refreshing became very slow. So I share the same issue with yours.
First,then we have to install vesa driver: sudo apt-get install xserver-xorg-video-vesa Then, for some of the Ubuntu release don't have a xorg.conf, so I have to generate one with following steps: 1.switch to console mode: Alt+Ctrl+F1 2.kill x server: sudo service lightdm stop 3.generate new xorg.conf file: sudo X -configure -- this will create xorg.conf.new file in your current dir 4.rename and move: sudo mv xorg.conf.new /etc/X11/xorg.conf 5.open /etc/X11/xorg.conf, replace the graphic driver of 'mga' with 'vesa'.t 6.return to GUI: sudo start lightdm ** Attachment added: "Capture.PNG" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1316035/+attachment/4317967/+files/Capture.PNG -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1316035 Title: matrox g200eR2 is unclaimed in 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1316035/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
