You have some problems with the rom data on your graphics card. Add the line
Option "useROMData " "False" to the "Device" section on your /etc/X11/xorg.conf . You can edit it typing the command sudo gedit /etc/X11/xorg.conf in the terminal (you'll find that in Applications->Accesories). The "Device" snippet will look something like that after the edit: Section "Device" Identifier "Configured Video Device" Option "useROMData " "False" EndSection -- no working driver for sis 671/771 video cards https://bugs.launchpad.net/bugs/301958 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-sis in ubuntu. _______________________________________________ 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