My laptop PC is fairly old and running Debian wheezy. Though it's not powerful, I am trying to run Xen 4.1. At my first trial, Xen dom0 kernel itself launched without a trouble, but just after the X server started the display was filled with textual black and white patterns and lost reaction to keyboard and mouse input. I got disappointed and kept away from Xen for a while. Today, I tried again Xen 4.1 following the "Google Teacher"'s work around for some kinds of Intel's integrated video controller. Before launching dom0, I added the following setting to /etc/X11/xorg.conf: Section "Device" Identifier "myvideodevice" Driver "intel" Option "AccelMethod" "sna" EndSection After I checked that the setting is actually effective by restarting X server and looking into X server's log messages, I reboot the system and launched dom0. As before, the display is filled with the same