For quite sometime I was trying to load Ubuntu 12.04 LTS beta1 and beta2 to my Asus Eee PC 1101HA with 1.34 Ghz Intel Atom processor and 1 GB DDR3 RAM. Somehow the distro would get installed but not boot to a GUI due to GMD500.
Either it won't load or even if it loads the display would be half the screen.
Finally I found a way to get around. Once the black screen comes press Ctrl - Alt - F2,