No video on Lenovo S12 netbook

Any hints on getting Knoppix to work on a Lenovo Ideapad S12 with VIA VX800 Chrome 9 video? During boot, just after chipset identification, the display goes black at the point when the boot sequence log would go into graphics mode. The system is running, because if I wait long enough I can here the audio announcing the startup sequence. Startup options I've tried with no help: no3d noacpi acpi=off screen=1280x800; screen=1280x768 vsync=60 xmodule=vesa nomodeset fb1280x800; fb1280x768

[answering my own question] And the answer is: nofb (you have to disable framebuffer mode with wither "nofb" or "vga=normal")