Hello,
Try one of the below booting options (from knoppix-cheatcodes.txt):
Code:
### Graphics ###
knoppix screen=1280x1024 Use specified Screen resolution for X
knoppix hsync=95 Use 95 kHz horizontal X refresh rate
knoppix vsync=60 Use 60 Hz vertical refresh rate for X
knoppix xmodule=ati|fbdev|intel|mga Use specified Xorg-Module (1)
knoppix xmodule=nv|radeon|savage|s3 Use specified Xorg-Module (2)
knoppix xmodule=vesa|svga|vmware Use specified Xorg-Module (3)
knoppix norandr Disable Xorg RandR feature (may be
useful if wrong resolution was detected)
knoppix noddc Don't query monitor for resoution
knoppix no3d|nocomposite Don't use Xorg Composite extension
knoppix vga=normal No-framebuffer mode, but X
fb1280x1024 Use fixed framebuffer graphics (1)
fb1024x768 Use fixed framebuffer graphics (2)
fb800x600 Use fixed framebuffer graphics (3)
Kind regards,
Eric