Стандартные вопросы:
1) целостность самого диска с Knoppix
2) загрузиться не с 4.02, а с какой-нибудь другой версии, может быть глюк конкретного ядра
3) если видюха не определилась корректно или определилась неправильно, то может XServer нестартануть, так и будет командная строка. Возможно тут надо копать. У тебя пишется какое-нибудь сообщение об ошибке при запуске XServer ?
Вот что пишут на сайте
http://www.knoppix.net:
(кто не знает английского - сам себе злобный буратино :-)
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Q: My graphics card doesn't work!
A: It may be that very new (or exotic) graphics cards are not in the hardware database yet. These will still usually work under Linux! You can type
knoppix xmodule=vesa
or
knoppix xmodule=fbdev
at the first boot screen, and the initial un-accelerated XFree86 modes will produce a usable screen. Version 31-01-2002 and later have a frame buffer boot option (especially for older notebooks) fb800x600 (instead of typing in knoppix), which uses a resolution of 800x600 pixels in frame buffer mode. Regardless of whether these workarounds are successful or not, support can be built into the next version of KNOPPIX more quickly if the PCI numbers of the graphics card along with a description can be sent to us via mail ("lspci ; lspci -n").
If you have an onboard chip like: Intel® 82865G some users related that shared memory size should be fixed to 8Mb (look at your mainboard Bios).
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Q: Auto configuration doesn't work on my computer, or the computer hangs at boot. What should I do?
A: It might work if portions of the auto configuration are skipped. This can be specified with "knoppix noscsi" or "knoppix nopcmcia". If the problem can be identified -> please send the exact error message and when possible a proposed solution using the web form at
http://www.knopper.net/kontakt/ ! Sometimes the output of "lspci ; lspci -n" is very helpful, especially if the problem involves incorrectly identified graphics cards.