Kernel panic - not syncing: Attempted to kill init!

[pegasus]

Hello,
When booting from 5.3.1 DVD on my Thinkpad 600x, I receive an error

Kernel panic - not syncing: Attempted to kill init!
Clocksource tsc unstable (delta = 286584614 ns)
Time: pit clocksource has been installed.

Please suggest what I should do.

This machine can boot with the previous Knoppix CD (5.1.1) or Windows. This 5.3.1 DVD also works fine on the other machine (Thinkpad T61).

Thank you.

[pegasus]

Problem solved

need to specify knoppix acpi=force

Anyway, appreciate if anyone can help explain.

The machine booted but KDE crashed at the end. I will look at it and may post a separate subject later.