Lamont R. Peterson wrote:
It could be a bug in the BIOS. I recently dealt with some AMD64 X2
boxes
(from Alienware) that had a really big issue similar to this because of the
way the BIOS was configuring (or not properly configuring) the APIC. If we
ran an SMP kernel on those boxes under those conditions, the delay loop was
seriously miscalibrated and we would see the clock stall & jump. It also
made it extremely difficult to type as the briefest of touches to a key would
cause anywhere from 2-20 keypresses to register, even after we had turned the
keyboard repeat rates all the way down.
Sounds familiar:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=55223
-Andy