Re: nvidia 100.14.19 + ipw3945: system freezes
you appear to be having almost the exact same problem as me! I too have an HP laptop with ipw3945 driver & nvidia xid lockups. Please let me know if you develop any solution. My problem occurs nearly 0% of the time unless I use desktop compositing via beryl or compiz (then its produceable almost always within 24 hours of use).
irqpoll, noapic, nolapic, all don't work. IIRC, even nosmp doesn't fix the problem, though I may have to retest that. I remember trying just about everything mentioned on these forums at least once. Do the errors still happen for you if the ipw3945 driver is not loaded?
Thinking it was a kernel irq issue, I switched my latest kernel to tickless to greatly reduce the number of interrupts, though the stability level remains the same.