On Wed, Jan 20, 2010 at 03:20:46PM -0500, Alan Stern wrote: > Okay, this means that something else is affecting the IRQ line. Yep. I went and disabled irq5 on the LPC bus, and that didn't help. > > Interestingly the number of interrupts listed in /proc/interrupts is > > exactly 300000. > > That's probably because the kernel disabled the IRQ after 100000 > unhandled interrupts, and re-enabled it each time a new device was > registered for that IRQ. Certainly seems to be the case. > Or you could just stop using USB on the old box. :-) Well I just tried another box, and same thing. If I boot with 'irqpoll' then everything seems fine. Any idea how I can figure out why irqpoll makes it happy? Does it give any reports anywhere about misrouted irqs? -- Len Sorensen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html