On Thu, 5 Nov 2009, Jesse Barnes wrote: > On Thu, 5 Nov 2009 11:13:52 -0500 (EST) > Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > > > If you're sure it's not a hardware issue, and you don't want to go > > > > through a bisection search just yet, try doing this: Prevent > > > > ehci-hcd from loaded automatically during bootup. When you then > > > > load it manually, does the same thing happen? > > > > > > Ok, I'll give that a try. > > > > If you can reproduce the problem at a time later then initial > > startup, the next step is to collect a usbmon trace (see > > Documentation/usb/usbmon.txt). > > I can reproduce the problem with just uhci_hcd loaded, so I guess it's > not a low/high speed handoff problem? This must be on the older computer, right? The newer chipset didn't include any UHCI controllers. I can't tell what's going on without seeing the usbmon output. I might not be able to tell even _after_ seeing the output -- but at least it's a place to start. Alan Stern -- 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
