On Sun, 28 Jul 2013, James Stone wrote: > On Sat, Jul 27, 2013 at 6:45 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > On Sat, 27 Jul 2013, James Stone wrote: > > > >> OK. So this seems to have solved the starting jack at low latencies > >> problem, but I am still getting sporadic cannot submit urb (err = -18) > >> under normal use. Will try to add some more info to the #1191603 > >> report if I can get it to happen while logging IRQ. > > > > Do these errors occur at the start of a session or somewhere in the > > middle? > > > > If they occur in the middle, they indicate possible underruns. The > > patch below will greatly reduce the number of these errors (probably to > > the point where you don't see any at all), although it won't fix > > possible underruns. > > > > OK - this patch didn't help - still seeing these cannot submit urb > (err = -18) errors coming up at random times (this time while the > computer was idling). Do you think you can get a usbmon trace showing one of those errors? Or would the trace file end up being hopelessly large? 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
