On Thu, 22 Aug 2013, Joseph Yasi wrote: > Here's one from the xhci machine where the card reader is having the > problems. The ehci machine doesn't have a power supply right now. I'll > try to cobble it together tonight or over the weekend to get a log > there. I don't see anything especially suspicious. It just looks like the card reader's firmware crashes every now and then, sending back STALL in response to every packet on the bulk-IN endpoint. It may be an electrical issue -- insufficient power or something like that. Or it could be a bug in the host controller hardware. The only way to tell for sure whether the problem lies in the device or in the computer is to use a USB bus analyzer. 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
