On Thu, 13 Sep 2012, Sarah Sharp wrote: > > I plugged rdf8 reader into usb3 port, mounted it (vfat), > > cat garbage > out.bin , at the end ls showed a bit over 252000000 byte file, > > then empty dir listing (df showed input/output error). When mounted > > with rdf8 reader plugged into usb2 port the dir listing was intact, > > like it did not manage to write anything when in usb3.. > > Hi Sami, > > I'm back from vacation and I took a look at your log. It seems like > your device works fine for a while, and then it doesn't respond to a > transfer. The usb-storage driver attempts to reset it, and the Set > Address command times out, which causes issues in the xHCI driver. It would be interesting to know why the device failed to respond to the transfer. Presumably the same sequence of commands would be sent for USB-2 and USB-3 connections (unless the drive uses UAS). Why would a command work at high speed but crash the device at SuperSpeed? And what was the offending command? A usbmon trace would help answer these questions. 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
