On Mon, 5 Nov 2012, Jason J. Herne wrote: > I have a Seagate ST3000DM 3.0TB Sata Drive enclosed in a Vantec > NexStar CX USB 3.0/2.0 Enclosure. This enclosure/drive is not > properly recognized by Linux when plugged in via a USB 2.0 port. My > dmesg output, at first, seems like all is well. but then the drive > activity light starts flashing rapidly and never stops. After 20-30 > seconds I see a "reset high-speed USB device" message. The /dev/sdx > device node is created for the drive, but no sdxN nodes are created > and any program accessing the /dev/sdx node hangs. I have tried this > drive with 3 different computers all running Ubuntu 12.04 (kernel > 3.2.0-30-generic-pae) or Ubuntu 11.10 (kernel 3.0.0-12). I have also > tried the 3.7.0-rc4-next kernel. The problem persists on all of the > above kernels. > > It is worth noting that the drive is properly recognized by Windows 7 > running on the same hardware as my Ubuntu install. > > I am providing some output that I hope is useful for diagnosing the > problem. I can collect more if needed. I can also provide the raw > tcpdump capture file as saved by Wireshark. I don't understand much > of the trace I collected, but it seems to get interesting around Frame > 108: URB status: Remote I/O error (-EREMOTEIO) (-121). > Wireshark trace converted to text: > http://pastebin.com/aF845HY2 Wireshark's text format is very difficult to read and doesn't contain all the information. Could you post the raw pcap file? 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
