USB serial cable: unable to enumerate

[Arun Thomas]

On natty, when I connect my monoprice USB-to-serial cable to my laptop, I receive the following errors in dmesg:

[ 368.087954] usb 3-3: new full speed USB device using xhci_hcd and address 2
[ 368.088332] usb 3-3: Device not responding to set address.
[ 368.298058] usb 3-3: Device not responding to set address.
[ 368.507563] usb 3-3: device not accepting address 2, error -71
[ 368.627640] usb 3-3: new full speed USB device using xhci_hcd and address 3
[ 368.628045] usb 3-3: Device not responding to set address.
[ 368.837770] usb 3-3: Device not responding to set address.
[ 369.047226] usb 3-3: device not accepting address 3, error -71
[ 369.167272] usb 3-3: new full speed USB device using xhci_hcd and address 4
[ 369.167709] usb 3-3: Device not responding to set address.
[ 369.377408] usb 3-3: Device not responding to set address.
[ 369.586909] usb 3-3: device not accepting address 4, error -71
[ 369.706936] usb 3-3: new full speed USB device using xhci_hcd and address 5
[ 369.707388] usb 3-3: Device not responding to set address.
[ 369.917101] usb 3-3: Device not responding to set address.
[ 370.126561] usb 3-3: device not accepting address 5, error -71
[ 370.126612] hub 3-0:1.0: unable to enumerate USB device on port 3

This cable has a Prolific 2303 and is supposed to work under Linux.

Here's lsusb from my laptop:

Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0408:2fb1 Quanta Computer, Inc.
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Monoprice Link:
http://www.monoprice.com/products/product.asp?c_id=103&cp_id=10311&cs_id=1031104&p_id=3726

I will try to test the cable on other machines to rule out the possibility that the cable is bad.

[Arun Thomas (arun-thomas)]

Here's a usbmon log that captures the USB traffic when I plug in the cable.

[Arun Thomas (arun-thomas)]

Just as an FYI, I have the same problems when running the ubuntu-oneiric git tree.

[Arun Thomas (arun-thomas)]

This appears to be a problem with the cable itself. Sorry for the noise. Marking this bug as invalid.