How to debug a misbehaving usb device (DYMO LabelManager PC)?

[Torfinn Ingolfsen]

On Sat, 09 Jul 2011 22:29:22 +0200
Hans Petter Selasky <hselasky at c2i.net> wrote:

> Could you try to reset it?
> 
> usbconfig -d X.Y reset 

root at kg-v7# usbconfig -d 0.3
ugen0.3: <product 0x0011 vendor 0x0922> at usbus0, cfg=255 md=HOST spd=LOW (1.5Mbps) pwr=ON
root at kg-v7# usbconfig -d 0.3 reset
root at kg-v7# usbconfig -d 0.3
ugen0.3: <product 0x0011 vendor 0x0922> at usbus0, cfg=255 md=HOST spd=LOW (1.5Mbps) pwr=ON
The light on the device breiefly changed from green to red before going back to green ,ad the was it.
No new messages in /var/log/messages either:
root at kg-v7# tvlm
Jul  9 22:21:35 kg-v7 kernel: usbd_req_re_enumerate: addr=3, set address failed! (USB_ERR_STALLED, ignored)
Jul  9 22:21:35 kg-v7 kernel: usbd_setup_device_desc: getting device descriptor at addr 3 failed, USB_ERR_STALLED
Jul  9 22:21:35 kg-v7 kernel: usb_alloc_device: Failure selecting configuration index 0:USB_ERR_STALLED, port 4, addr 3 (ignored)
Jul  9 22:21:35 kg-v7 kernel: ugen0.3: <vendor 0xc000> at usbus0
Jul  9 22:21:35 kg-v7 kernel: ugen0.3: <vendor 0xc000> at usbus0 (disconnected)
Jul  9 22:21:36 kg-v7 kernel: usb_alloc_device: Failure selecting configuration index 0:USB_ERR_STALLED, port 4, addr 3 (ignored)
Jul  9 22:21:36 kg-v7 kernel: ugen0.3: <vendor 0x0922> at usbus0
Jul  9 22:24:24 kg-v7 kernel: ugen0.3: <vendor 0x0922> at usbus0 (disconnected)
Jul  9 22:24:41 kg-v7 kernel: usb_alloc_device: Failure selecting configuration index 0:USB_ERR_STALLED, port 4, addr 3 (ignored)
Jul  9 22:24:41 kg-v7 kernel: ugen0.3: <vendor 0x0922> at usbus0

-- 
Torfinn