Re: [Discuss-gnuradio] usrp issue

[Thomas Tsou]

On Wed, Apr 7, 2010 at 8:03 AM, voipas <address@hidden> wrote:
> Hello,
>
>   I've problem with USRP. Since I've upgraded my Ubuntu to 9.0.4 - usrp
> doesn't work:
> /usr/local/share/gnuradio/examples/usrp/usrp_benchmark_usb.py
> Exception RuntimeError: 'maximum recursion depth exceeded while calling a
> Python object' in <type 'exceptions.AttributeError'> ignored
> Testing 2MB/sec... usrp: failed to write fpga hash slot
> usb_control_msg failed: error sending control message: Protocol error
> usb_control_msg failed: error sending control message: Protocol error
> usb_control_msg failed: error sending control message: Protocol error

Protocol error from USB generally indicates a low level error. Do you
have any other USB devices attached (hubs, webcams, etc.)?

  Thomas