"pipe is stalled" (OSX)

GNU Radio
1

I’m using the USRP, the basic RX. RXA, and a wire and antenna in the
RX-A on
the RX daugherboard. OSX.

bash-3.2$ ./usrp_print_db.py
usb_control_msg failed: usb_control_msg(DeviceRequestTO): pipe is
stalled
usb_control_msg failed: usb_control_msg(DeviceRequestTO): pipe is
stalled
usb_control_msg failed: usb_control_msg(DeviceRequestTO): pipe is
stalled
RX d’board A: Basic Rx
RX d’board B:
TX d’board A:
TX d’board B:

I’ve looked up other problems, but they seem to be related to libusb (I
have
.0.12) or not having usb2 (I’m on a 2nd gen macbook 2). There doesn’t
seem
to be anything more recent. Anyone have any idea?

I can use things like usrp_fft.py but I always get that message first.
I’d
think nothing of it, except that I can’t seem to get radio receiving to
work, so I was curious if this could be the reason.

2

Those are all normal for running USB on OSX using LIBUSB 0.1.X.
Sometimes you get those errors, and sometimes you don’t … depends on
many parameters, and I’ve never found a correlation – though
admittedly I haven’t tried very hard :wink:

From the printout of “usrp_print_db.py”, it looks like your USRP is
correct attached and GNU Radio installed correctly. Yay!