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[Discuss-gnuradio] USRP1 "hangs", benchmark doesn't continue

From: Alexander List
Subject: [Discuss-gnuradio] USRP1 "hangs", benchmark doesn't continue
Date: Tue, 09 Mar 2010 01:10:15 +0100
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* I've installed the latest and greatest gnuradio from git, everything
compiled fine.

* I have a pre-500 USRP1, and fixed the wiring of the clock to the four
daughterboard sockets.

* I've been running gnuradio on this hardware ~2 weeks ago successfully.

Now, when I try to run anything that connects to the USRP, it just
"hangs". It downloads the firmware (blinking gets slower), it identifies
my two WBX boards correctly, but:

$ /opt/gnuradio/HEAD/share/gnuradio/examples/usrp/usrp_benchmark_usb.py
Testing 2MB/sec...

...and that's where it ends. It just hangs there.

If I try usrp_oscope.py on a local radio station, I see *nothing*.

I also tried usrp_wfm_rcv_nogui.py:

$ usrp_wfm_rcv_nogui.py -f 100.6e6 -O plughw:0,0 -g 30

When I strace the process, I only see

select(0, NULL, NULL, NULL, {0, 2000})  = 0 (Timeout)
select(0, NULL, NULL, NULL, {0, 4000})  = 0 (Timeout)
select(0, NULL, NULL, NULL, {0, 8000})  = 0 (Timeout)
select(0, NULL, NULL, NULL, {0, 16000}) = 0 (Timeout)

Any hints?


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