Re: [Discuss-gnuradio] Software troubes - gr_vmcircbuf ...?

[Eric Blossom]

On Mon, May 11, 2009 at 10:51:47AM -0600, wallen wrote:
> On Fri, 2009-05-08 at 18:32 -0700, Eric Blossom wrote:
> > On Fri, May 08, 2009 at 02:04:59PM -0600, wallen wrote:
> > > I've been trying to get Gnuradio running with my USRP2, and am still
> > > having some troubles.  My computer is an older Dell Inspiron 5100 laptop
> > > running Debian (Lenny).  I've installed a D-Link DGE-660TD Gigabit
> > > Cardbus adapter, and have compiled what I believe is the most recent
> > > release of the code per the instructions in the README file.
> > > 
> > > I can find the USRP2 by running the find_usrps command, but oddly enough
> > > this occasionally segfaults.  So far what looks like the most intriguing
> > > error message I got when trying to run usrp2_fft.py.  This looks like:  
> > > 
> > >    usrp2_fft.py
> > >    usrp2: failed to enable realtime scheduling
> > 
> > Edit /etc/security/limits.conf and add this line:
> > 
> > @usrp  - rtprio 50
> > 
> > then logout and back in.
> 
> Well ... that doesn't seem to change anything.  I still get the same
> error if I try running as a regular user.  Running as root gives me
> different errors.  Running this as root after trying as a regular user I
> got:
> 
>    "/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py",
> line 
>    81, in __init__
>        self.top_block = top_block_maker (frame, self, vbox, sys.argv)
>      File "./usrp2_fft.py", line 70, in __init__
>        self.u = usrp2.source_32fc(options.interface, options.mac_addr)
>      File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp2.py",
> line 
>    621, in source_32fc
>        return _usrp2.source_32fc(*args, **kwargs)
>    RuntimeError: Unable to retrieve daughterboard info

This error makes me think that you don't have the current firmware and
fpga images installed on the SD Card.

You can download them here:

  http://gnuradio.org/releases/usrp2-bin/trunk/txrx_edk10.1_r10925.bin
  http://gnuradio.org/releases/usrp2-bin/trunk/u2_rev3_ise10.1sp3_r10766.bin

Eric