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

[Eric Blossom]

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.

>    gr_vmcircbuf_createfilemapping: createfilemapping is not available

This is a little odd.  Does it pass "make check"?

>    usrp2: channel 0 not receiving
>    usrp2::rx_samples() failed
> 
> Does this provide any clues to those of you more familiar with the
> software?

Does it pass "make check"?

> I've tried flashing the firmware, and that didn't change anything.  I've
> also tried swapping out my USRP2 with a box running on a different
> machine seems to work, so this seems likely to be a software problem.
> 
> Any ideas what could be going on here?
> 
> - Wayde

Eric