Re: USRP UHD Source problem

[Mike Markowski]

Some progress.  When I log in as another user, gr runs fine with a usrp. 
 Logging in as me, I get the errors previously posted.  My environment 
seems to (suddenly) be the issue, so I:

1. Moved ~/.bashrc to a new name to avoid any improper env var settings.

2. Moved ~/.config/GNU\ RADIO

But I still get errors previously posted.  Are there other files 
gnuradio-companion is looking at that could be the culprit?

Thanks,
Mike

On 4/24/21 1:04 PM, Mike Markowski wrote:
> Thanks for checking, Christophe.  I agree that it's strange.  I've been 
> away from gnuradio doing some cyclostationary work, so haven't touched 
> any flowgraphs in weeks.  I see that my newest flowgraphs were built 
> April 7 and that gnuradio-companion, no doubt after an Ubuntu upgrade, 
> shows a date of April 9.
>
> I'll share debugging breakthroughs, but would be glad to hear from 
> others if your GR 3.8.1.0 is or isn't running fine.  Most likely, it's 
> my environment since I don't see a flurry of 'me too' notes.
>
> Mike
>
> On 4/24/21 12:16 PM, Christophe Seguinot wrote:
> > This flowgraph is correctly build under GR 3.9.0.0 (no USRP source to 
> > test further)
> >
> > The error is quite strange, I think there is no "len_tag_name" 
> > parameter in such a simple flowgraph
> >
> > On 24/04/2021 16:35, Mike Markowski wrote:
> > > I'm running gnuradio companion 3.8.1.0 (Python 3.8.6) on Ubuntu 
> > > 2020.10.  After a few weeks away from gnuradio, today I get errors 
> > > with the USRP UHD Source, and previously working flowgraphs no longer 
> > > build. (Previously built flowgraph python files still run fine.)  The 
> > > attached flowgraph doesn't get much simpler, but building yields:
> > >
> > > Generating: '/home/mm/sdr/fm/uhdTest.py'
> > > Generate Error: (NameError("'len_tag_name' is not defined"), 
> > > 'uhd.usrp_source(\n    ",".join((${dev_addr}, ${dev_args})),\n 
> > > uhd.stream_args(\n        cpu_format="${type}",\n
> > >
> > > [... on and on ...]
> > >
> > > , uhd.ALL_MBOARDS)\n% else:\n# No synchronization enforced.\n% endif\n')
> > > >>> Failure
> > > Traceback (most recent call last):
> > >   File "memory:0x7f3082ab36d0", line 136, in render_body
> > >   File "/usr/lib/python3/dist-packages/mako/runtime.py", line 106, in 
> > > __getitem__
> > >     return compat_builtins.__dict__[key]
> > > KeyError: 'len_tag_name'
> > >
> > > [... still more...]
> > >
> > > Is anyone else seeing this error?
> > >
> > > Thanks,
> > > Mike