Re: [Discuss-gnuradio] Clues about getting Alsa input/output working under recent Gnu Radio, with F7 with updates

[Eric Blossom]

On Sat, Nov 24, 2007 at 08:23:36PM -0500, Marcus Leech wrote:
> Sometime in the last six months or so, alsa sound support has stopped
> working in my usrp_psr_receiver.py application, with
>   the very helpful:
> 
>   File "/usr/local/bin/usrp_psr_receiver.py", line 343, in __init__
>     self.audio = audio.sink(second_input_rate, self.audiodev)
>   File
> "/usr/local/lib64/python2.5/site-packages/gnuradio/audio_alsa.py", line
> 236, in sink
>     return _audio_alsa.sink(*args)
> RuntimeError: audio_alsa_sink

I think you're missing the first line of the error log.  It should
have come from the alsa sink and should be at least vaguely
helpful. 

> 
> This is when asking for plughw:0,0  as the audio I/O device.
> 
> This used to work.
> 
> Interestingly, when I do an aplay -l from the command line as a regular
> user, it can't find any sound devices, but when
>   I do an aplay -l as root, it can find:
> 
> **** List of PLAYBACK Hardware Devices ****
> card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> 
> I'm near-certain that at some point, some Fedora 7 update buggered up
> something in the sound configuration somewhere, but
>   I'm not familiar enough with Alsa to know where.    Can anyone help?

Sorry, I'm basically clueless in that department.

Eric