On Fri, Jul 3, 2009 at 1:05 PM, John Gilmore <[email protected]> wrote: > > gr-audio-oss and gr-audio-jack. The sound module being used is > > snd_hda_intel. > > In my experience, there seem to be endless permutations of problems > with snd_hda_intel ("HD Audio"). Even in newer Linux releases like > Ubuntu 9.04. I don't think I have a single machine on which > snd_hda_intel is trouble-free -- including an HP Athlon64 desktop, a > Dell Atom netbook, and an Acer Atom netbook. > > (which may or may not have anything to do with your problem.) > > John >
Thanks for the pointer. Adding a line in /etc/modprobe.d/alsa-base which specified the model of my computer helped (Dell Precision), more details here https://help.ubuntu.com/community/HdaIntelSoundHowto. However, the inputs in ALSA don't get correctly mapped to the actual physical inputs. For eg, the "Front Mic" on ALSA was actually the rear line-in. This only solved the problem of being able to get the example program running without any device busy errors or lockups. To be able to actually record sound, I had to install jack and play around with the settings for a bit. When using gnuradio I also added audio_module = audio_jack to the gnuradio config.conf file. Karthik
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