[mythtv-users] No sound only in mythtv after install of Ubuntu 10.10

Greg greg12866 at nycap.rr.com
Thu Oct 14 14:27:02 UTC 2010


  On 10/14/2010 08:33 AM, Marc Grondin wrote:
> i have posted on the mythtv forum and ubuntu forum about this issue 
> Figured i would try to get help from as meny sources as possibble. so 
> here is transcript of my post:
>
> I have a Hauppauge hvr 950-q that I had been using with 10.04 since it 
> came out with no issues at all(non that i could not fix anyways) had 
> mythtv set up using mythubuntu and all was great. I upgraded to 10.10 
> last night and cannot get sound to work during live tv. If i watch an 
> old recording the sound works. Sound also works everywhere else on my 
> system. Before the upgrade the audio setting in the backend 
> configuration of the tv card was set to /dev/dsp2 this no longer 
> works. if i put it at that(i have to enter it manually) then i have no 
> sound and if i try to change Channel the tv feed crashes.
>
> I have tried /dev/dsp2,1 i even tried /dev/snd/contolC1 wich i got 
> from browsing around in /dev and found this to point to my 950-q all 
> with same results.
>
> If i use alsa:default as the audio device in the backend i still get 
> no sound but i am at least able to change channel.
>
> everything works in TVTime.
>
> i am simply at a loss. My next step was going to be a clean install of 
> 10.10 but i thought i would check here before taking such a drastic step.
>
> this is the output of aplay -l
>
> **** List of PLAYBACK Hardware Devices ****
> card 0: NVidia [HDA NVidia], device 0: STAC92xx Analog [STAC92xx Analog]
> Subdevices: 0/1
> Subdevice #0: subdevice #0
> card 0: NVidia [HDA NVidia], device 1: STAC92xx Digital [STAC92xx Digital]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
>
> did not really get replies so i went ahead and reinstalled a fresh 
> copy of Ubuntu 10.10 but the problem was not solved
>
> so i launched mythtv from shell to try and see what it was using for 
> audio input and saw this:
>
> Found "HVR-950Q : USB Audio (hw:1,0)"
>
> so i set the audio input in mythbackend to alsa:hw:1,0(Actually i 
> think i might have put in alsa:default:hw:1,0 not 100% sure. wich one 
> would be right?)
>
> again anytime i use an audio input other than alsa:default i am not 
> able to change the channel
>
>
> then i went and looked in the mythfrontend log and saw this:
>
> ALSA lib pcm_dmix.c:1018: (snd_pcm_dmix_open) unable to open slave
> 2010-10-13 22:19:43.810 AudioOutput Error: snd_pcm_open(default): 
> Device or resource busy
> 2010-10-13 22:19:43.811 AO: Using resampler. From: 44100 to 48000
> 2010-10-13 22:19:43.811 Opening audio device 'default'. ch 2(2) sr 
> 48000 (reenc 0)
> 2010-10-13 22:19:43.811 Opening ALSA audio device 'default'.
> ALSA lib pcm_dmix.c:1018: (snd_pcm_dmix_open) unable to open slave
> 2010-10-13 22:19:43.812 AudioOutput Error: snd_pcm_open(default): 
> Device or resource busy
> 2010-10-13 22:19:43.812 NVP(0): Disabling Audio, reason is: 
> snd_pcm_open(default): Device or resource busy
>
> what can i do to resolve this. audio work in tv time still and my old 
> recordings do play audio just not livetv(in mythtv)
>
>
>
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Fixes,trunk?
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