[mythtv-users] slightly OT: no sound

[Mary Strimel]

On Mon, Dec 15, 2008 at 4:11 PM, Nick Rout <nick.rout at gmail.com> wrote:

> On Tue, Dec 16, 2008 at 8:20 AM, Mary Strimel <mary.strimel at gmail.com>
> wrote:
> > Hello,
> > My myth box has been running happily for 70+ days, but now after
> rebooting
> > there is no sound.  I don't think it's a myth-specific problem but since
> my
> > hardware is similar to other myth users I hope someone here can help me -
> > other routes have failed.
> >
> > I have onboard Via sound using Alsa's snd_via82xx driver.  I also have a
> > PC-HDTV 5500 and a WinTV PVR 250 installed.
> >
> > There are two weird things I noticed after the reboot (besides the eerie
> > quiet):
> >
> > 1) there no /dev/dsp device anymore.  I think myth was using /dev/dsp for
> > sound; the myth setting is now defaulted to "adsp" but I have no idea
> what
> > that is.
> >
> > 2) under xmms, sound *does* work if I select, under the ALSA output, "hw
> > 1,0" but there is no sound in any other program.  Alsamixer shows the Via
> > sound controller as device 1, and all channels are unmuted / top volume.
> >
> > I am aware that people on this mailing list have solved issues with PCI
> > cards being recognized in a different order at boot time, but I how do I
> > tell if this is actually the problem?  I don't want to be messing around
> > with settings in "blind" fashion and break something else.
> >
> > Also, if I determine that it's an issue with the card order, how would I
> > know which card "should" be detected first?  And why aren't any /dev/dsp
> > devices being created at all?
> >
> > Any help with the ANY of the above would be much appreciated!  If it
> > matters, I have Ubuntu Gutsy 64.
> > thanks,
> > Mary
>
> A few preliminary tests would be to run
>>
>
> aplay -l
>>
>>> aplay -L
>>>
>> ls /proc/asound (I think thats the path)
>>
>> to see what is recognised.
>>
>
The output is below.  It seems to be treating the HD5500  as the "default"
card.  Is that the problem?  If so, what do I do about it?


> mary at mythbox:~$ aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 1: V8237 [VIA 8237], device 0: VIA 8237 [VIA 8237]
>   Subdevices: 3/4
>   Subdevice #0: subdevice #0
>   Subdevice #1: subdevice #1
>   Subdevice #2: subdevice #2
>   Subdevice #3: subdevice #3
> card 1: V8237 [VIA 8237], device 1: VIA 8237 [VIA 8237]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
>


>
> mary at mythbox:~$ aplay -L
> default:CARD=CX8801
>     Conexant CX8801, CX88 Digital
>     Default Audio Device
> null
>     Discard all samples (playback) or generate zero samples (capture)
> default:CARD=V8237
>     VIA 8237, VIA 8237
>     Default Audio Device
> front:CARD=V8237,DEV=0
>     VIA 8237, VIA 8237
>     Front speakers
> surround40:CARD=V8237,DEV=0
>     VIA 8237, VIA 8237
>     4.0 Surround output to Front and Rear speakers
> surround41:CARD=V8237,DEV=0
>     VIA 8237, VIA 8237
>     4.1 Surround output to Front, Rear and Subwoofer speakers
> surround50:CARD=V8237,DEV=0
>     VIA 8237, VIA 8237
>     5.0 Surround output to Front, Center and Rear speakers
> surround51:CARD=V8237,DEV=0
>     VIA 8237, VIA 8237
>     5.1 Surround output to Front, Center, Rear and Subwoofer speakers
> iec958:CARD=V8237,DEV=0
>     VIA 8237, VIA 8237
>     IEC958 (S/PDIF) Digital Audio Output
>

 mary at mythbox:~$ cat /proc/asound/cards
 0 [CX8801         ]: CX88x - Conexant CX8801
                      Conexant CX8801 at 0xe3000000
 1 [V8237          ]: VIA8237 - VIA 8237
                      VIA 8237 with ALC655 at 0xc800, irq 22


>
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