[mythtv-users] alsa works with mplayer, but now with mythtv

[Peter Lee]

[Sorry about the change in subject line.  I goofed on my previous reply and
am trying to fix it now.]

On Dec 16, 2003, a 00:07:10, Jarod C. Wilson wrote:
> 
> On Dec 15, 2003, at 04:52, Peter Lee wrote:
> 
>> Hmm...I don't recall a frontend option like that, but I'll check that
>> this
>> evening when I get home.  And yes, I did enable the spdif output, using
>> gnome-alsamixer.  The thing is, I am failing to get output from either
>> the
>> headphone line-out or the spdif-out on the soundblaster (except when I
>> use
>> mplayer)...
> 
> Is your audio output device in mythfrontend set correctly? (i.e., to
> /dev/dsp or whatever dsp is associated with that card?). If you still
> have the config for the first card in your system, the second card is
> probably using /dev/dsp1 (/dev/dsp links to /dev/dsp0, I believe),
> which you need to tell MythTV to use as its audio out device.
> 

I just checked:  I have /dev/dsp and /dev/dsp1.  I don't have a /dev/dsp0.
In mythfrontend setup, the audio is set to /dev/dsp.  Just for kicks, I
tried switching it to /dev/dsp1.  Still no sound out of the SBLive.
HOWEVER: After this little experiment, I went back into mythfrontend setup
to switch the audio back to /dev/dsp.  But when I did this, I saw that it
was already set to /dev/dsp.  In other words, my attempt to change to
/dev/dsp1 didn't "stick"!

I wonder if this is a clue?...

I am really really happy with everything other than this.  I have been
contemplating upgrading to 0.13, but somehow it seems wrong to do the
upgrade without first understanding what is going wrong here.



> 
>> On Dec 15, 2003, at 00:00:02, Jarod C. Wilson wrote:
>>> 
>>> On Dec 14, 2003, at 19:26, Peter Lee wrote:
>>> 
>>>> I hesitate to ask this question, because I am dead-certain that it
>>>> has
>>>> already been addressed before.  But an afternoon of grep'ing around
>>>> failed
>>>> to turn up the answer...
>>>> 
>>>> I have recently installed 0.12 on RH9, using Jarod's instructions
>>>> (wow
>>>> ---
>>>> are they ever *great* instructions!  No issues at all and the whole
>>>> install,
>>>> for a relative newbie, took less than an hour after RH9 was
>>>> installed).  The
>>>> machine is using a pvr-250 for encoding and running on an XP1800+ on
>>>> an Asus
>>>> A7N8X-X motherboard.  Initially I was using the onboard audio, but
>>>> since the
>>>> machine also has a SoundBlaster Live! card, I decided to install
>>>> alsa,
>>>> with
>>>> the idea of using SBLive's spdif output through my a/v receiver.
>>>> 
>>>> Now, the problem: I am not getting any audio from the SBLive line-out
>>>> when I
>>>> run mythtv.  Note, however, that (1) I *do* get audio from the
>>>> motherboard's
>>>> onboard line-out (and in fact that is how I have been watching mythtv
>>>> for
>>>> the past few days), and (2) I *do* get audio from the SBLive line-out
>>>> when I
>>>> run mplayer.
>>>> 
>>>> What is going on here?  I suspect that there is something simple in
>>>> the
>>>> setup that I've neglected, but I haven't been able to figure it out.
>>>> And
>>>> from reading the archives, I suspect that this is a much simpler
>>>> sound
>>>> problem than has been addressed recently.
>>> 
>>> I was running into this tonight with my recently upgraded to 0.13 and
>>> Fedora Core system, and the fix was to disable AC3 passthrough to
>>> SPDIF
>>> in the frontend settings. I don't remember if that was there in 0.12
>>> though. :-\
>>> 
>>> Did you also enabled the SPDIF output in alsamixer or gnome-alsamixer?
>>> You have to explicitly turn it on.
> 
> -- 
> Jarod C. Wilson, RHCE
> 
> Got a question? Read this first...
>    http://catb.org/~esr/faqs/smart-questions.html
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>    http://wilsonet.com/mythtv/
> MythTV Searchable Mailing List Archive
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