petel at cs
Dec 16, 2003, 8:31 PM
Post #1 of 3
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alsa works with mplayer, but now with mythtv
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[.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
> MythTV, Fedora Core & ATrpms documentation:
> http://wilsonet.com/mythtv/
> MythTV Searchable Mailing List Archive
> http://www.gossamer-threads.com/archive/MythTV_C2/
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