[mythtv-users] MythTV 0.24 HDMI audio problem

[Steven Adeff]

On Sat, Nov 27, 2010 at 1:47 PM, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> On Sat, Nov 27, 2010 at 1:16 PM, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
>> On Wed, Nov 24, 2010 at 4:27 PM, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
>>> On Wed, Nov 24, 2010 at 10:06 AM, Jean-Yves Avenard <jyavenard at gmail.com> wrote:
>>>> The fixes have been backported to 0.24-fixes.
>>>>
>>>> If you use an HDMI TV or amplifier that only supports stereo PCM but
>>>> supports 5.1 with AC3/DTS; you will have to go in the Audio Settings
>>>> and check Advance Audio Configuration and Stereo PCM only.
>>>>
>>>> Jean-Yves
>>>
>>> Great, will give it a go and let you know. Thanks for the work JYA!
>>
>> I've updated to the 27352 mythbuntu auto-build.
>>
>> What I've noticed: when I scan and use ALSA:hdmi:CARD=NVidia_1 I get
>> the following frontend output
>>
>> 2010-11-27 12:16:34.373 AFD: Opened codec 0x971a5b90, id(H264) type(Video)
>> 2010-11-27 12:16:34.374 AFD: codec AC3 has 1 channels
>> 2010-11-27 12:16:34.375 AFD: Opened codec 0x971b1d30, id(AC3) type(Audio)
>> 2010-11-27 12:16:34.588 AO: Opening audio device 'hdmi:CARD=NVidia_1'
>> ch 2(1) sr 48000 sf signed 16 bit reenc 0
>> 2010-11-27 12:16:34.617 AudioPlayer: Enabling Audio
>>
>> but no sound over HDMI
>>
>> If I go back to use the old ALSA:hw:1,7 I get sound, AC3/DTS look to
>> work properly, and my HD music plays properly. So it looks like it's
>> all good minus the general ALSA issue with device scanning, but thats
>> not your issue to deal with.
>>
>> Thanks JYA!
>
> I spoke too soon. I just tried to play some music and got this,
> 2010-11-27 13:20:46.091 Pulse: PulseAudio not running
> 2010-11-27 13:20:46.103 ALSA, Error: snd_pcm_open("hw:1,7"): No such device
> 2010-11-27 13:20:46.103 AO: Killing AudioOutputDSP
> 2010-11-27 13:20:46.103 AO: Original codec was NONE, signed 16 bit, 44
> kHz, 2 channels
> 2010-11-27 13:20:46.103 AO: enc(0), passthru(0), canAC3(0), canDTS(0),
> canLPCM(0), configured_channels(2), 2 channels supported(1)
> 2010-11-27 13:20:46.104 AO: Audio processing enabled
> 2010-11-27 13:20:46.104 ALSA, Error: snd_pcm_open("hw:1,7"): No such device
> 2010-11-27 13:20:46.105 AudioOutput Error: Aborting reconfigure
> 2010-11-27 13:20:46.594 AO: Pause 1
> [mp3 @ 0x937114b0] max_analyze_duration reached
> 2010-11-27 13:20:46.630 AO: Reconfigure(): No change -> exiting
>
> followed by the frontend crashing...
> if i then try and go into the settings the AC3/DTS check boxes are
> missing and if i do a scan and try and manually enter alsa:hw:1,7
> I get this in the log
> 2010-11-27 13:20:53.124 Audio device ALSA:hw:1,7 isn't usable Check
> audio configuration
>
> a reboot seems to fix it. this happens anytime I kill the frontend,
> the sound stops working, with Myth showing this in the log when it
> starts back up,
> 2010-11-27 13:43:21.625 Pulse: PulseAudio not running
> 2010-11-27 13:43:21.642 ALSA, Error: snd_pcm_open("hw:1,7"): No such device
> 2010-11-27 13:43:21.642 AO: Killing AudioOutputDSP
> 2010-11-27 13:43:21.643 Audio device ALSA:hw:1,7 isn't usable Check
> audio configuration

well, I spoke too soon, now no sound works at all from the hdmi port,
regardless of what app I'm using.
I tried updating the 1.0.23 alsa drivers from the ricotz ppa, no go,
then I tried compiling ALSA 1.0.23 from scratch, no go.

I need to try testing without running mythfrontend to see if it's the
same case where mythfrontend is causing none of them to work.

now this is a much bigger headache than it was before...

-- 
Steve
http://www.mythtv.org/wiki/User:Steveadeff
Before you ask, read the FAQ!
http://www.mythtv.org/wiki/index.php/Frequently_Asked_Questions
then search the Wiki, and this list,
http://www.gossamer-threads.com/lists/mythtv/
Mailinglist etiquette -
http://www.mythtv.org/wiki/index.php/Mailing_List_etiquette