No sound with AC3 optical pass through using a52

No sound with AC3 optical pass through using a52

Postby Joste » Jan 29th, '15, 17:38

Following the instructions here: http://colin.guthr.ie/2010/12/bobby-dig ... -surround/ (which I found a link to in this forum) I can now select 5.1 channel output in KDE systemsettings however it doesn't seem to work. If I then reboot I still have no sound however DolbyDigital light up on the surround amp when a sound is playing.
Playing a 5.1 test ogg in mplayer results in the following.
Code: Select all
[joste@htpc Downloads]$ mplayer TestMySurround-en.dbr.ogg
MPlayer SVN-3.r36361.3.mga4.tainted-4.8.2 (C) 2000-2013 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing TestMySurround-en.dbr.ogg.
libavformat version 55.12.100 (external)
libavformat file format detected.
[lavf] stream 0: audio (vorbis), -aid 0
Load subtitles in ./
==========================================================================
Trying to force audio codec driver family libmad...
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
libavcodec version 55.18.102 (external)
AUDIO: 48000 Hz, 6 ch, floatle, 384.0 kbit/4.17% (ratio: 48000->1152000)
Selected audio codec: [ffvorbis] afm: ffmpeg (FFmpeg Vorbis)
==========================================================================
AO: [pulse] 48000Hz 2ch floatle (4 bytes per sample)
Video: no video
Starting playback...
A:   0.0 (00.0) of 54.0 (54.0)  0.4%
Audio device got stuck!
A:   0.0 (00.0) of 54.0 (54.0)  0.4%
Audio device got stuck!
A:   0.0 (00.0) of 54.0 (54.0)  0.4%
Audio device got stuck!
A:   0.0 (00.0) of 54.0 (54.0)  0.4%


I also get this if I run systemsettings from konsole and click on the speaker test buttons - but only after trying mplayer - if I try it first there is no error, both times no sound but the Dolbydigital indicator lights on the amp.
Code: Select all
systemsettings(6217) context_state_callback: PulseAudio context lost. Scheduling reconnect in eventloop.


The forum post that gave me the link was several years old so am I just following old advice?

The amp works since the digital stereo output works and also it has a built in DVD player which works too.

Mageia 4 32 bit Intel 82801I (ICH9 Family) HD audio controller onboard Asus P5K Premium m/b.
Joste
 
Posts: 9
Joined: Sep 7th, '13, 12:18

Re: No sound with AC3 optical pass through using a52

Postby Joste » Jan 29th, '15, 21:07

I have now tried DTS using libalsa-plugins-dca and dcaenc but not even getting the DCA light on the amp lighting up.
Joste
 
Posts: 9
Joined: Sep 7th, '13, 12:18


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