[mythtv-users] Can't get audio to work on frontend

Thu Dec 2 06:39:45 UTC 2010

> you are using a digital output, iec958 is spdif (coax or optical)
>
> You won't get sound from the analog output that way.
>
> If using digital, there's no point setting the control volume, that
> won't work with digital
>

Oops! Okay I hit scan for audio devices again and the options it provides
are:

ALSA:iec958:CARD=Revolution71,DEV=0
ALSA:side:CARD=Revolution71,DEV=0
NULL

(Up till now, I had been using ALSA:default. Here is my /etc/asound.conf if
helpful: http://pastebin.ca/2008380) I chose the 2nd one and here's the
output I got:

2010-12-02 01:29:08.324 Loading en_us translation for module mythvideo
2010-12-02 01:29:08.376 Found mainmenu.xml for theme 'Arclight'
2010-12-02 01:29:08.727 MythCoreContext: Connecting to backend server:
192.168.1.100:6543 (try 1 of 1)
2010-12-02 01:29:08.729 Using protocol version 63
2010-12-02 01:29:14.383 ALSA, Error:
snd_pcm_open("center_lfe:CARD=Revolution71,DEV=0"): Device or resource busy
2010-12-02 01:29:14.484 ALSA, Error:
snd_pcm_open("front:CARD=Revolution71,DEV=0"): Device or resource busy
2010-12-02 01:29:14.682 ALSA, Error:
snd_pcm_open("rear:CARD=Revolution71,DEV=0"): Device or resource busy
2010-12-02 01:29:14.883 ALSA, Error:
snd_pcm_open("surround40:CARD=Revolution71,DEV=0"): Device or resource busy
2010-12-02 01:29:14.982 ALSA, Error:
snd_pcm_open("surround41:CARD=Revolution71,DEV=0"): Device or resource busy
2010-12-02 01:29:15.086 ALSA, Error:
snd_pcm_open("surround50:CARD=Revolution71,DEV=0"): Device or resource busy
2010-12-02 01:29:15.184 ALSA, Error:
snd_pcm_open("surround51:CARD=Revolution71,DEV=0"): Device or resource busy
2010-12-02 01:29:15.287 ALSA, Error:
snd_pcm_open("surround71:CARD=Revolution71,DEV=0"): Device or resource busy
2010-12-02 01:29:40.484 Received a remote 'Clear Cache' request
2010-12-02 01:29:41.650 Received a remote 'Clear Cache' request
2010-12-02 01:29:44.759 New DB connection, total: 2
2010-12-02 01:29:44.801 Connected to database 'mythconverg' at host:
192.168.1.100
2010-12-02 01:29:52.886 TV: Attempting to change from None to
WatchingPreRecorded
2010-12-02 01:29:52.981 AudioPlayer: Disabling Audio, params(0,2,44100)
2010-12-02 01:29:53.119 AudioOutput Error: Aborting Audio Reconfigure.
Invalid audio parameters ch 2 fmt 0 @ 44100Hz
2010-12-02 01:29:53.120 AudioPlayer: Disabling Audio, reason is: Aborting
Audio Reconfigure. Invalid audio parameters ch 2 fmt 0 @ 44100Hz
2010-12-02 01:29:53.120 playCtx, Error: Aborting Audio Reconfigure. Invalid
audio parameters ch 2 fmt 0 @ 44100Hz
2010-12-02 01:29:53.207 AFD Warning: ScanATSCCaptionStreams() called with no
PMT
2010-12-02 01:29:53.208 AFD: Opened codec 0xa4994f30, id(MPEG2VIDEO)
type(Video)
2010-12-02 01:29:53.208 AFD: codec MP2 has 2 channels
2010-12-02 01:29:53.208 AFD: Opened codec 0xa4764330, id(MP2) type(Audio)
2010-12-02 01:29:53.315 AO: Opening audio device
'side:CARD=Revolution71,DEV=0' ch 2(2) sr 48000 sf signed 32 bit reenc 0
2010-12-02 01:29:53.315 Opening ALSA audio device
'side:CARD=Revolution71,DEV=0'.
2010-12-02 01:29:53.320 AudioPlayer: Enabling Audio
2010-12-02 01:29:54.212 Clearing OpenGL painter cache.
2010-12-02 01:29:54.291 VDPAU: Created 2 output surfaces.
2010-12-02 01:29:54.291 VDPAU: Version 1
2010-12-02 01:29:54.291 VDPAU: Information NVIDIA VDPAU Driver Shared
Library  260.19.21  Thu Nov  4 20:56:20 PDT 2010
2010-12-02 01:29:54.291 VDPAU: Created VDPAU render device 1920x1200
2010-12-02 01:29:54.305 Player(0): Forcing decode extra audio option on
(Video method requires it).
2010-12-02 01:29:54.340 [mpegvideo_vdpau @ 0xb4c334a0]warning: first frame
is no keyframe
2010-12-02 01:29:54.413 Player(0): Video timing method: USleep with busy
wait
2010-12-02 01:29:54.414 TV: Changing from None to WatchingPreRecorded
2010-12-02 01:29:54.478 VDPAU: Added 2 output surfaces (total 4, max 4)
2010-12-02 01:29:55.869 Marking recording as unwatched
2010-12-02 01:29:56.058 TV: Attempting to change from WatchingPreRecorded to
None
2010-12-02 01:29:56.066 VDPAU Painter: Clearing VDPAU painter cache.
2010-12-02 01:29:56.066 MythPainter: 43 images not yet de-allocated.
2010-12-02 01:29:56.169 TV: Changing from WatchingPreRecorded to None
2010-12-02 01:29:57.301 Preview: RemotePreviewRun() -- no reply..
2010-12-02 01:29:58.206 OpenGL: Deleting OpenGL Resources
2010-12-02 01:29:58.244 Deleting UPnP client...

 From the log I don't see anything suspicious except that the version
> of 0.24-fixes is already a bit old
> and you are using digital output, if your TV is connected via analog
> you won't hear a thing.
>
> So please provide more information:
> version of mythtv used (SVN revision)
> how your TV is connected to your PC.
> what audio device are you using with the other applications ?
>

The myth version I'm using is the latest stable one provided by our package
manager (Arch linux user here). Here is exact info from the mythtv package
in our Arch repo:

└─> yinfo mythtv
Name           : mythtv
Version        : 0.24-1
URL            : http://www.mythtv.org/
Licenses       : GPL
Groups         : None
Provides       : None
Depends On     : lame  libavc1394  libiec61883  libvdpau  libxinerama
libxvmc  lirc-utils  mesa  mysql-clients  mysql-python  perl-dbd-mysql
perl-libwww  perl-net-upnp  python-lxml  qt  wget
Optional Deps  : xmltv: to download tv listings
Required By    : mythplugins-mythvideo  myththemes
Conflicts With : None
Replaces       : None
Installed Size : 67240.00 K
Packager       : Jonathan Conder <jonno.conder at gmail.com>
Architecture   : i686
Build Date     : Wed 10 Nov 2010 08:49:14 PM EST
Install Date   : Tue 30 Nov 2010 10:48:14 PM EST
Install Reason : Explicitly installed
Install Script : Yes
Description    : A Homebrew PVR project

My system is very basic, I am using a desktop computer with normal LCD
monitor, and analog sound with a Logitech z-5300e system. Hopefully the
asound.conf linked above can cover audio devices if that's what you mean?
Thanks very much :)
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