[mythtv-users] Re: MythTV & Jack

[Paul Andreassen]

On Wed, 14 Sep 2005 01:17 pm, Mark Knecht wrote:
> > Can't really help you other than to say there's some JACK-support code
> > in Myth.
> >
> > ./configure --help
> >
> > shows
> >
> >   --disable-audio-jack     disable JACK audio support
> >
> > (JACK support is autodetected, but you can explicitly disable it if you
> > like.)  As for how to get it working, I can't tell you.
> >
> > Mike
>
> Thanks Mike,
>    I've seen that, and AFAICT Jack support is supposed to be enabled,
> but even with Jack working on this machine it never finds it and keeps
> trying to use OSS which it says doesn't work but other apps find OK:
>
> mark at lightning ~ $ mythfrontend
> 2005-09-13 20:15:01.231 New DB connection, total: 1
> Total desktop width=1280, height=1024, numscreens=1
> 2005-09-13 20:15:01.314 Using screen 0, 1280x1024 at 0,0
> 2005-09-13 20:15:01.343 mythfrontend version: 0.18.1.20050510-1
> www.mythtv.org 2005-09-13 20:15:01.343 Enabled verbose msgs : important
> general
> 2005-09-13 20:15:02.091 Switching to square mode (blue)
> mythtv: could not connect to socket
> mythtv: No such file or directory
> lirc_init failed for mythtv, see preceding messages
> 2005-09-13 20:15:03.137 Registering Internal as a media playback plugin.
> 2005-09-13 20:15:12.943 New DB connection, total: 2
> 2005-09-13 20:15:13.248 Connecting to backend server:
> 192.168.1.55:6543 (try 1 o f 5)
> 2005-09-13 20:15:13.256 Using protocol version 15
> 2005-09-13 20:15:18.036 Changing from None to None
> 2005-09-13 20:15:21.110 All Programs
> 2005-09-13 20:15:26.209 New DB connection, total: 3
> 2005-09-13 20:15:26.790 Disable DPMS
> 2005-09-13 20:15:27.993 No useable audio output driver found.
> 2005-09-13 20:15:27.993 Don't disable OSS support unless you're not
> running on L inux.

This means you HAVE to compile in OSS support if you are using Linux.  So 
enable OSS and Jack if you want to use it.

> 2005-09-13 20:15:46.907 Changing from None to WatchingPreRecorded
> 2005-09-13 20:15:46.907 Decoder not alive, and trying to play..
> 2005-09-13 20:15:46.911 Changing from None to None
> mark at lightning ~ $

To get the configure script to work you need the development libraries.  On 
Debian you need 'libjack0.80.0-0' and 'jackd'
( http://www.gossamer-threads.com/lists/mythtv/dev/108824 )

It appears that you can put Jack Port Names in the audio setting 
(where /dev/dsp is).

I've never used Jack but can tell you when I set 'artsd' to use ALSA, there 
are no sound conflicts on my system.

Paul
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