[mythtv-users] Re: MythTV & Jack

Mark Knecht markknecht at gmail.com
Wed Sep 14 03:17:47 UTC 2005


On 9/13/05, Michael T. Dean <mtdean at thirdcontact.com> wrote:
> Mark Knecht wrote:
> 
> >On 9/13/05, Ross Campbell <ross.campbell at gmail.com> wrote:
> >
> >
> >>>In my case I have headphones on and I'm working on a song.
> >>>(Ardour/Jack/synths/whatever) I also have MythTV open in a Window.
> >>>Since Jack has grabbed the sound hardware I cannot hear audio from
> >>>Myth. I'm very multi-tasking and like the TV on while I write music.
> >>>
> >>>
> >>So, can ALSA's mixer be used here to put JACK and mythtv using
> >>ALSA:mixer on the same footing? I know that there have been various
> >>posts about some problems using ALSA's mixer with MythTV. I have yet
> >>to try it, and I don't know if JACK would solve those problems with
> >>multiplexing audio. If it does, that would be a good thing in and of
> >>itself. I've always wanted to have (tasteful!) sound effects
> >>associated with MythTV events.
> >>
> >>
> >Jack would solve these problems. It does for other audio apps. I was
> >hoping that MythTV had been designed to work with Jack as many other
> >apps have been, but possibly (based on the lack of responses) it
> >hasn't and that's why I'm not making forward progress here.
> >
> >
> 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.
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 ~ $

Thanks for the interest.

cheers,
Mark


More information about the mythtv-users mailing list