[mythtv-users] /dev/video0 - Device or ressource busy

Matthew Mead mkmead at hoodnet.net
Sun May 23 02:07:30 EDT 2004


I think I came across something..

I get could not open audio device: /dsp/dsp

I was reading in the old threads that myth has to be able to get audio
before it can start recording video to present to the screen.

I noticed my hard disk isn't moving like it did once before.

Where should I start looking to troubleshoot this..

I can hear audio just fine so I'm kind of at a loss as to why it can't talk
to the dsp
----- Original Message ----- 
From: "Matthew Mead" <mkmead at hoodnet.net>
To: <travis at wsor.net>; "Discussion about mythtv" <mythtv-users at mythtv.org>
Sent: Sunday, May 23, 2004 1:41 AM
Subject: Re: [mythtv-users] /dev/video0 - Device or ressource busy


> When I try
>
> cat /dev/video0 >test.mpg
>
> I get:
>
> cat: /dev/video0: invalid argument
>
> as root or as mythtv
>
> but if I run xawtv I can get a image and sound just fine once I change it
> from PAL to NTSC.
>
>
> ----- Original Message ----- 
> From: "Travis" <travs at wsor.net>
> To: "'Discussion about mythtv'" <mythtv-users at mythtv.org>
> Sent: Sunday, May 23, 2004 12:52 AM
> Subject: RE: [mythtv-users] /dev/video0 - Device or ressource busy
>
>
> > > -----Original Message-----
> > > From: mythtv-users-bounces at mythtv.org [mailto:mythtv-users-
> > > bounces at mythtv.org] On Behalf Of Matthias Meyer
> > > Sent: Saturday, May 22, 2004 11:24 PM
> > > To: mythtv-users at mythtv.org
> > > Subject: [mythtv-users] /dev/video0 - Device or ressource busy
> > >
> > > Hello,
> > >
> > > I running debian, have installed MythTV 0.14-6 and use a PVR350.
> > > Within some hard weeks I have load channels (the right one?) and
> > > television-program with tv_grab_de_tvtoday from xmltv 0.5.33-1.
> > >
> > > I try "cat /dev/video0 > test.mpg" and see it will work without error
> > > message.
> > > So I abort it and start mythfrontend to try watch TV. But see the
> > > /var/log/mythtv/mythbackend.log:
> > > QSettings: error creating /.qt
> > > Starting up as the master server.
> > > 2004-05-22 22:41:50 mythbackend version: 0.14.20040123-1
www.mythtv.org
> > > 2004-05-22 22:41:50 Enabled verbose msgs : important general
> > > 2004-05-22 22:41:53 Found changes in the todo list.
> > > 2004-05-22 22:43:25 MainServer::HandleAnnounce Playback
> > > 2004-05-22 22:43:25 adding: vdr.PrivateLAN.at as a client (events: 0)
> > > 2004-05-22 22:43:25 MainServer::HandleAnnounce Playback
> > > 2004-05-22 22:43:25 adding: vdr.PrivateLAN.at as a client (events: 1)
> > > 2004-05-22 22:43:25 MainServer::HandleAnnounce Playback
> > > 2004-05-22 22:43:25 adding: vdr.PrivateLAN.at as a client (events: 0)
> > > 2004-05-22 22:43:25 MainServer::HandleAnnounce Playback
> > > 2004-05-22 22:43:25 adding: vdr.PrivateLAN.at as a client (events: 0)
> > > 2004-05-22 22:43:25 adding: vdr.PrivateLAN.at as a remote ringbuffer
> > > 2004-05-22 22:43:25 Changing from None to WatchingLiveTV
> > > error reading from: /dev/video0
> > > read: Device or resource busy
> > > error reading from: /dev/video0
> > > read: Device or resource busy
> > > error reading from: /dev/video0
> > > read: Device or resource busy
> > > error reading from: /dev/video0
> > > read: Device or resource busy
> > > error reading from: /dev/video0
> > > read: Device or resource busy
> > > error reading from: /dev/video0
> > > read: Device or resource busy
> > > error reading from: /dev/video0
> > >
> > > ...and I only can see a black screen.
> > > --
> > > no panic
> > >
> > > _______________________________________________
> > > mythtv-users mailing list
> > > mythtv-users at mythtv.org
> > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
> > A little more info might help isolate the problem.
> >
> > > I try "cat /dev/video0 > test.mpg" and see it will work without error
> > > message.
> >
> > 1) Does, mplayer play test.mpg fine after you stop the capture?
> >
> > 2) You're capturing as user mythtv, right?
> >
> > -- Travis
> >
> >
>
>
> --------------------------------------------------------------------------
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