Fw: Fw: [mythtv-users] More FC2 MythTV problems...

1canuck2 1canuck2 at sympatico.ca
Mon Sep 6 18:57:16 EDT 2004

Thanks for the replies, there is Progress!

It now plays live TV without crashing, but no picture, just audio. I had 
spazzed on the mythtvsetup step and had selected vl card instead of PVR-x50. 

So, I reran mythtvsetup and changed this, reinitialized with a new 
mythfilldatabase and it still wouldn't work. 

Then I chgecked perms on /dev/video0. Its ownership was mythtv/root, but its 
perms were 600. So I chmod'ed to 660 and tried again. I now get audio but no 
video. MythTV seems to "minimize" to a little icon in the top left corner and 
I hear just the live TV audio. If I Alt+TAB to make MythTV the active 
application the remote works (pause, rewind, etc) but there is no video 

A couple of weird things: when it starts playing I get this on the mythtv user 
terminal window:
2004-09-06 18:41:45 Using protocol version 8
Input #0, mpeg, from 'rbuf://':
  Stream #0.0: Video: mpeg2video, 720x480, 29.97 fps
  Stream #0.1: Audio: mp2, 48000 Hz, stereo, 384 kb/s
2004-09-06 18:41:47 Opening OSS audio device '/dev/dsp'.
2004-09-06 18:41:47 Audio fragment size: 4096
2004-09-06 18:41:47 Using XV port 145
2004-09-06 18:41:48 Changing from None to WatchingLiveTV
2004-09-06 18:41:49 prebuffering pause

Here's my questions: Why "Opening OSS audio device '/dev/dsp'."? I followed 
Jarod's steps for Alsa audio, I would have thought it would report alsa not 
OSS, or is this normal?

More improtantly, and perhaps related to my video problem, if I go 
to /video/buffer (the XFS partition where the nuv files are created) and do 
an ls -l, the "ringbuf4.nuv" file it created has owner and group as root not 
mythtv, which is not what I would expect. Have I missed a step when getting 
the mythbackend to run? I checked it on in the Services panel, do I need to 
tell it to run as mythtv instead of root?

Also, I just had it schedule a recording and the file it is creating there is 
also owner/group of root.

I sure hope I am close to solving this, I truly appreciate the help from this 
community and am eager to show off my MythTV box to my geek friends (and 
perhaps win some converts...)


On Monday 06 September 2004 06:44 pm, you wrote:
> ----- Original Message -----
> From: "Jay R. Ashworth" <jra at baylink.com>
> To: "Discussion about mythtv" <mythtv-users at mythtv.org>
> Sent: Monday, September 06, 2004 5:59 PM
> Subject: Re: Fw: [mythtv-users] More FC2 MythTV problems...
> > On Mon, Sep 06, 2004 at 11:24:03AM -0700, Jarod Wilson wrote:
> >> On Monday 06 September 2004 07:26, 1canuck2 wrote:
> >> > Its a PVR-250. I have the ivtv drivers installed, and my capture card
> >> > is
> >> > working with cat /dev/video0.
> >> > dmesg shows that the card is being recognized so do you have any ideas
> >> > why
> >> > there is no hardware encoder choice listed?
> >>
> >> If you're not seeing the encoder options, as Isaac hinted, you may not
> >> have
> >> the card defined properly in your system. Fire up mythtvsetup and make
> >> sure
> >> that you defined the card type as a PVR-x50 hardware encoder card, or
> >> whatever it is, instead of a standard v4l card.
> >
> > And, in addition, make sure that the user which the backend runs as has
> > read and write permission on /dev/videoX (where x likely == 0).
> >
> > Cheers,
> > -- jra
> > --
> > Jay R. Ashworth
> > jra at baylink.com
> > Designer                          Baylink                             RFC
> > 2100
> > Ashworth & Associates        The Things I Think                       
> > '87 e24
> > St Petersburg FL USA      http://baylink.pitas.com             +1 727 647
> > 1274
> >
> > "You know: I'm a fan of photosynthesis as much as the next guy,
> > but if God merely wanted us to smell the flowers, he wouldn't
> > have invented a 3GHz microprocessor and a 3D graphics board."
> > -- Luke Girardi
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