[mythtv] PVR250 sometimes sound stops working

[Tako Schotanus]

Sorry I can't help you but I just wanted to mention that I have the same
problem. Although for me it seems to be related to a channel switch: as
long as the recordings are on the same channel everything is okay, but
if the backend has to switch channels it seems it loses all audio after
the switch. Strange thing is that switching channels manually never
shows this problem, only when the backend changes the channel
automatically.

NB: I use an external script to change channels, but the only thing it
does is a $ivtvObj->setFrequency($tunerFD, $tunerNum, $driverf) call
using the ivtv perl bindings.

-Tako

> -----Original Message-----
> From: mythtv-dev-bounces at mythtv.org 
> [mailto:mythtv-dev-bounces at mythtv.org] On Behalf Of Steven Cruysberghs
> Sent: dinsdag 20 januari 2004 17:32
> To: mythtv-dev at mythtv.org
> Subject: [mythtv] PVR250 sometimes sound stops working
> 
> 
> Sorry for reposting this. I tried the user list yesterday and 
> didn't get
> a usefull reply and since I'm not sure everybody here reads the users
> list... (if you do, please ignore this).
> 
> 
> --------
> Hi,
> 
> I've looked around the myth en ivtv mailing lists but I 
> couldn't find a
> decent solution to this.
> 
> I have a myth box (Pundit) with a PVR250 and it works great. There is
> this one anoying isue with the sound. Basicly it stops working after a
> while. Everything would be ok for a couple of recordigs (2 or 3) and
> than the next recording has no sound in it. Switching to live TV after
> that has no sound either while previous recording still play ok with
> sound. Resetting the ivtv driver (test_ioctl -u 0xff) or restarting
> mythbackend fixes things for the next few recordings. 
> I've looked at the logs (frontend, backend, syslog, messages, ) but no
> difference between a recording with or without sound there. First I
> thougt it had someting to do with recordings starting while 
> watching an
> other recording but that's not it.
> 
> I have switched to the lates CVS versions of Myth and the IVTV drivers
> (last Friday) but the problem is still there.
> 
> I'm starting to think it's PAL and or stereo nicam related. I 
> found this
> thread:
> http://www.gossamer-threads.com/perl/mailarc/gforum.cgi?post=9
1303;searc
h_string=sometimes%20no%20sound;guest=2078416&t=search_engine#91303 and
it mentions a patch for the IVTV sound driver. This looks like it stops
setting a specific stereo mode since it comments out this line in the
msp3400.c file: "msp3400c_setstereo(client,va->mode);"  

Any help on this would be greatly appreciated 

Steven