On Thursday 07 August 2008 00:23:40 Lonnie Borntreger wrote:
> On Wed, 2008-08-06 at 22:32 +0200, Sebastian Buks wrote:
> > I have a problem that hasn't been here all the time. I think it
> > happened when I upgraded from Ubuntu 7.10 to 8.04. However this
> > might be wrong. Reverting the kernel (and thus the driver doesnt
> > give anything). When I check my devices I see that tuner1 has no
> > audio detected while tuner0 has it. Video works fine on both
> > devices. I have no clue on why suddenly one of the tuners not
> > detecting the audio stream.
> >
> > I read back on the list and found at least one other thread where
> > similar things happened but the thread was suddenly stopped and no
> > more information was given. Here are my "v4l2-ctl --log-status -d
> > 0" and "v4l2-ctl --log-status -d 1":
> >
> > Hope anyone can help me on this, right now I'm stuck with only one
> > tuner...
>
> I had the issue where after a year of working perfectly, one of my
> tuners started not getting audio. Then several months later the
> other did the same. My fix was to add the following to
> /etc/rc.d/rc.local: ivtvctl -d /dev/video0 -q1
> ivtvctl -d /dev/video1 -q1
>
> I did it for the first tuner with issues, and just duplicated it when
> the other developed the same issue.
>
> I'm on old drivers (as long as it works, I don't upgrade), so maybe
> the options have changed, but for the version I have here, -q does:
> -q, --set-audio-input=<num>
> set the current audio input to <num> [VIDIOC_S_AUDIO]
What -q1 does is that the audio demodulator is bypassed and you just get
mono audio. I would suggest testing under Windows first: I suspect
broken hardware.
Regards,
Hans
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