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Re: TV card without sound



On Saturday 14 February 2009 16:53, Clodoaldo Pinto Neto wrote:
> 2009/2/14 Mikkel L. Ellertson <mikkel infinity-ltd com>:
> > Clodoaldo Pinto Neto wrote:
> >> Fedora 10 x86_64. PixelView Xtreme Global PV-833SPL(FRHV)-F-PU.
> >> Conexant 23883-39.
> >>
> >> The TV capture works but there is no sound. Using TVtime. Any ideas?
> >>
> >> Regards, Clodoaldo
> >>
> >> Pictures:
> >> http://s375.photobucket.com/albums/oo199/FogoCircular/23883-39/
> >
> > Dumb question - I don't know your card, but does it have a 1/8"
> > stereo jack on the back? I know I have used several that require a
> > jumper from the card to line in on your sound card.
>
> Thanks for asking. It has 1/8 stereo jack but according to the manual
> it is audio in. Does it make a difference?
>
> Clodoaldo

My Hauppauge TV Express card (bt878a, using the bttv driver) came with a short 
jumper cable to connect sound out from the tv card to line in on the 
soundcard, and the tv card has 2 1/8th jacks. One for line in, and the other 
for line out.

I see that your cat /proc/asound/cards shows 3 cards including one for the 
sound on the tv card. Fedora 10 has pulseaudio installed as default , and 
alsamixer, opened as alsamixer only shows the pulseaudio volume control. Open 
alsamixer as below, and you may find muted controls for the tv card, or some 
slider that needs to be pushed up.

<quote>
# cat /proc/asound/cards
 0 [SB             ]: HDA-Intel - HDA ATI SB
                      HDA ATI SB at 0xfbcf0000 irq 16
 1 [HDMI           ]: HDA-Intel - HDA ATI HDMI
                      HDA ATI HDMI at 0xfbee8000 irq 19
 2 [CX8801         ]: CX88x - Conexant CX8801
                      Conexant CX8801 at 0xfc000000
<end quote>


alsamixer -D hw:2

Alsamixer will open by default as F3, and show the playback controls, to view 
the capture controls press F4.

On my audigy2 soundblaster card there is an audigy mix control that needs to 
be up for sounds from the tv card to work. That control will not be there for 
your hda-intel card, but there may be controls on the soundcard that need to 
be up to get sounds out of the tv card. Open alsamixer as below for card0.

alsamixer -D hw:0

Pulseaudio is known to cause problems with some stuff, so if you want to 
temporarily remove it out of the equation, do a,
 yum remove alsa-plugins-pulseaudio.

You can always re-enable it later, with yum install alsa-plugins-pulseaudio, 
and if you are using KDE, install kde-settings-pulseaudio.

I did have problems with sound on my Hauppauge card, and had to set specific 
options to get the sound working, but that's a different tv card to yours.

2ยข worth of suggestions on a nice sunny afternoon in northern france.

Nigel.




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