[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: Still having problems with my tv tuner -- need help

On Saturday 09 May 2009 20:22, William Case wrote:
> Hi;
> tvtime gives me a great picture but no sound.
> mplayer gives me a terrible picture and no sound.
> (terrible = inverted picture with green background; just black and
> magenta for colours; and vertical lines running through it.)
> Is there a way to find out which video codecs etc. tvtime is using so I
> can duplicate them in mplayer.  tvtime -v doesn't tell me (I think) nor
> is mplayer -v helpful.
> I have tried the sound with PulseAudio installed and removed.  No
> difference.

<enormous skip>
> P.S.  I am starting a new thread because a lot of information has
> changed since my original thread.
> --
> Regards Bill
> Fedora 10, Gnome 2.24.3
> Evo.2.24.5, Emacs 22.3.1

Hi Bill.

I did a whole bunch of googling about your problem with the sound, and did 
find this on the v4l wiki for DVB. See below for link, etc.


The suggestion is to load the following module, which affectively will create 
another soundcard for capture from the TV card.

modprobe cx88-alsa

For me, that also installed the cx88 module, and another bunch of modules 
related to v4l. As I don't have your TV card, or any TV card on this machine, 
I suspect the only extra modules you will see in lsmod is cx88, and 
cx88-alsa. You may now see 2 cards listed from the following command.

cat /proc/asound/cards

If by some miracle you do, alsamixer as below should access controls for the 
second card.

alsamixer -D hw:1        (F4 again, if there are any capture controls)

The wiki link above suggests setting an alias line for cx88-alsa, and an 
options line so that on bootup it's set as card1. Some modules create 
problems and try to grab card0, which would create a conflict with your 
onboard soundcard which is set to use card0.

There is no /etc/modprobe.conf file in F10, and not being sure where to add 
lines in /etc/modprobe.d's files, I simply created a modprobe.conf file 
in /etc, so that I could place an options line for my usb midi keyboard, and 
it appears to work ok. I would suggest that you might do the same, and add 
the following lines to it.

alias snd-card-1 cx88-alsa
options cx88-alsa index=1

I don't know if the alias line will work for you, it didn't for me, but I 
don't have the TV card, so all the other stuff that your lsmod shows as being 
loaded, may be necessary for the alias line to work correctly.

If after a reboot, the cx88, and cx88-alsa modules are not loaded, I would 
suggest adding the following line to /etc/rc.d/rc.local, reboot, and check 

modprobe cx88-alsa

Also check cat /proc/asound/cards again, and see if 2 cards are showing.

This is only a shot in the dark, but the cx88-alsa module may fix the sounds.

All the best.


[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]