Until the other day, my soundcard was detected and I had no problems playing sounds. Now, within the last 2 days, I find that there is no sound. The soundcard detection does show that I have a VIA Technologies VT8233/A/8235/8237 AC Audio Controller, Module snd-via82xx, but the test sound does not play.

My system log reports : (first lines may or may not be related)
Jul 12 15:49:24 localhost bonobo-activation-server (bob-2661): iid OAFIID:BrokenNoType:20000808 has a NULL type
Jul 12 15:49:24 localhost bonobo-activation-server (bob-2661): invalid character '#' in iid 'OAFIID:This#!!%$iid%^$%_|~!OAFIID_ContainsBadChar s'
Jul 12 15:49:27 localhost modprobe: FATAL: Error running install command for sound_slot_1

However, this has been reported since installation, (7/8/04) when my soundcard was detected and played perfectly.

My /etc/modprobe.conf shows this:

alias eth0 8139too
alias snd-card-0 snd-via82xx
install snd-via82xx /sbin/modprobe --ignore-install snd-via82xx && /usr/sbin/alsactl restore >/dev/null 2>&1 || :
remove snd-via82xx { /usr/sbin/alsactl store >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-via82xx
alias usb-controller ehci-hcd
alias usb-controller1 uhci-hcd
alias char-major-195* nvidia

Sound works perfectly with Windoze XP on same machine.

I'd appreciate any help or suggestions that you have on this one!

I have the exact same problem. The card did work with SuSe and has worked forever in Windows XP. I know that a lot of other people running Fedora have had problems with their sound cards. If you have one, you might try a different card and see if that helps.

For the sake of it, here's the contents of my etc/modprobe.conf file:

alias eth0 e100
alias snd-card-0 snd-intel8x0
install snd-intel8x0 /sbin/modprobe --ignore-install snd-intel8x0 && /usr/sbin/alsactl restore >/dev/null 2>&1 || :
remove snd-intel8x0 { /usr/sbin/alsactl store >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-intel8x0
alias usb-controller uhci-hcd

I found the same problem after upgrading to kernel 2.6.7
I found out that the volume output was turned way down. Try opening kmix (or what seems to be the prefered alsamixer) and turning up the sound til you hear something.
Hope this helps

I tried turning up all the volume controls. The noise (static) on the speakers got louder as the volume increased, but there was no sound from the OS.

For some magical reason, when I installed the Nvidia drivers for my GPU, my sound came back!

I think this has less to do with the drivers, but a lot to do with my xorg.conf file. It contains info about all kind of hardware (monitor, sound, mouse, keyboard, kitchen sink). I had to modify it to enable the Nvidia drivers to function, and it might have fixed the sound.

The only thing I changed from the default, other than the graphics driver, was removing th line ' Load "dri" ' from the "Module" section.

If that doesn't work, investigate some of the sound settings, they might have been changed by accident since you last heard sound.

Twinkle, I'm happy for you, but no luck for me. The reason for my re-install on 7/8 was to get the Nvidia driver to work, which it did, but that's about when my sound stopped working. I also did the same changes in xorg.conf that you did. I did get sound when I tried out the driver to play Tux Racer, but haven't really checked it since then. I've tried alsamixer - dead silence.

One other file that I can find that has a bearing on my problem is the /etc/modprobe.conf.dist which has the following entry:
install sound-slot-* /sbin/modprobe snd-card-${MODPROBE_MODULE##sound[_-]slot[_-]}

Still hoping that someone has the answer out there....

I don't know if you've seen it yet, but there is another thread discussing sound issues.

http://www.linuxquestions.org/questi...hreadid=185411

It's pretty in depth. You'll probably find your answer in there.

PROBLEM SOLVED!!!! It turned out that the K-Mix advanced settings in KDE were turned down to minimum, even though I have been working 90% of the time in Gnome. Somehow, once you try the KDE environment, those settings cross over to Gnome as well. Thanks to all who tried to work through this.