I have Logitech Z-640 5.1 surround speakers and NF7-S motherboard with integrated 5.1 sound card (NVidia nforce2 chip) and Mandrake 10.0. I installed the newest nForce2 1.0-0283 drivers from NVidias website. I only get sound from 2 speakers (front left & right) and subwoofer, nothing from center or rear speakers. Hardware is ok, works fine with Windows XP.

When I run the nvmixer program, the "speaker wizard" option is grayed out and switching to 5.1 setting doesn't do anything. In "surround settings" there are only two options, coding none or clone. If I check the clone option, then the center speaker works (probably mixes the (not working) rear channels). Everything else is grayed out.

The same problem was with the drivers that came out-of-the-box with Mandrake, only 2 channels there as well.

Any suggestions?

kharmaslaw; did u check whether speaker system & motherboard are compatibitable with mdk10. if not check http://tldp.org/HOWTO/Hardware-INDEX/compatiable motherboards & external speakers(surround sound ) . if they are then check this (3) issues; kernel module, permission & configuration. those that are eliminated are ok that would leave the problem which u will have to discover.

I have almost the exact same problem. I'm running FC2 and I use Zalmans Theatre 6 headphones. I have just d/l Nvidias latest drivers for nforce2. 2-channel sound works fine. When I start nvmixer both the "speaker wizard" option and "surround settings" are grayed out and switching to 5.1 setting doesn't do anything.

Very grateful for any information on how to solve this.

Peter

Have you added the new NVIDIA modules to the modules configuration file (as specified in the release notes)?

If you have kernel version 2.4 the file is /etc/modules.conf
If you have kernel series 2.6 the file is /etc/modprobe.conf (I believe MDK10 has this)

Add the following lines to the end of this file:

If there is an entry for the i810_audio, snd-intel8x0, or nvaudio driver (an open-source audio driver that supports the nForce audio controller), that entry needs to be commented out or removed.

Similarly, if there is an entry for the forcedeth driver (an open-source network driver that supports the nForce network controller), that entry needs to be commented out or removed.

This seemed to fix the problem for me. For more reference read the nForce Linux Driver Release Notes

Hi,

On my SuSE 9.1 system the audio settings in the /etc/modprobe.d/sound file had to be changed. All modprobe settings are not in the mudprobe.conf file.

I also got problems with aRts in KDE. Have not solved this yet aither...

I still have some problemsplaying movies though as the playback is stuttering and eventually the sound fails.


regarda birger....

And....

In KDE 3.2 Controll sentre I had to set the sound system manually to Threaded Open Sound System.

Now I only need to resolve the Mplayer issues :-)

regards birger....