Hi,
I've been having this problem for some time:
when changing the volume, scrolling text, moving windows, and on various other actions performed in X,

I get a buzzing sound in the right audio channel.

It's so annoying that it's about to drive me crazy.
I tracked down the problem to OpenGL in X (don't ask how, intuition). So,

when the GLX extension is enabled I get this annoying problem.

When it's disabled the buzz goes away.
This is rather strange in my opinion. I'm not sure how GLX interferes with sound performance...

I'm using:
Slackware 10.2 pretty much upgraded to current
Sound Card: VIA 8273
Video Card: Radeon 9200
Xorg: 6.9.0
Kernel: 2.6.19
ALSA: 1.0.9b

Any idea how I could go around this problem would be appreciated.

I have same problem under Gentoo (2.6.20-ck1) ,but i have
Nvidia FX 5200 ,and VIA 8273 sound card.



00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South]
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
00:11.6 Communication controller: VIA Technologies, Inc. AC'97 Modem Controller (rev 80)
00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 78)
01:00.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] (rev a1)


Alsa version 1.0.14rc1
Xorg 7.1
Motherboard: Asus A7V600-X