G35: crosstalk from integrated GPU to sound chip

Rainer Dorsch rdorsch at web.de
Sun Jun 8 05:25:32 PDT 2008


I am running Debian lenny on a G35 chipset (ASUS P5E-VM HDMI) and I observed 
that the sound chip (?) picks crosstalk from the integrated GPU.

It continously picks some noise. When one or several blocks of the screen 
change, I can hear a "clack" sound. Also when I run glxgears the noise level 
increases significantly.

The noise does not change when I plug off the DVI/HDMI cable at the computer 
or when I use a headset instead of the speakers. Thus I think the crosstalk 
happens inside the system. The glxgears setup indicates that it has something 
todo with the integrated GPU.

Anybody seen something like this before?

Any suggestions are welcome.


Rainer Dorsch
Lärchenstr. 6
D-72135 Dettenhausen
email: rdorsch at web.de
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