Re: CM8738 audio hampering while playing video on G450 PCI graphiccard

[Lee Revell]

On Sat, 2005-11-12 at 02:41 +0100, Mark Hurenkamp wrote:
> Now whenever there's a lot of activety (like scrolling down when I'm
> browsing on a news site like slashdot, or playing video) on the G450 (both in 
> accelerated mode, as well as in unaccelerated framebuffer mode), the audio 
> (onboard CMedia) starts to hamper. This happens regardless wether I'm using
> alsa, or oss. (using mplayer to play an mp3, but also with DivX movies
> the same problem occurs).

Sounds like a "singing capacitor".  Check the LKML archives.

It's fundamentally a hardware problem caused by vendor greed which leads
them to cheap out on components, compounded by only testing on Windows
which has a dynamic timer tick.

This can often be worked around by setting HZ=100 but you'll take a
performance and timing granularity hit.

Lee

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