Re: GX1-CS5530 sound problem !!!

From: Tech Support for IDE-CF (tech_at_ide-cf.info-for.us)
Date: 06/12/04 

Date: 12 Jun 2004 09:09:06 -0700

Jürgen Querengässer <msg1000@web.de> wrote in message news:<2hjg7kFdp1o5U1@uni-berlin.de>...
> Laurent Grassay wrote:
>
> > I try it and it works fine
> > But in one case, I have a message "Sound: DMA timed out possible IRQ/DRQ
> > conflict? " and it does'nt work

We found that if you are running heavy sound I/O, i.e. mp3 and video
at the same time, the geode interrupt stack gets confused.

> > I reboot it but I always have this problem...
> > I have to power off the card so that it works fine again ...
> >
>

...

> I would try to detect which device causes the IRQ or DMA-Request conflict
> (/proc/interrupts, /proc/dma) and then to assign the soundcard (or the
> conflict-device) an other IRQ resp. DMA (in the BIOS and lilo.conf)

The conflict is inside the geode companion chip, there is nothing you
can do about it.

Our solution is to put it in graphic mode (even for simple text
display) for mp3. X appears to have less latency than the Geode's
Virtual VGA system. However, it does take up much more system memory.
 On the plus side, system memory seems to be faster than the bios
memory anyway.

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