[linux-audio-user] new computer woes

[Jan "Evil Twin" Depner]

Anthony,

	I had some problems with the accelerated NVIDIA driver so I turn it off
when I'm working with Ardour (this is a pain in the backside but it
helps).  Also, if you're running the accelerated driver it kicks the
latency timer to 248 for the video card.  I shut that (and everything
else) down to 32 and kicked the sound card to 248.  My video card is AGP
but maybe setting the sound card timer to 248 could help you as well.

Jan

On Fri, 2002-12-20 at 04:15, Anthony wrote:
> 
> Thought I'd post to see if anyone has any advice. I've just built a
> new SMP machine: Asus A7M266-D, 1.0 Ghz Athlons * 2. I got some nice
> fans from endpcnoise.com (Molex) that are virtually silent and a Power
> Supply which is louder than what I'd hope but very reasonable for
> 400W's I suppose (dunno). 
> 
> I installed gentoo, latest alsa, etc... Unfortunately playback is
> distorted during video load. It is *not* a CPU load issue - I can
> playback just fine while compiling the kernel with make -j3. If I
> scroll pages up and down in galeon the sounds slows down :o. Jack
> doesn't report Xruns but sometimes delays when I do this. This occurs
> both with the onboard C-media chip and my Delta 44.
> 
> I struggled for a long time to get the IRQ's not to share. I tried all
> the suggestions in the Audio Quality HOWTO. The video card is a PCI
> GForce 2. It was in my old machine and didn't cause any problems
> (while my old onboard AGP did create some noise). The only thing I can
> find is the PCI Latency settings are all set to 32. This seems odd I
> suppose, so I tried higher settings for the video to give it more
> bandwith and other variations with no success.
> 
> I might go out and buy an inexpensive AGP card tomorrow, but I'd hate
> to find out the problem is deeper than that. Kernel is 2.4.20 vanilla
> tried with and without lowlat. Maybe I should back down to 2.4.19? Any
> suggestions? TIA 
> 
> --ant