DV audio/video sync

[Hidetoshi Shimokawa]

Warner-san,

I suppose this problem cames from poor card bus performance.
Are there any tuning parameters like latency timer or cache line size of
PCI bridge for cardbus bridge?

Thanks,

/\ Hidetoshi Shimokawa
\/  simokawa at sat.t.u-tokyo.ac.jp
PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html

At Thu, 24 Apr 2003 20:51:55 -0400 (EDT),
Wesley Morgan wrote:
> 
> On Fri, 25 Apr 2003, Hidetoshi Shimokawa wrote:
> 
> > Are there any messages in dmesg?
> > (IR DMA overflow etc.)
> 
> None that I can see. If I enable the debug.firewire_debug sysctl, the only
> message is "start IR DMA 0x0". I do get "x blocks padded" every so often..
> 
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At Thu, 24 Apr 2003 16:44:49 -0400 (EDT),
Wesley Morgan wrote:
> 
> Well, I've got fwcontrol properly dumping the DV streams, but I have a
> lot of trouble with video artifacts, AV sync, and pops/hisses/screeches in
> the audio. Is this because it's too much data for a cardbus firewire card
> (or maybe my laptop?) to handle, or because the scheduler is causing data
> loss?
> 
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