On Mon, 28 Jul 2003 22:05:41 +0200
"Nemosoft Unv." <[EMAIL PROTECTED]> wrote:
Hi Nemosoft,
> > (pwc driver dies immediately when IDE disk (or CompactFlash) is accessed
> > in PIO mode in any 2.4 kernel).
>
> Not surprising. PIO is sloooooooooow. It will hog your CPU/PCI bus long
> enough to give the USB controller a serious constipation problem.
>
> > There was a thread a couple of weeks ago on this subject. Several
> > experiments were done. It is not clear to me if there was a conclusion
> > on what the cause of this problem is (pwc driver, OHCI, ?).
>
> Actually, it might be IDE. Maybe you can play a bit with the PCI latency
> settings, give the USB controller a higher priority (lower latency) on your
> PCI bus.
But the interesting thing is that it only happens with the *pwc* driver.
Several other (non-pwc) webcams were reported not to have the problem.
I'll try the PCI latency thing though.
greetings,
Rob van Nieuwkerk
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