Hi, On Monday 28 July 2003 22:41, Rob van Nieuwkerk wrote: > 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.
That's indeed interesting, but still doesn't bring me any further :-( BTW, have you tried PWC 8.11 yet? What you could try is using maximum tracing in the pwc driver, see what's last in the log before it hangs. Also, using 'ps -l', see where the tool that's using the cam hangs (see the WCHAN column). I really need to pinpoint the line in the code where it stops. - Nemosoft ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
