Re: [pwc] Lots of underflow messages with hub/extension cable

[Luc Saillard <>]

On Mon, Sep 19, 2005 at 12:10:18PM +0200, Carlo E. Prelz wrote:
> Hallo there. I have been successfully using a Logitech camera. The
> camera is identified as Logitech QuickCam 4000 Pro USB webcam.
 
> Is maybe there any sensitive tuning to make on the driver? I am using
> kernel 2.6.12.6 on an Athlon64-based machine, based on the ATI
> Xpress200 chipset. The application is self-developed, using a simple
> V4l interface. More details on request.
 
Hum i can't help you. The driver ask to the USB stack to get some frames, but
if the hub lost most of them ... i can't do something. Perhaps try to
activate some option like USB speed limit or something like that.

Luc
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