Hi Martin, On Wednesday 24 November 2010 19:24:44 Martin wrote: > On 24/11/10 17:01, Laurent Pinchart wrote: > > On Wednesday 24 November 2010 14:40:47 malef...@malefico3d.org wrote: > >> The other thing is once I detected the problem is the bandwidth, what > >> should I do ? > > > > Have you tried the FIX_BANDWIDTH quirk ? > > OK... Got to ask... > > What does the "FIX_BANDWIDTH quirk" do? (And how?)
See Paulo's answer in this mail thread. > Also... What controls whether a webcam uses USB 1.1 or USB 2? > > Is that controlled by the USB hardware? Or could a kernel driver set a > USB 2 connected device to run at USB 1.1 speed? It's controlled by the hardware. When connected to a system with USB 1.1 controller, USB 2.0 devices fall back to full-speed and low-speed modes only. Systems with a USB 2.0 controller include a companion USB 1.1 controller to support USB 1.1 devices. USB 2.0 devices using high-speed transfer are automatically connected to the USB 2.0 controller, and all other devices (USB 1.1 or USB 2.0 using full-speed or low- speed modes) are connected to the companion controller. I'm not sure if that behaviour can be controlled by software. -- Regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
