Re: USB camera has "no usable YUV encodings"

> Thanks for the tips. Here is what they do
> on video1 (the USB microscope camera).

During these tests, this appeared in the messages:

uvideo1 at uhub0 port 1 configuration 1 interface 0 "Alcor Micro MikrOkularHD" rev 2.00/0.00 addr 4
video1 at uvideo1
uvideo1: could not open VS pipe: IOERROR
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255
uvideo1: could not SET probe request: TIMEOUT
xhci0: wrong trb index (4134157312) max is 255

Can somebody please advice on what these mean?

Jan