[AG-TECH] Logitech Pro 4000 w/linux q

Fred Dech fdech at uchicago.edu
Fri Sep 3 09:33:36 CDT 2004


hi.

i finally stole a webcam (Logitech QuickCam Pro 4000) from a Windows box
and stuck it into the USB port of as newly rebuilt Fedora C2 machine.

i do have pwc module on my system.  but when i try and view with either
xawtv --device /dev/video0 or with VIC i get solid black with xawtv and
'green' with VIC/VideoService or VIC/VideoProducerService.

xawtv gives me a bunch of:
ioctl: VIDIOCMCAPTURE(frame=0;height=120;width=160;format=5): Invalid argument
ioctl: VIDIOCMCAPTURE(frame=0;height=120;width=160;format=4): Invalid argument
ioctl: VIDIOCMCAPTURE(frame=0;height=120;width=160;format=1): Invalid argument
ioctl: VIDIOCMCAPTURE(frame=0;height=120;width=160;format=13): Invalid argument

and VIC gives me trillions of:
ioctl VIDIOMCAPTURE: Invalid argument
ioctl VIDIOCSYNC: Invalid argument
ioctl VIDIOMCAPTURE: Invalid argument
ioctl VIDIOCSYNC: Invalid argument
ioctl VIDIOMCAPTURE: Invalid argument
ioctl VIDIOCSYNC: Invalid argument
ioctl VIDIOMCAPTURE: Invalid argument
etc.

i rebuilt and installed the kernel modules with a newer version of pwc,
pwc-9.0.2, hoping that that might fix the problem.  it didn't.

does anyone see an obvious issue here that i'm missing?
i don't understand what is going on with ioctl.
can anyone suggest actions i might try in order to isolate and destroy
this problem?

thanks!

--fred




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