[AG-TECH] Webcam on FC2

Michael Miller myk at ncsa.uiuc.edu
Mon Dec 6 15:33:54 CST 2004

Ahh, ok,  when I ran yum update AccessGrid  it didn't do anything, so I 
assumed I had the latest version.  Do I need to poke something to get yum 
to grab the -6 ?


At 03:14 PM 12/6/2004, Douglas Kosovic wrote:
>Hi Michael,
>>I'm trying to get my Logitech Quickcam Pro 4000 working in FC2.  I have 
>>the 2.6.9 kernel and I can  see that the camera is recognized as the 
>>venue client starts:
>>But once vic is launched I get this:
>>v4l: mmap()'ed buffer size = 0xe1000
>>Got pict, palette=15
>>ioctl VIDIOCSPICT: Invalid argument
>>Got pict again, palette=15
>>V4lGrabber::start() ioctl VIDIOCMCAPTURE even: Invalid argument
>>V4lGrabber::start() ioctl VIDIOCMCAPTURE odd: Invalid argument
>Are you using AccessGrid-2.3-5.i386.rpm by any chance? I broke webcams 
>based on the pwc driver (or more generally devices
>that only support YUV420) in that release after adding support for 
>Kensington webcams (and other RGB24 capture devices). See:
>  http://bugzilla.mcs.anl.gov/accessgrid/show_bug.cgi?id=1203
>AccessGrid-2.3-6.i386.rpm works with both pwc driver webcams and RGB24 


Michael Miller
System Engineer
Visualization Technology Support
Computing and Data Management
National Center for Supercomputing Applications
University of Illinois - UC

"If you're clear in your vision and trust the people in your team with 
clear objectives, they will invariably do their best to achieve everything 
desired, and usually deliver everything you could have hoped for and even 
more." -Paul Debevec

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