Casey Bralla on 7 Jul 2008 20:12:59 -0700

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[PLUG] USB Hub Blocks Web Cam

Here's a weird one I don't understand.  Maybe somebody can help me understand 
what is going on.

I've been goofing around with a Logitech QuckCam I got a while ago "free" from 
comcast.   It's well supported by Linux, although anything but great image 

Anyway,the darn thing wouldn't work and I finally figured out that it was 
because it was being hooked up through a USB hub.   If I plugged it directly 
into my computer, it worked fine (well, as good as it ever would).  If I 
plugged it into a hub, it would not produce an image.   

lsusb sees it through the hub, but I couldn't get xawtv to pull an image from 

I duplicated the problem with another hub, and got the same result.  One of 
the hubs was powered, one was static.

Can anybody explain this?  I'd like to use it through a hub (much cleaner 
wiring), but I don't even know what type of hub (if any) I should buy to make 
it work.

Any comments, prognostications, disertations, or suggestions would be very 
much appreciated.

Casey Bralla
Chief Nerd in Residence
The NerdWorld Organisation
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