Help please with USB bandwidth on Windows XP

Forums › Microsoft Windows › Help please with USB bandwidth on Windows XP

johnnz

21 posts

Geek

#17902 17-Dec-2007 12:35

Hi everyone, I recently bought a new PC and whenever I use Skype and connect my USB Camera I receive an error message "USB Bandwidth exceeded". The only USB component that is connected besides my webcam is my printer. I searched for a solution but to no avail. I'm thinking of buying a new webcam but I'm afraid that it will still not work. I have an internal card reader, I'm thinking that this is the cause of the problem although I already disabled it. Please help me on my situation. Cheers

photoman

217 posts

Master Geek

#100433 17-Dec-2007 15:13

Based on the spec fo the PC, you should have a number of USB2 ports. Try swapping the camera to a different USB port to see if that cures the problem.

johnnz

21 posts

Geek

#100443 17-Dec-2007 15:54

Thanks for the fast reply. I have already done it to no avail, every USB port I connect the webcam to yields the same error message. Do I have to change webcams? Cheers

nairda

140 posts

Master Geek
+1 received by user: 4

#100449 17-Dec-2007 16:12

According to this page your webcam resolution may be eating up all your USB bandwidth.

johnnz

21 posts

Geek

#100461 17-Dec-2007 16:40

My webcam's resolution is 640x480, it works fine on my laptop which is an Intel Celeron. If you will look at it, it should work fine now that my PC is of higher specification. I'm staring at a brickwall regarding this matter.

... Thanks for the replies and keep 'em comin'

nairda

140 posts

Master Geek
+1 received by user: 4

#100466 17-Dec-2007 16:55

In that case, you probably should find out which device it is that takes up the most bandwidth. You can do so by going to Device Manager, right-clicking on your USB Host controller, select Properties and go to the Advanced tab.

I'd be particularly interested to know how many host controllers you have. If you have only one, then clearly you'll need to add another host controller somehow (USB cardbus if it is a laptop or a PCI USB controller if it is a desktop). Then you can move the bandwidth-eating device to your new host controller.

HTH

freitasm

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#100485 17-Dec-2007 17:58

The suggestion to add a second USB controller is actually the best alternative.

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johnnz

21 posts

Geek

#100624 18-Dec-2007 11:43

I have two USB Host controller, PCI to USB Host Controller & OpenHCD USB Host Controller. The former has System Reserved at 10% and the latter has System Reserved at 11% when I connect the webcam it uses the OpenHCD Controller.

freitasm

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#101477 23-Dec-2007 07:12

I thought this was suggested above? Glad to see it's working?

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johnnz

21 posts

Geek

#101612 24-Dec-2007 00:10

Oh, yeah, sorry about that mate. Thanks for the suggestion. I deleted the post. Cheers :)