Hello,
after experimenting with a very cheap webcam I recently bought a Logitech C310 for a project.
On my Alienware m11xr2 laptop under Ubuntu 11.10 it runs great: 30fps of 640x480, no problem when I run guvcview (after setting the exposure to manual, that is).
On my desktop (self-assembled with an Asus P8Z68-M PRO board, an i7-4core and an NVIDIA gx580 card) under Kubuntu 12.04 to my big surprise it maxes out at exaclty 16fps, whatever I try: also smaller resolutions, all format options, I tried all the controls I could find, but no difference.
I am very much surprised by this, since I built my desktop system to be fast. I can think of two explanations, but I have no idea if they make sense and how I can resolve this:
- is there some kind of regression in the newer kernel that is used in 12.04 ? very unlikely ?
- could it be that I have slow usb-controller or that usb is not working on its full speed ? How can I check or set this ? The motherboard only has usb 2.0 or 3.0 connections it says in the specs and i tried them both with no difference.
or if there are other plausible explanations I would be very curious to hear them. Kind regards,
Joost.
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