Comment 25 for bug 622168

I have recompiled a new kernel grom the git tree - 2.6.32-25, with the only configuration change being the drivers ehci_hcd and uhci_hcd being module instead of in the kernel.

By rmmod ehci_hcd followed by modprobe ehci_hcd, the webcam sometimes springs into life. (and sometimes not)

By removing the module, the webcam attaches to slow speed USB and fails (logic in em28xx). modprobing em28xx causes the webcam to attach again to the slow speed USB again (and fail) or attach to the high speed USB and therefore work correctly. At least by using modules, I can avoid having to reboot to alter the state of the drivers.

If you would like the dmesg and/or /var/log/messages, please let me know. (the logs look very similar to successful and unsuccessful logs attached above)

good luck