[Bug 622168] Re: webcam "device initialization failed" in lucid (needs high-speed USB 2.0 port) but has worked in past on lucid

[Kim Tyler]

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

-- 
webcam "device initialization failed" in lucid (needs high-speed USB 2.0 port) but has worked in past on lucid
https://bugs.launchpad.net/bugs/622168
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