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Can't get camera working on MacBook 8.2 and linux guest

Posted: 4. Jan 2012, 19:18
by smorlat
Hi,

I'm running an Ubuntu 11.10 64 bits within a virtualbox running in a MacBook pro 8.2 with macos X lion host.
Despite the macbook's camera is successfully enabled in the usb filters (and usb 2.0 activated), the linux kernel complains about usb timeouts (errno 110), as follows:

[ 31.628243] usb 1-1: device descriptor read/64, error -110
[ 31.856250] usb 1-1: new high speed USB device number 3 using ehci_hcd
[ 47.008908] usb 1-1: device descriptor read/64, error -110

or sometimes:

[ 26.312467] uvcvideo: Failed to query (129) UVC probe control : -110 (exp. 26).
[ 26.312472] uvcvideo: Failed to initialize the device (-5).

I have IO-APIC enabled and 4 processors configured (the host has 8). If I set the number of processor to 1, it works well, so it seems to be SMP related. When I try 8, it still fails.

Any hints ? I could not find any relevant information on the web.
It would be nice to be able to use more than 1 processor on the linux guest.

Thanks for your help.

Simon