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[Launchpad Bug Tracker <1091532@xxxxxxxxxxxxxxxxxx>]

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My USB2.0 cameras are enumerated fine on ehci systems (older Ubuntus). But not on my new Ubuntu 
12.10:
$uname -a
Linux VAIO 3.5.0-18-generic #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012 x86_64 
x86_64 x86_64 GNU/Linux

here xhci_hcd is compiled in the kernel, and the device is not enumerated. I 
tried unbinding xhci using the sysfs and the messages dissapear, but ehci does 
not take over. Any idea?


[12241.536789] usb 3-1: new high-speed USB device number 8 using xhci_hcd
[12241.553375] usb 3-1: device descriptor read/8, error -75
[12241.673302] usb 3-1: device descriptor read/8, error -75
[12241.888420] usb 3-1: new high-speed USB device number 9 using xhci_hcd
[12241.905029] usb 3-1: device descriptor read/8, error -75
[12242.024764] usb 3-1: device descriptor read/8, error -75
[12242.240032] usb 3-1: new high-speed USB device number 10 using xhci_hcd
[12242.256595] usb 3-1: device descriptor read/8, error -75
[12242.376524] usb 3-1: device descriptor read/8, error -75
[12242.591580] usb 3-1: new high-speed USB device number 11 using xhci_hcd
[12242.608170] usb 3-1: device descriptor read/8, error -75
[12242.727987] usb 3-1: device descriptor read/8, error -75
[12242.831348] hub 3-0:1.0: unable to enumerate USB device on port 1

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Incomplete

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Usb device not enumerated by xhci, working on older systems
https://bugs.launchpad.net/bugs/1091532
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