Public bug reported:
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-lts-quantal (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1091532
Title:
Usb device not enumerated by xhci, working on older systems
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