Re: Hard disk on USB 3.0 hub not reliable with Linux 3.3, but was with 3.2

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On Tue, 20 Mar 2012, Sarah Sharp wrote:

> > [51966.342952] usb 1-1.3: new high-speed USB device number 4 using xhci_hcd
> > [51966.343455] usb 1-1.3: Device not responding to set address.
> > [51966.547065] usb 1-1.3: Device not responding to set address.
> > [51966.750407] usb 1-1.3: device not accepting address 4, error -71
> > [51966.767235] hub 1-1:1.0: unable to enumerate USB device on port 3
> > [51967.111384] usb 2-1.3: new SuperSpeed USB device number 7 using xhci_hcd
> > [51967.129904] usb 2-1.3: New USB device found, idVendor=18a5, idProduct=022e
> > [51967.129910] usb 2-1.3: New USB device strings: Mfr=10, Product=11, SerialNumber=3
> > [51967.129914] usb 2-1.3: Product: Portable USB 3.0 Drive
> > [51967.129917] usb 2-1.3: Manufacturer: Verbatim
> > [51967.129920] usb 2-1.3: SerialNumber: 200513111728
> 
> It looks like the USB 3.0 device disconnected and then reconnected.
> There's not much I can do to fix that.  I'm not sure what changes from
> 3.2 to 3.3 would make the USB 3.0 hub report a disconnect.

Actually it connected at high speed and then a fraction of a second 
later reconnected at SuperSpeed.  Probably a hardware thing and not 
directly related to the problem at hand.

Alan Stern

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