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[b3nmore <1254261@xxxxxxxxxxxxxxxxxx>]

Same drive on saucy when using the usb 2 port.

** Attachment added: "dmesg_3.11_usb2_success"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254261/+attachment/3915432/+files/dmesg_3.11_usb2_success

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https://bugs.launchpad.net/bugs/1254261

Title:
  xhci regression: usb 3.0 hdd disconnects immediately

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  On a fresh saucey installation (kernel 3.11), I can not use my
  external usb 3.0 hdd on usb 3.0 ports, it only works on usb 2 ports.
  kernel log shows, that it disconnects immediately after it is plugged
  in. Then it continues to connect and disconnect indefinitely (q.v.
  attached dmesg log):

  [ 2623.116141] usb 3-5: new SuperSpeed USB device number 2 using xhci_hcd
  [ 2623.132574] usb 3-5: New USB device found, idVendor=1058, idProduct=0740
  [ 2623.132582] usb 3-5: New USB device strings: Mfr=1, Product=2, SerialNumber=5
  [ 2623.132587] usb 3-5: Product: My Passport 0740
  [ 2623.132591] usb 3-5: Manufacturer: Western Digital
  [ 2623.132595] usb 3-5: SerialNumber: 575847314139315836343531
  [ 2623.133533] usb-storage 3-5:1.0: USB Mass Storage device detected
  [ 2623.133758] scsi7 : usb-storage 3-5:1.0
  [ 2624.299678] usb 3-5: USB disconnect, device number 2
  [ 2645.281554] scsi 7:0:0:0: Device offlined - not ready after error recovery
  [ 2645.281727] usb 3-5: Set SEL for device-initiated U1 failed.
  [ 2645.281730] usb 3-5: Set SEL for device-initiated U2 failed.
  [ 2645.521559] usb 3-5: new SuperSpeed USB device number 3 using xhci_hcd
  ...

  The same hw combination works with kernel 3.2 in precise, but not with
  3.8 (see attachments below). I even tried 3.12 coming with trusty, but
  got the same log messages as with 3.11.

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