0 WD My passport drive plugged into a (blue) usb 3.0 port. I mount it and it transfers at about 14MByte/sec. Under windows 7 (I have dual boot) it transfers at about 120 to 230 MByte/sec on the same port. lsusb listing is:
Bus 008 Device 004: ID 1058:0730 Western Digital Technologies, Inc.
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 004: ID 03f0:0024 Hewlett-Packard KU-0316 Keyboard
Bus 004 Device 003: ID 0458:0007 KYE Systems Corp. (Mouse Systems)
Bus 004 Device 002: ID 046d:08b2 Logitech, Inc. QuickCam Pro 4000
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
I am using the correct port and there is no fault with the drive. All works correctly under windows 7. I am using Ubuntu 11.04 64 bit natty with all the updates. dmesg gives:
2510.028644] sd 10:0:0:0: [sdb] Assuming drive cache: write through
[ 2510.028656] sd 10:0:0:0: [sdb] Attached SCSI disk
[ 2510.152518] xhci_hcd 0000:03:00.0: WARN: Stalled endpoint
[ 2578.450633] xhci_hcd 0000:03:00.0: WARN: short transfer on control ep
[ 2578.450992] xhci_hcd 0000:03:00.0: WARN: short transfer on control ep
[ 2578.451364] xhci_hcd 0000:03:00.0: WARN: short transfer on control ep
[ 2578.451744] xhci_hcd 0000:03:00.0: WARN: short transfer on control ep
[ 2578.452119] xhci_hcd 0000:03:00.0: WARN: short transfer on control ep
[ 2578.452490] xhci_hcd 0000:03:00.0: WARN: short transfer on control ep
[ 2578.453739] xhci_hcd 0000:03:00.0: WARN: Stalled endpoint
Any help would be appreciated.