On Tue, Oct 02, 2012 at 02:42:41PM -0700, Sarah Sharp wrote:
> > > USB 3.0 devices are required to support Link PM. However, some of
> > > them don't support U1, or don't support U2, or don't support either.
> > > There is no way in the USB 3.0 specification to say that a device
> > > doesn't support U1 or U2, so these devices set the U1 or U2 exit
> > > latency to the maximum possible values (10ms for U1, 2047ms for U2).
> >
> > It still failed for me. :-(
>
> Can you send me the `sudo lsusb -v` output for the device? Also, please
> see if you can get a new cable and retest.
I attached the lsusb -v output (had to use another usb3 controller to
obtain it). I can't really use another cable because it comes with its
own usb3 mini cable. All the other usb3 cables I have are the normal
sized ones (with the fatter end).
Cheers,
Don
Bus 006 Device 002: ID 1058:0730 Western Digital Technologies, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 9
idVendor 0x1058 Western Digital Technologies, Inc.
idProduct 0x0730
bcdDevice 10.16
iManufacturer 1 Western Digital
iProduct 2 My Passport 0730
iSerial 3 575837314132314434373235
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 44
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 224mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 22
bNumDeviceCaps 2
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
Latency Tolerance Messages (LTM) Supported
wSpeedsSupported 0x000e
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 1
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 0 micro seconds
bU2DevExitLat 0 micro seconds
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000002
Link Power Management (LPM) Supported
Device Status: 0x0002
(Bus Powered)
Remote Wakeup Enabled
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