And here's what my USB flash drive shows:
azr...@laptop:~$ sudo lsusb -vv -d 13fe:1d00
Bus 001 Device 007: ID 13fe:1d00 Kingston Technology Company Inc. DataTraveler
2.0 1GB/4GB Flash Drive / Patriot Xporter 4GB Flash Drive
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x13fe Kingston Technology Company Inc.
idProduct 0x1d00 DataTraveler 2.0 1GB/4GB Flash Drive / Patriot
Xporter 4GB Flash Drive
bcdDevice 1.00
iManufacturer 1
iProduct 2 USB DISK 2.0
iSerial 3 07741BB40046
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 200mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk (Zip)
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
So you have 2 places in lsusb -vv where it shows if its bus powered or
not: "Device status" and "bmAttributes".
--
"Unmount" in volume right-click menu, is tech-speak and undiscoverable
https://bugs.launchpad.net/bugs/28835
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