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tommyk
Asked: 2012-12-12 03:05:18 +0800 CST

lsusb - where device description comes from

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For one of my attached USB devices (2773:0104) I see no description in lsusb command output:

user@Thinkpad-Laptop:~/binaries$ lsusb
Bus 008 Device 002: ID 0a5c:217f Broadcom Corp. 
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 036: ID 2773:0104

Where USB description is comming from, is it from device driver or is it stored in the hardware itself ?

usb

2 Answers

  1. Best Answer

    The device identifies itself only with the ID value. This is made up with a 2-byte code (4 hex digits) identifying the manufacturer (eg, 0a5c for Broadcom), followed by a 2-byte product identity (217f).

    Ubuntu uses the database maintained here. If you have a piece of hardware not identified by the current version of this file, you could tell them about it. The manufacturer ID 2773 currently has no entry.

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  2. It comes from the id given through the usbbus from the device. The description comes from /var/lib/usbutils/usb.ids.

    To get such an information I advise you to simply use man lsusb.

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