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on dmesg output i have:

[209695.816037] usb 4-2: new full speed USB device using uhci_hcd and address 4
[209696.749549] usb 4-2: New USB device found, idVendor=047f, idProduct=d955
[209696.749555] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[209696.749559] usb 4-2: Product: Plantronics Wireless Audio
[209696.749563] usb 4-2: Manufacturer: Plantronics Wireless Audio
[209696.749693] usb 4-2: configuration #1 chosen from 1 choice
[209696.763859] input: Plantronics Wireless Audio Plantronics Wireless Audio as /devices/pci0000:00/0000:00:1d.2/usb4/4-2/4-2:1.3/input/input8
[209696.764097] generic-usb 0003:047F:D955.0004: input,hiddev0,hidraw1: USB HID v1.01 Device [Plantronics Wireless Audio Plantronics Wireless Audio] on usb-0000:00:1d.2-2/input3

but nothing shows up on lsusb

why is that? i had problems with modules not available, but it always showed up on lsusb...

this is a debian squeeze host. on ubuntu it works. same thing appears on dmesg, but i can see the device in lsusb, and it is actually activated with the correct module.

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Can you mount the device? – Garrett Nov 19 '11 at 5:41
not a mass storage. it's a device that has two profiles. HID and usb audio. ...it's a platronics 995H headphone with buttons. it works just fine in ubuntu, not in debian. – gcb Nov 22 '11 at 2:46
didn't want to make this question device specific... mostly wanted to understand where to look at when something does not show up on lsusb. i guessed it only depended on the usb root drivers to find out devices ID strings. – gcb Nov 22 '11 at 2:47
lsusb reads directly from /proc/bus/usb so I've no idea why it would show in dmesg but not there. – Garrett Nov 28 '11 at 18:28
if it's present during boot, it appears on lsusb... "Bus 003 Device 002: ID 047f:d955 Plantronics, Inc." – gcb Nov 28 '11 at 22:41
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