lsusb mi nic nevrátí (divné..) a dmesg | grep -i usb mi vrátí:
[ 15.109710] usbcore: registered new interface driver usbfs
[ 15.109744] usbcore: registered new interface driver hub
[ 15.109807] usbcore: registered new device driver usb
[ 15.112361] USB Universal Host Controller Interface driver v3.0
[ 15.112701] uhci_hcd 0000:00:1a.0: new USB bus registered, assigned bus number 1
[ 15.112935] usb usb1: configuration #1 chosen from 1 choice
[ 15.112980] hub 1-0:1.0: USB hub found
[ 15.215333] uhci_hcd 0000:00:1a.1: new USB bus registered, assigned bus number 2
[ 15.215539] usb usb2: configuration #1 chosen from 1 choice
[ 15.215577] hub 2-0:1.0: USB hub found
[ 15.319177] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 3
[ 15.319388] usb usb3: configuration #1 chosen from 1 choice
[ 15.319426] hub 3-0:1.0: USB hub found
[ 15.423003] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 4
[ 15.423208] usb usb4: configuration #1 chosen from 1 choice
[ 15.423246] hub 4-0:1.0: USB hub found
[ 15.526853] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 5
[ 15.527070] usb usb5: configuration #1 chosen from 1 choice
[ 15.527111] hub 5-0:1.0: USB hub found
[ 15.558638] usb 2-1: new full speed USB device using uhci_hcd and address 2
[ 15.630739] ehci_hcd 0000:00:1a.7: new USB bus registered, assigned bus number 6
[ 15.699374] ehci_hcd 0000:00:1a.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
[ 15.699565] usb usb6: configuration #1 chosen from 1 choice
[ 15.699604] hub 6-0:1.0: USB hub found
[ 15.802494] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 7
[ 15.823226] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
[ 15.823422] usb usb7: configuration #1 chosen from 1 choice
[ 15.823462] hub 7-0:1.0: USB hub found
[ 16.094788] usb 2-1: device not accepting address 2, error -71
[ 16.645941] usb 6-3: new high speed USB device using ehci_hcd and address 2
[ 16.778415] usb 6-3: configuration #1 chosen from 1 choice
[ 17.128001] sda1 sda2 sda3 <<6>usb 2-2: new full speed USB device using uhci_hcd and address 4
[ 17.220304] usb 2-2: configuration #1 chosen from 1 choice
[ 17.371418] usb 3-2: new low speed USB device using uhci_hcd and address 2
[ 17.409485] usb 3-2: configuration #1 chosen from 1 choice
[ 25.217995] usbcore: registered new interface driver hiddev
[ 25.231005] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:1d.0/usb3/3-2/3-2:1.0/input/input8
[ 25.236417] uvcvideo: Found UVC 1.00 device USB 2.0 Camera (174f:5a35)
[ 25.279757] input,hidraw0: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:1d.0-2
[ 25.279785] usbcore: registered new interface driver usbhid
[ 25.279791] /build/buildd/linux-2.6.24/drivers/hid/usbhid/hid-core.c: v2.6:USB HID core driver
[ 25.572090] usbcore: registered new interface driver uvcvideo
[ 25.572097] USB Video Class driver (v0.1.0)