sudo lshw
*-usb:0 UNCLAIMED
description: USB controller
product: 7 Series/C210 Series Chipset Family USB xHCI Host Controller
vendor: Intel Corporation
physical id: 14
bus info: pci@0000:00:14.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi xhci cap_list
configuration: latency=0
resources: memory:f7120000-f712ffff
Apenas os dois controladores USB 2.0 funcionam corretamente:
sw3@pc90313-sw3:~$ ls /dev/bus/usb
001 002
O controlador 3.0 foi listado como 004 , mas agora desapareceu de repente.
sw3@pc90313-sw3:~$ dmesg | grep USB
[ 0.156319] ACPI: bus type USB registered
[ 0.459505] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.459593] ehci-pci 0000:00:1a.0: new USB bus registered, assigned bus number 1
[ 0.472274] ehci-pci 0000:00:1a.0: USB 2.0 started, EHCI 1.00
[ 0.472286] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 0.472287] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.472355] hub 1-0:1.0: USB hub found
[ 0.472493] ehci-pci 0000:00:1d.0: new USB bus registered, assigned bus number 2
[ 0.488286] ehci-pci 0000:00:1d.0: USB 2.0 started, EHCI 1.00
[ 0.488293] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[ 0.488294] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.488364] hub 2-0:1.0: USB hub found
[ 0.488449] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.488453] uhci_hcd: USB Universal Host Controller Interface driver
[ 0.488543] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 3
[ 0.784538] usb 1-1: new high-speed USB device number 2 using ehci-pci
[ 0.916941] usb 1-1: New USB device found, idVendor=8087, idProduct=0024
[ 0.916943] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 0.917078] hub 1-1:1.0: USB hub found
[ 1.188920] usb 1-1.1: new low-speed USB device number 3 using ehci-pci
[ 1.285374] usb 1-1.1: New USB device found, idVendor=046d, idProduct=c05a
[ 1.285375] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1.285376] usb 1-1.1: Product: USB Optical Mouse
[ 1.357061] usb 1-1.2: new full-speed USB device number 4 using ehci-pci
[ 1.451516] usb 1-1.2: New USB device found, idVendor=1366, idProduct=0101
[ 1.451517] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1.521200] usb 1-1.3: new low-speed USB device number 5 using ehci-pci
[ 1.619030] usb 1-1.3: New USB device found, idVendor=046d, idProduct=c31c
[ 1.619031] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1.619032] usb 1-1.3: Product: USB Keyboard
[ 25.307285] xhci_hcd 0000:00:14.0: USB bus 3 deregistered
[ 25.358978] usbhid: USB HID core driver
[ 25.362327] input: Logitech USB Optical Mouse as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0/input/input2
[ 25.362388] hid-generic 0003:046D:C05A.0001: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-0000:00:1a.0-1.1/input0
[ 25.362469] input: Logitech USB Keyboard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.0/input/input3
[ 25.362517] hid-generic 0003:046D:C31C.0002: input,hidraw1: USB HID v1.10 Keyboard [Logitech USB Keyboard] on usb-0000:00:1a.0-1.3/input0
[ 25.364344] input: Logitech USB Keyboard as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/1-1.3:1.1/input/input4
[ 25.364394] hid-generic 0003:046D:C31C.0003: input,hidraw2: USB HID v1.10 Device [Logitech USB Keyboard] on usb-0000:00:1a.0-1.3/input1
[ 25.517596] usb 2-1: new high-speed USB device number 2 using ehci-pci
[ 25.650056] usb 2-1: New USB device found, idVendor=8087, idProduct=0024
[ 25.650058] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 25.650208] hub 2-1:1.0: USB hub found
O que poderia estar acontecendo?
sw3@pc90313-sw3:~$ uname -a
Linux pc90313-sw3 3.11.0-13-generic #20-Ubuntu SMP Wed Oct 23 07:38:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux