excerpts of lsub Bus 003 Device 003: ID 0bc7:0004 X10 Wireless Technology, Inc. X10 Receiver Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x0bc7 X10 Wireless Technology, Inc. idProduct 0x0004 X10 Receiver bcdDevice 1.00 iManufacturer 1 X10 Wireless Technology Inc iProduct 2 USB Receiver Bus 003 Device 001: ID 0000:0000 Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 0 Full speed hub bMaxPacketSize0 64 idVendor 0x0000 idProduct 0x0000 bcdDevice 2.06 iManufacturer 3 Linux 2.6.22-14-generic uhci_hcd iProduct 2 UHCI Host Controller iSerial 1 0000:00:1a.2 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0002 1x 2 bytes bInterval 255 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 2 wHubCharacteristic 0x000a No power switching (usb 1.0) Per-port overcurrent protection bPwrOn2PwrGood 1 * 2 milli seconds bHubContrCurrent 0 milli Ampere DeviceRemovable 0x00 PortPwrCtrlMask 0xff Hub Port Status: Port 1: 0000.0100 power Port 2: 0000.0303 lowspeed power enable connect Device Status: 0x0003 Self Powered Remote Wakeup Enabled johnf@frontend:~$ sudo lsusb -v | egrep "^Bus|hci" Bus 008 Device 001: ID 0000:0000 iManufacturer 3 Linux 2.6.22-14-generic ehci_hcd Bus 007 Device 001: ID 0000:0000 iManufacturer 3 Linux 2.6.22-14-generic ehci_hcd Bus 006 Device 001: ID 0000:0000 iManufacturer 3 Linux 2.6.22-14-generic uhci_hcd Bus 001 Device 001: ID 0000:0000 iManufacturer 3 Linux 2.6.22-14-generic uhci_hcd Bus 002 Device 001: ID 0000:0000 iManufacturer 3 Linux 2.6.22-14-generic uhci_hcd Bus 003 Device 003: ID 0bc7:0004 X10 Wireless Technology, Inc. X10 Receiver Bus 003 Device 001: ID 0000:0000 iManufacturer 3 Linux 2.6.22-14-generic uhci_hcd Bus 005 Device 005: ID 05ac:0204 Apple Computer, Inc. Bus 005 Device 004: ID 05ac:1002 Apple Computer, Inc. Apple Extended Keyboard Hub [Mitsumi] Bus 005 Device 001: ID 0000:0000 iManufacturer 3 Linux 2.6.22-14-generic uhci_hcd Bus 004 Device 001: ID 0000:0000 iManufacturer 3 Linux 2.6.22-14-generic uhci_hcd johnf@frontend:~$ cat /proc/acpi/wakeup Device S-state Status Sysfs node SLPB S4 *enabled P32 S4 disabled pci:0000:00:1e.0 UAR1 S4 disabled pnp:00:08 ILAN S4 disabled pci:0000:00:19.0 PEGP S4 disabled pci:0000:00:01.0 PEX0 S4 disabled pci:0000:00:1c.0 PEX1 S4 disabled pci:0000:00:1c.1 PEX2 S4 disabled pci:0000:00:1c.2 PEX3 S4 disabled pci:0000:00:1c.3 PEX4 S4 disabled pci:0000:00:1c.4 PEX5 S4 disabled UHC1 S3 disabled pci:0000:00:1d.0 UHC2 S3 disabled pci:0000:00:1d.1 UHC3 S3 disabled pci:0000:00:1d.2 UHC4 S3 disabled EHCI S3 disabled pci:0000:00:1d.7 EHC2 S3 disabled pci:0000:00:1a.7 UH42 S3 disabled pci:0000:00:1a.0 UHC5 S3 disabled pci:0000:00:1a.1 UHC6 S3 disabled pci:0000:00:1a.2 AZAL S3 disabled pci:0000:00:1b.0