USB general hub is waking up computer

Hi:

I am using Vista 64 Home Premium.

Using powercfg , I found out that the USB General Hub is waking up the computer.

Using powercfg -devicequery wake_armed, there are only several devices that can wake up the computer:

1) The Microsoft keyboard (with 2 USB ports)
2) The Logitech TrackMan (trackball) attached to one of the keyboard's two USB ports.
3) Microsoft eHOME remote control (transceiver)

I do not have anything else attached to any of the other USB ports.

powercfg does not tell me exactly which device is waking up the computer , just reporting that the USB general hub is.

I am not sure but probably it seems at certain time of day , if I have put my computer to sleep, it wakes itself up.

I have not touched the keyboard or the trackball, but the computer wakes up.

I do not have anything scheduled in the task scheduler.

Sometimes, I put my computer to sleep for 7 or more hours and it stays in sleep mode, so this waking up does not occur all the time.


I detached the ethernet cable in case I have some rootkit infection, computer still gets waken up. The "wake up computer" option for the network card is OFF, no magic packet, etc.

I have virus-and-rootkit-scanned the system, nothing found.

My question is what else can wake up the computer (via the USB )?


The other question I have :

Even with the administrator right in the command prompt, I can not turn off the trackman and the eHOME transceiver from waking up the computer using powercfg -devicedisablewake. It returns :

"You do not have permission to enable or disable device wake"

I CAN however, turn off wake-up-computer from the Microsoft USB keyboard ; but not the Logitech trackman attached to this keyboard's USB port.

The only way I can disable wake-up-computer from all these devices is from the Control Panel's device manager. I uncheck the "wake up computer" options in power management option for each device.


Why can't I set the wake-up-computer option to OFF for the Logitech Trackman and eHOME transceiver in the command prompt even with administrator's privilege?

Regards

Welcome
This tutorial from our Seven Forum is equally valid for Vista
http://www.vistax64.com/tutorials/63567-power-options-sleep-mode-problems.html

The suggested power plan setups are almost the same as what I have. I disabled the waking up from the Trackman and the eHOME transceiver, it seems to have worked, I have to see for the next few weeks whether the problem has indeed disappeared. If it is gone, that makes me wonder why these devices are walking up the computer since they are not touched / activated in anyway during sleep.