disabling usb devices in a laptop

Matthew Walker mwalker at kydance.net
Thu Dec 11 16:18:09 MST 2008


On Thu, December 11, 2008 4:08 pm, Brandon Stout wrote:
>> I recently ran powertop on a laptop and noticed that the webcam and
>> bluetooth devices (both of which are connected via an internal USB hub),
>> are always on.  They are both sucking power, and the webcam is also
>> hitting the CPU with a constant stream of interrupts.  Since I'm not
>> using them, I would love to disable these devices.
>>
>> So far I have tried unloading the kernel modules, which didn't work, and
>> blacklisting them so they can't load in the first place, which also
>> didn't work.  Unfortunately, the BIOS is limited and doesn't give any
>> options for disabling specific devices.
>>
>> Has anyone run into this problem before?  How do you turn off a USB
>> device without snipping the wires?
>
> Why not just unplug the devices since you're not using them anyway?

Because they're internal.

-- 
Matthew Walker
Kydance Hosting & Consulting, Inc. - http://www.kydance.net/
PHP, Perl, and Web Development - Linux Server Administration



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