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#1 2010-10-31 01:03:53
- RedScare
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- Registered: 2009-03-28
- Posts: 91
Turning off hardware
I have read in several places that unloading the module that controls a peice of hardware can save battery life (in this case, "turning off" the webcam on a laptop). Is there any particular way to do this if the module in question is compiled into the kernel, or is the webcam always "on" and sucking battery no matter what I do?
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#2 2010-10-31 03:53:51
- hut
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- From: Hanover, Germany
- Registered: 2010-03-12
- Posts: 569
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Re: Turning off hardware
If the webcam is internally connected via USB (lsusb), try activating usb autosuspend. Or if possible, deactivate it in the BIOS or with some button.
"hut_" or "h00th00t" in irc.freenode.net #archlinux
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#3 2010-10-31 04:19:44
- RedScare
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- Registered: 2009-03-28
- Posts: 91
Re: Turning off hardware
How would I go about the usb autosuspend? And can I do that after the kernel is already running?
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#4 2010-10-31 08:32:41
- Army
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- Registered: 2007-12-07
- Posts: 1,784
Re: Turning off hardware
Powertop has the ability to turn on autosuspend, so do the laptop-mode-tools. Just do a little searching and you'll find out how this works.
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