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grant123 Veteran
Joined: 23 Mar 2005 Posts: 1080
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Posted: Thu Dec 04, 2014 8:36 pm Post subject: Power save tips? |
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I'm trying to run a Gigabyte Brix 2807 from a battery for as long as possible. I think I've optimized the Power Management section of the kernel config and I've disabled SMP. Any other ideas?
http://www.newegg.com/Product/Product.aspx?Item=N82E16856164017 |
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blu3bird Retired Dev
Joined: 04 Oct 2003 Posts: 614 Location: Munich, Germany
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Posted: Thu Dec 04, 2014 10:18 pm Post subject: |
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Use sys-power/powertop to monitor your power usage. It will also give you some configuration advices.
Best advice is probably: Turn off stuff you don't need. Spin down the hard drive and vga, suspend usb devices and audio..
If you have long "idle periods", you could try to suspend the whole system to ram, sleep for a few minutes and unsuspend it using wake on lan or something like that. _________________ Black Holes are created when God divides by zero! |
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grant123 Veteran
Joined: 23 Mar 2005 Posts: 1080
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Posted: Fri Dec 05, 2014 12:50 am Post subject: |
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I will definitely check out powertop. Wake on LAN could be really handy too. How do I go about automatically suspending devices I'm not using? |
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Ant P. Watchman
Joined: 18 Apr 2009 Posts: 6920
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Posted: Fri Dec 05, 2014 4:01 am Post subject: |
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There's USB autosuspend, but it's off by default afaik. This may be useful there. It works on lots of things, even input devices - I have it on a drawing tablet that otherwise has an annoying "standby" LED flashing at me all day.
Not sure how useful PCI autosuspend is. I've tried mass-enabling it through powertop myself and didn't see much difference (and it caused some very annoying network reliability issues). |
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grant123 Veteran
Joined: 23 Mar 2005 Posts: 1080
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Posted: Fri Dec 05, 2014 1:15 pm Post subject: |
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Nice, USB autosuspend could be just what I need. It seems to work fine on my USB keyboard/trackpad but the LED on my USB sound card doesn't go out so I don't think it's working there. If I do a full system suspend then the LED does go out. Should the behavior be the same?
EDIT: Actually it does work as long as I close my mpd client (cantata). Killer stuff, thanks! |
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