Hibernate - Ubuntu?

gam3r · 15 May 2011 at 10:41

I have a server with Ubuntu installed, it's a headless machine which I can access though SSH or RDP. For power saving purposes, is there a way I can make it hibernate after ~30 minutes if there is no activity, and then wake if a computer/device on the network attempts to access a SMB share?

Thanks

phill1978 · 15 May 2011 at 10:58

thats kind of what i want to do aswell.

although perhaps to do it on a system that doesnt require imediate access as coming from hibernate and re establishing any network would take a few seconds longer than i could be bothered to wait.

another idea i had was to set wake times, so that when im home (usually about 6pm) i can have the system booted and ready, it can shut down again after 1hr of inactivity but still have WOL enabled

gam3r · 17 May 2011 at 21:56

Any ideas?

PermaBanned · 17 May 2011 at 21:59

Well it may be possible to set it to hibernate after a certain amount of time, and with some clever bash code you might be able to tie that in with some sort of network variable... but i doubt it would work for waking up, because hibernating is either suspending to RAM or HDD, where your current session is saved as it is so it can be started again in a few seconds - as far as i'm aware no processes are actually running.

gothi · 17 May 2011 at 22:20

Installing laptop-mode-tools and/or pm-utils might get you closer to what you want to achieve: https://wiki.ubuntu.com/PowerManagement

kae2 · 19 May 2011 at 23:49

I believe the BIOS's wake function doesn't work properly.

PermaBanned · 23 May 2011 at 19:43

Just found this:

http://www.omgubuntu.co.uk/2011/05/easyshutdown-and-complexshutdown-two-small-apps-for-one-job/

Which allows you to hibernate after being idle for a certain amount of time, it seems. Not sure if it counts network traffic as being active though. Also you'd have to start it up again manually.