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Insomnia: prevent computer sleep mode



16 Apr 2012 (Updated )

This small utility prevents, on Windows computers, the automatic sleep mode.

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This small utility prevents, on Windows computers, the automatic sleep mode often activated by "aggressive" power policies.

Preventing computer sleep mode (a.k.a "power save") is mostly useful while doing long computations in a MATLAB script.

This utility has been inspired by the original INSOMNIA Windows utility!
See http://blogs.msdn.com/b/delay/archive/2009/09/30/give-your-computer-insomnia-free-tool-and-source-code-to-temporarily-prevent-a-machine-from-going-to-sleep.aspx

Required Products MATLAB
MATLAB release MATLAB 7.11 (R2010b)
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Comments and Ratings (8)
27 Jul 2014 Francesco Montorsi

Hi Parth! unfortunately it is much harder to create an "insomnia" tool for Linux... the closest thing I could found is "Caffeine":
but it looks pretty hard to integrate in a MATLAB script...

16 Jul 2014 Parth

Extremely useful - thank you! Any idea if there's an equivalent solution within MATLAB or the file exchange for OSX or Unix platforms?

29 Dec 2013 Joao Henriques

Awesome work! I added this to my startup.m and finish.m files so that the computer doesn't sleep when I have MATLAB open (since I'm usually doing some heavy number-crunching).

21 Jul 2012 Jan Simon

Please consider this warning also: http://download.microsoft.com/download/9/c/5/9c5b2167-8017-4bae-9fde-d599bac8184a/AwayMode.doc

25 Apr 2012 Francesco Montorsi

I've updated the ZIP file with corrected files!

25 Apr 2012 Sam Roberts

The file insomnia_header.h appears to be missing from the submission.

18 Apr 2012 Francesco Montorsi

yes, you're right. I will replace global with persistent keyword asap :)

18 Apr 2012 Jan Simon

Perhaps you want to store insomnia_prevExecState as PERSISTENT instead of GLOBAL?

25 Apr 2012

- changed global to persistent insomnia_prevExecState
- uploaded insomnia_header.h

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