Can cron cause computer to wake up from hibernate?

Danilo Turina
Tue Oct 2 07:46:00 GMT 2007

Some time ago, it happened to me that my PC came out of hibernate 
without no apparent reason.

Initially I though that someone, accidentally, hit the keyboard causing 
the resume of the PC, but after disabling keyboard switch on, the 
problem persisted.

I then discovered that my network card was configured to wake up the PC 
when receiving certain kind of packets. Disabling that feature did the job.


Saurabh Tendulkar wrote:
> Hi,
> I'm trying to troubleshoot why my pc comes out of hibernate. It seems 
> like some of the times this happens correspond to cron jobs. Is it 
> possible that cron could be (one of) the culprit(s) here? If so, is 
> there a way to prevent cron from waking up the computer? Thank you.
> saurabh
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