iMac sleeps too soon since Mountain Lion

S

Steppy

macrumors member
I have a mid 2011 iMac i5 27'' on which I have installed Mountain Lion.

Everything is working great, except for one thing.

I have my Energy Saver set to the default Sleep of 10 mins of non use. Whenever I was downloading anything under Lion it would always stay awake until the download had finished, even if that was 2 or 3 hours. Since changing to Mountain Lion my iMac sleeps exactly as per Energy Saver settings regardless of the fact that there is network/hard drive activity.

Is there a setting somewhere which needs tweaking? I have tried checking/unchecking "Wake for Network Access", but that doesn't make any difference.

Any ideas?
 
Steppy said:
I have a mid 2011 iMac i5 27'' on which I have installed Mountain Lion.

Everything is working great, except for one thing.

I have my Energy Saver set to the default Sleep of 10 mins of non use. Whenever I was downloading anything under Lion it would always stay awake until the download had finished, even if that was 2 or 3 hours. Since changing to Mountain Lion my iMac sleeps exactly as per Energy Saver settings regardless of the fact that there is network/hard drive activity.

Is there a setting somewhere which needs tweaking? I have tried checking/unchecking "Wake for Network Access", but that doesn't make any difference.

Any ideas?
Click to expand...
Just realised that I have this problem as well.
ML sleeps when I have downloading job.

This does not happen in Lion.
 
If it helps my week old MBA 11 goes to go into full sleep after 5 minutes (the setting for display sleep).

Wake for Wi-fi does not work as before (development webserver).
 
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