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macrumors 6502
Original poster
Dec 24, 2011
259
18
The energy settings are set to default on the iMac which is basically to turn the display off after set a number of minutes. The sleep function is unchecked which means it will automatically sleep according to its system integration with App nap. The wake for network access is checked.

When I receive a FaceTime call, the iMac doesn't turn on. When I resume it manually, it simply shows the missed FaceTime call notification. FaceTime also doesn't have app nap disable settings. This can't be normal behaviour ?
 
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