iMac not waking up from sleep mode (10.5.6?)
My iMac 24" 2.4Ghz is about 6 months old. Ever since I've installed 10.5.6 (although I'm not sure that's got anything to do with this) I've been having various issues (other posts).
This one is about my iMac not wanting to wake from sleep.
a) until installing 10.5.6 I never had any issues with waking the iMac from sleep (ever!)
b) This only happens if the iMac has been in sleep mode for quite a while (i.e. 6+ hours or so)
c) It does not always happen.
Basically what happens is I ty to start the iMac either by pressing a key on keyboard/mouse or/and by pressing on the power button (short press). Nothing happens at all even after repeated trials.
I need to press the power button 6 seconds and then press it again to start the iMac. It then performas a full cold reset.
Any ideas to what this might be? I've reset PRAM and SMC-thingy. Still happens.
Cheers Oliver
iMac 24" 2.4Ghz, Mac OS X (10.5.6)