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teszeract · May 30, 2005, 03:20 PM

I've got a brand spanking new iMac 20" for home & a new dual 2.0 Tower for production with Tiger preinstalled. The OS is great, but my big issue is with the deep sleep.

Tiger is not waking from sleep for Retrospect backup, iCal-scheduled tasks, timed mail actions etc. It worries me also, that the macs may not be waking for early morning cron jobs. I have the "Put HD to Sleep", "Wake for Network Activity" options on. What's going on. I'm sure that this wasn't the case under Panther - my backups did happen. Unfortunately I can't set more than one wake-up schedule with energy saver or that would be a workaround. This is not good.

barney ntd · May 30, 2005, 03:29 PM

No version of Mac OS X has ever woken up for cron jobs, iCal tasks or Retrospect backups from deep sleep. You have to schedule wake from sleep in the Energy Saver pref. panel. Maybe you were using shallow sleep before?

jman · May 31, 2005, 01:03 PM

There is only one kind of sleep. SLEEP

having the monitor turn off is not sleep, so what do you mean when you say Deep Sleep

belafonte · May 31, 2005, 02:35 PM

i think he is trying to be dramatic

SpaceMonkey · May 31, 2005, 02:52 PM

Also, I thought I read somewhere that Apple rescheduled the cron jobs in Tiger for sometime during the middle of the day?

Detrius · May 31, 2005, 03:06 PM

Originally Posted by jman

There is only one kind of sleep. SLEEP

having the monitor turn off is not sleep, so what do you mean when you say Deep Sleep

I think deep sleep is when all of the fans turn off too... since all of the peripherals (PCI, AGP, USB, etc...) got turned off when the machine went to sleep.

teszeract · May 31, 2005, 03:28 PM

you can tell the computer to sleep, but you can also set the computer to put the hd's to sleep. That clears that up. Anyway, I've been trying a few "wakers" viz powercontroller - not working yet though.

barney ntd · May 31, 2005, 04:08 PM

Originally Posted by jman

There is only one kind of sleep. SLEEP

having the monitor turn off is not sleep, so what do you mean when you say Deep Sleep

Wrong. Deep sleep was introduced about the same time as the G4 processor, and involves switching off everything in the computer except the memory, and putting the processor into a special "suspend mode" (I think that's what it's called) where it uses almost no power and generates almost no heat. Before this, sleep involved switching off various parts of the machine, but enough things had to be left on that the fans could not be stopped.

The G4 powermacs (including the one I am using now) can do either deep or shallow sleep, depending on what cards are installed in the PCI slots. If you install a card which doesn't support sleep, the machine puts other bits to sleep, but leaves enough switched on to keep the card alive, including the fans.

Barney.