Dual Quad-core Mac Pro reboots from sleep

My brand-new Mac Pro nearly always restarts rather than waking up from sleep. Just now I left it to go to sleep by itself and came back two or three hours later. When I touched the space bar, it restarted.

I have an IOGear firewire hub plugged in with nothing attached to it and lots of USB devices plugged in.

Dual 2.8 GHz Quad-core, Mac OS X (10.5.1)

Posted on Jan 20, 2008 7:09 PM

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656 replies

Feb 13, 2008 6:11 AM in response to The hatter

Hatter, we'd be interested in that reference 'cause I don't think it was here. As of last Thurs Apple tried to have me drive 80 miles one way to have a genius look at it, but since the unit fell within the 14 day return period I insisted on a RMA instead. I've got 14 days from when I print the FedEx labels and soon as it happens again it's going back. But, the problem I'm having now is that the 5.2 update is not letting it sleep! Clever way to solve the problem, I thought.

Feb 13, 2008 9:28 AM in response to The hatter

Config: Early 2008 2x2.8G (8 core), 320G ST (original); 2x500G WD, 1x750G WD; 2x1G Ram (Original); 2x2G Ram (OWC), HD 2600, APC RS1500LCD

No video issues. Reboot after sleep of any duration, fixed by SMC and PRAM reset. Recurred after 10.5.2 update. Again fixed by SMC and PRAM reset.

- Caveat: Not extensive testing since I don't routinely sleep the machine.
- However, I believe this points to software or firmware issue...how could hardware problem be repaired by firmware resets?
- Side question...does anyone know what sort of thing could cause SMC and PRAM to require a reset (ie, cause of problems)?

Feb 13, 2008 11:08 AM in response to transplant6

Count me in too - though I found some interesting things trying;
Just got a brand-new 3.2 with 16GB RAM and the 8800GT Card.
Out of the box, installed 10.5.2 (before reading about the reboot on out-of-sleep issues).

Sure enough, it reboots when it comes out of sleep. NOTHING in the console / logs.

I have 3 1TB Seagate 7200.11 drives in there, and 16GB RAM (OWC). All 'test out' fine...

So I did a few tests - not sure this is representative yet as I have NOT had time to leave it sleeping overnight yet - but I have the Apple wireless keyboard and Mighty Mouse (both BT / Bluetooth). When awaking with keyboard it does not reboot. When waking by Mouse button it does reboot, consistently!

So, I turned off Mighty Mouse and hooked up a Logitech (RF via USB) - and NO reboots.
Now, I haven't been able to test this for long periods of time - and it could still be coincidence; but I slept and woke it 3 times with Mighty mouse; reboot every time.
I then slept and woke with Logitech mouse or keyboard about 15 times - no reboots.....

Let it sleep only 1-2 minutes every time testing (as I had a flight to catch and won't be able to test more till weekend).

Anyone else seeing this pattern at all? I have not yet tried reset the pram/smc either.....

Thx,
Dan

Feb 13, 2008 12:53 PM in response to BillC37

Darn...
it was worth a try 😉
Yeah, so this seems COMPLETELY random then, and unrelated to ones Hard drives, brand, memory, Graphics Card, periphs from what I can read off all the posts 😟
Also not a matter of 'first batch' (mine just arrive 2 days ago)...

For what it's worth, just woke it up from sleep (still with BT Mighty Mouse not attached) and woke up fine again. So, assuming it does reboot again at SOME point, no pattern at all ... ?!

dan

Feb 14, 2008 6:25 AM in response to transplant6

Add another confused voice to the fray...
I have a 2.8Ghz Octo that I bought about 3 weeks ago. It seemed to wake from sleep just fine until several days ago. Unfortunately I haven't kept a log of system changes like I should... But it may have been around the time of the 10.5.2 update. Yesterday it rebooted from waking and I quickly found this thread. I did two things, as I recall; I turned off Bluetooth, and I reset the SMC and zapped the PRAM several times. Upon waking the machine this morning, all is nominal. My impression is that it was the SMC/PRAM bit that fixed the problem, but reading others' reports here I am not 100% sure. I really hope Apple acknowledges this and issues a fix...

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Dual Quad-core Mac Pro reboots from sleep

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