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Level 1

10 points

iMac 5K spontaneously restarts after sleep

My iMac 27" Retina 5K (late 2014) (OS 10.10.1) spontaneously restarts after sleep, and displays the error message, "A graphics problem has been detected. Click Report to submit to Apple."

An Apple senior advisor ran it through various tests including OS reinstall and decided to replace the computer. The problem did not occur with the replaced iMac for about 2 weeks, but now it's doing the same problematic behavior. BTW, I haven't downloaded any new software since receiving the replaced iMac.

I see from other threads that others are getting the same "graphics problem" error message, but I haven't seen anyone else mention the concomitant spontaneously restarts after sleep. Does this behavior sound familiar to anyone else?

iMac with Retina 5K display, OS X Yosemite (10.10.1), Time Capsule, iPad2

Posted on Dec 18, 2014 2:23 PM

109 replies

turbostar

Level 4

2,941 points

Feb 8, 2015 5:36 PM in response to Morry Sack

Apple is capturing data from my replacement machine that is also having the sleep wake failure as the original

I have the 295 GPU, which is where I think the problem lies

Due to the logs, Apple thought it was due to Google Chrome, so so I clean installed 10.10.2 without Chrome, and I'm still getting the sleep wake failure

I'll update as I get more information

Feb 9, 2015 1:08 AM in response to turbostar

In my case it seems to be the USB-hub in my wired keyboard that is causing the waking up.

My son has attached a USB-mouse and that isn't a problem at all.

dani861

Level 1

0 points

Feb 11, 2015 7:45 AM in response to turbostar

I have the 295 graphics card and I am on my 3rd ⚠ replacement iMac. Now the engineers are having a look at my machinedata which I sent today.

I have no USB hub connected. Only the wired apple keyboard and magic mouse with bluetooth.

Feb 11, 2015 12:38 PM in response to dani861

Please read back the thread carefully: Apple USB-keyboard IS a USB-hub

dani861

Level 1

0 points

Feb 11, 2015 12:41 PM in response to CellarDwellr

The iMac comes with this keyboard. Why should the mac crash because of this?

Feb 11, 2015 3:27 PM in response to Morry Sack

I've told a very smart tech engineer about this Yosemite-iMac issue and he said it is probably because it may be restarting because it is also monitoring any other nearby Mac via bluetooth or Handoff. Something totally unknown or unconnected may also be giving it a wake up signal. Not sure if this helps or not but that seems reasonable. Also, I've not had the uncalled for restart problem with my MacBook Pro since I've upgraded to 10.10.2. Just maybe, it's been fixed and Apple hasn't said anything about it.

dani861

Level 1

0 points

Feb 11, 2015 3:31 PM in response to venturexpo

I've installed 10.10.3 beta. Hasn't restarted/crashed yet after going to sleep

Craig ZB Author

Level 1

10 points

Feb 11, 2015 5:49 PM in response to venturexpo

Just had another data capture analysed and this time the Apple engineer said the spontaneous restart was caused by Google Chrome, my preferred browser. I'll uninstall Chrome and see if the problem continues. Just wondering if others having this problem are using Chrome or Safari.

Also, I have no other Mac nearby that might wake this iMac.

turbostar

Level 4

2,941 points

Feb 14, 2015 2:18 AM in response to Craig ZB

so it seems Apple is capturing info from 3 of us - dani861, Craig and myself

Craig, look back at my 2/8 post. ENG also told me Chrome, so I clean reinstalled 10.10.2 without Chrome, and I'm still getting sleep wake failures - Apple has the data from my no-Chrome crashes so at the very least, they are actively working on it

tbirdvet

Level 6

13,845 points

Feb 14, 2015 7:04 AM in response to turbostar

I would have been surprised if Chrome was causing the issue. I use with Yosemite and no issues.

Feb 14, 2015 7:35 AM in response to tbirdvet

tbirdvet wrote:

I would have been surprised if Chrome was causing the issue. I use with Yosemite and no issues.

On paper, Chrome (or any modern browser) can cause the issue. For example, if there are networking-related plugins - there are many bittorrent plugins - the Mac might wake for network access. The system logs should at least report the wake reason, if not the reason AND the application causing the wake.

tbirdvet

Level 6

13,845 points

Feb 14, 2015 8:03 AM in response to CellarDwellr

Even if the browser is closed out?

Craig ZB Author

Level 1

10 points

Feb 16, 2015 5:28 PM in response to Craig ZB

After many Data Captures sent to Apple's engineers to analyze – the last being to uninstall Google Chrome – now they say the problem is related to the power supply: either the power cable is bad or the power supply is faulty. In any case, a technician is going to come to my house and replace the power cable and power supply. What are the odds that my original iMac and the one it was replaced with both had faulty power supplies? This is getting ridiculous.

turbostar

Level 4

2,941 points

Feb 19, 2015 4:41 AM in response to Craig ZB

Craig, are you still able to opt for a replacement rather than replacing the power stuff? If you started talking to Apple while in your return window, I would push for a replacement since it wasn't your fault that you spent weeks (falling out of the return window) doing data captures on behalf of Apple.

Craig ZB Author

Level 1

10 points

Feb 19, 2015 9:13 AM in response to turbostar

Turbo, Apple replaced the iMac once, so I'm on my second computer, and soon-to-be third power supply. If replacing the power supply and cable doesn't fix the problem I'll request another iMac.

iMac 5K spontaneously restarts after sleep