Since I upgraded my 2010 15" MacBook Pro from El Capitan to Sierra (at that time 10.12.1) putting it to sleep results in crashing (display remains black, restarts after approx. 5 minutes). I updated to 10.12.2 but same error. The temporary workaround is to disable sleep in energy prefs. I tried the following: Resetting PRAM & SMC, Starting in safe mode, reinstalled 10.12.2 (over the existing OS): no success.
Then I installed a fresh version on an external usb stick, no problem with sleep wake there anymore. I should mention that I'm using a DIY fusion drive (SAMSUNG SSD 830 & HGST HTS721010A9E630). I think there could be a Problem with DIY fusion drives and Sierra. Next step will be to format both drives, rebuild fusion drive and setting up a fresh sierra macOS without restoring any backups from time machine yet to see if the problem could be isolated to fusion drive.
Please let me know if you are having sleep wake issues, too and if you are using a (DIY) fusion drive. I'll also keep you updated! THX
UPDATE:
I created an external usb sierra installer and booted from there to use terminal and delete the DIY Fusion drive. Then I reinstalled sierra on the HDD to get a recovery partition, then i recreated a fresh FusionDrive with the SSD and the newly built Mac Partition on the HDD. Then I reinstalled Sierra on that Fusiondrive again and restored from timemachine Backup.
No more crashes on sleep so far!
So in conclusion, i guess reinstalling macOS is the solution, I don't think rebuilding the Fusion Drive is even neccessary, but i like the idea of a fresh drive to install on.
Most important thing: the issue does not get restored by timemachine!
Then I installed a fresh version on an external usb stick, no problem with sleep wake there anymore. I should mention that I'm using a DIY fusion drive (SAMSUNG SSD 830 & HGST HTS721010A9E630). I think there could be a Problem with DIY fusion drives and Sierra. Next step will be to format both drives, rebuild fusion drive and setting up a fresh sierra macOS without restoring any backups from time machine yet to see if the problem could be isolated to fusion drive.
Please let me know if you are having sleep wake issues, too and if you are using a (DIY) fusion drive. I'll also keep you updated! THX
UPDATE:
I created an external usb sierra installer and booted from there to use terminal and delete the DIY Fusion drive. Then I reinstalled sierra on the HDD to get a recovery partition, then i recreated a fresh FusionDrive with the SSD and the newly built Mac Partition on the HDD. Then I reinstalled Sierra on that Fusiondrive again and restored from timemachine Backup.
No more crashes on sleep so far!
So in conclusion, i guess reinstalling macOS is the solution, I don't think rebuilding the Fusion Drive is even neccessary, but i like the idea of a fresh drive to install on.
Most important thing: the issue does not get restored by timemachine!
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