Chosen Solution

I have spent months trying to figure out why my MacBook Pro Retina (2012) keeps rebooting when asleep (lid closed or open) on a near-daily basis. The problem started right after I replaced the original battery with the iFixit Kit. The mac restarts itself at random times, but only when asleep (it usually reboots twice). It doesn’t happen every day, but nearly every day. The resulting crash report is blank. Sometimes doing things like resetting the SMC , PRAM, or booting into safe mode seems to fix the problem for a bit, but eventually it starts up again. I upgraded to High Sierra around the same time, and spent months thinking the rebooting issue was software related, but since nothing I have tried has seemed to solve the problem, I’m now convinced it has to do with the battery itself. The reboots occur no matter how charged the battery, and no matter whether the MacBook is plugged in or not, lid open or closed. The only consistent state is that it is asleep and usually for awhile. I’ve seen that “Power Nap” can be a problem for some machines, but I have toggled that off and on, with no resolution. The battery itself seems to be functioning as it should, here’s the info from the system report on its health. Model Information:Serial Number: D8622873BQZDNMGAXManufacturer: SMPDevice Name: bq20z451Pack Lot Code: 0PCB Lot Code: 0Firmware Version: 511Hardware Revision: 3Cell Revision: 1150Charge Information:Charge Remaining (mAh): 5767Fully Charged: NoCharging: NoFull Charge Capacity (mAh): 7944Health Information:Cycle Count: 118Condition: NormalBattery Installed: YesAmperage (mA): -2389Voltage (mV): 11540 Does anyone have any experience or thoughts about this issue?

(Copied and pasted from IFIXIT- the link didn’t show the ‘solution’ which I thought might be confusing, so I opened it and just pasted that) Posted: 12/02/2009 I found a very simple fix to the “restart after sleep” problem on the Apple user forum.

  1. In System Preferences, open Network preferences.


  2. Highlight “Ethernet” or “Built in Ethernet”.


  3. Click the Minus sign ( - ) (at the bottom of the window just above the unlocked lock icon) to delete the Ethernet configuration. 

4. Click the Plus sign ( + ) (at the bottom of the window just above the lock icon) then select “Ethernet” from the menu that appears. Then click “CREATE”. (a new Ethernet configuration is created in the left section of the window). Then click “APPLY” on the lower right side of the window.

I would review this Apple T/N to make sure the MagSafe adapter and its cord is in good shape: Apple Portables: Troubleshooting MagSafe adapters. Using a cotton swab (Q-Tip) slightly damp with 85% isopropyl alcohol wipe down the contacts if needed.