Q: Time Machine not waking Macbook to perform backups
I am backing up a Macbook Pro to a Mac Mini with OS X Server installed. Previously I backed it up to a locally-attached USB hard drive. It's about 1 year old and with Yosemite, it performed hourly backups while sleeping as expected.
In both cases, Time Machine works fine, aside from one thing... The hourly backups do not happen, when the computer is asleep. In other words, the Mac does not wake itself to perform the backup as expected (Power Nap is enabled.)
I have seen other questions similar to this, involving a USB-connected UPS, but I do not have one.
What I've tried:
1. I have done a clean install (with format) of El Capitan from the recovery partition, and did not restore from Time Machine (just dragged my music, photos, documents back to their respective homes manually).
2. I have also reset the SMC and PRAM, with no effect on this issue.
3. I have updated to 10.11.2 and still experience the problem.
4. Switched from locally-attached (USB) target to a network target (on OS X Server) with no change
Starting a backup manually works perfectly, and automatic backups occur as expected while I am using the computer (i.e. as long as it does not go to sleep).
Energy Saver preferences are using defaults, Power Nap is enabled.
So my question is simply... Before I contact support, does anyone know if there is an open bug report for this? I *have* read the other threads and they are very specifically talking about a connected UPS issue and that a fix was imminent in 10.11.2. Any other Macbook owners having this issue?
MacBook Pro (Retina, 15-inch, Mid 2014), OS X El Capitan (10.11.2)
Posted on Dec 22, 2015 4:39 AM