VMware Fusion on Mac OS X - Sleep, no wake-ee

I'm using VMware Fusion 7.1.2 and OS X 10.10.5.

Typically the symptom is that the Mac fails to give me a login prompt, and I have to hit the power button. Once it's booted up, and I log in, I find that all my running apps have stopped, and try to automatically restart.

This means that any open documents go into recovery mode, and the VMware VMs themselves are shut down.

The Mac itself reports a "Sleep/Wake Failure" which I duly send off to Apple each time.

I did have this problem last year: -

but didn't find a specific resolution.

This time around, I did find this useful thread on the VMware forum: -

Again, it goes on for a loooooong while, but does have a few useful nuggets, including: -

- Changing the power management settings pertaining to suspend/hibernate, via the pmset command

- Switching from Integrated to Discrete graphics ( forcing VMware to use the Integrated card )

- Checking "Pass power status to VM" within the VMs themselves

- Using a 3rd party application called Sleepwatcher to suspend and resume the VMs themselves BEFORE OS X suspends / resumes

This far, I've not come to a specific conclusion, apart from that pmset changes have, quelle surprise, a horrifying impact upon battery life :-(

I will try the other three and report back .....