Running Windows 7 and a Ubuntu 14.04 VMs on a MacBook Pro (Retina, 15-inch, Mid 2014).
The problem has been observed whether running one or both if the VMs, though it has been observed more when running the Ubuntu VM.
The problem occurs when switching desktops from a macOS desktop to the VM desktop (macOS Spaces). The problem usually manifests itself as a frozen screen with the VMs screen partially visible. After a delay the mac will start responding again and switching to the VM displays a crash message.
Recovery requires the VM to be restarted, no previous state is maintained, i.e., work in the VM is lost.
Tried to attach crash report from a recent occurrence but apparently it is too large.
Problem was not previously observed under multiple macOS and Fusion 8.x versions over a 5 year period, last stable configuration was macOS Mojave (10.14) and Fusion 8.5.10.
System details:
Model Name: MacBook Pro
Model Identifier: MacBookPro11,3
Processor Name: Quad-Core Intel Core i7
Processor Speed: 2.8 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Hyper-Threading Technology: Enabled
Memory: 16 GB
Boot ROM Version: 158.0.0.0.0
SMC Version (system): 2.19f12
Intel Iris Pro:
Chipset Model: Intel Iris Pro
Type: GPU
Bus: Built-In
VRAM (Dynamic, Max): 1536 MB
Vendor: Intel
Device ID: 0x0d26
Revision ID: 0x0008
Automatic Graphics Switching: Supported
gMux Version: 4.0.8 [3.2.8]
Metal: Supported, feature set macOS GPUFamily1 v4
Displays:
Color LCD:
Display Type: Built-In Retina LCD
Resolution: 2880 x 1800 Retina
Framebuffer Depth: 24-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Automatically Adjust Brightness: No
Connection Type: Internal
NVIDIA GeForce GT 750M:
Chipset Model: NVIDIA GeForce GT 750M
Type: GPU
Bus: PCIe
PCIe Lane Width: x8
VRAM (Total): 2 GB
Vendor: NVIDIA (0x10de)
Device ID: 0x0fe9
Revision ID: 0x00a2
ROM Revision: 3776
Automatic Graphics Switching: Supported
gMux Version: 4.0.8 [3.2.8]
Metal: Supported, feature set macOS GPUFamily1 v4
