First case: When I installed a Catalina VM using VM Fusion 11.5.1, after I installed the Darwin.iso tools, I was able to get 1680x1050 (and a second choice, 840xsomething, but no other choices) on a new 16" MacBook Pro 2019 , and the VM machine was reasonably fast, although nowhere near as fast as a Parallels VM. (yeah, I made the memory and processor tweaks, I'm an experienced VM user).
Second Case: When I imported a Catalina HDD from Parallels, even after installing the tools, I only got 1024x768. Also, the imported VM was INCREDIBLY slow running on Fusion. And frankly, the screen looked like s***. VM Fusion did a terrible job importing this VM.
Why am I bothering? Because Parallels has a hard time running Electron based apps and I'm a heavy Visual Studio Code user. VM Fusion runs Electron apps reasonable well. On Parallels, you get fireworks and flashing lights. On VM Fusion, although it's pokey, it at least shows a coherent UI.
Unless someone has a fix for imported HDDs, I'm going to say to hell with it and start from a VM Fusion fresh VM. Shame, I spent a week getting this Parallels VM just right, all loaded with developer tools.
Looking forward to some recommendations :-)
Did you uninstall Parallels Tools from the imported VM?
Wil| Author of Vimalin. The virtual machine Backup app for VMware Desktop Products
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I'm also having a problem after having updated to 11.5.1. I had previously updated my machine to Catalina but i hadn't used the vm until now. Thus, I can't say that my Windows 10 VM was having the problem before the 11.5.1 update (this is possibly caused by the update to Catalina). Anyway the problem seems to be that my VMWare display drivers are kaput and I am limited to 23 pretty low res 'square-screen' driver that I think are the basic Microsoft display settings (i.e. 1024x768, 1152x852 etc...) . FWIW, I have re-installed VMWare tools through the VMWare interface and running the installation in the Windows VM. That did not help. I'm hoping others have discovered a way to resolve this?
Might be worth starting a new thread - this one is about OSX guests.
That said, make sure you also upgrade the virtual hardware.
Thanks for sharing this, I was about to downgrade back to Fusion 11.1. I found the Darwin.iso for 11.1, uninstalled the tools for 11.5.1 and installed the tools from the 11.1 Darwin.iso in my Mac OS X 10.12 VM. Problem solved.
There's absolutely an issue with the tools included in 11.5.1 as I never had any resolution issues prior to this update. As a side note, haven't noticed any resolution issues with my Win 10 VM using the 11.5.1 tools. Seems to be an issue with Mac guests.
As for your other problem, I haven't tried importing a VM. However, the other VM app I've tried is Virtual Box. Last I tried it (with a Win 10 VM) it was excruciatingly slow, but it's been at least 6 months if not longer. I know it's open source and updated rather frequently, so you might want to give it a try. I believe it can import Fusion and Parallel's virtual disks.