All VM's into Guru Meditation State

[fefo1993]

Hi, i have Ubuntu 20.04.1 LTS as Host, and Virtualbox 6.16 with some VMs configurated on it.
With no sense, all my vm's goes into "Guru" state...here the log when i try lo run one of my vm (windows 10)
what is the problem???
big thanks

[scottgus1]

You're running the Ubuntu fork, which we technically don't support, since they may have changed things:

00:00:01.362490 VirtualBox VM 6.1.10_Ubuntu r138449 linux.amd64 (Jun 6 2020 11:31:37) release log

The VM meditated before the VM's OS was touched:

00:00:02.357960 VMMDev: Guest Log: CPUID EDX: 0x178bfbff
00:00:02.360531 Changing the VM state from 'RUNNING' to 'GURU_MEDITATION'

I don't know if the CPUID line is normal, but it was the last thing logged before the guru went south.

Try updating Virtualbox to the official version from https://www.virtualbox.org/wiki/Linux_Downloads.

When you get the upgrade done, set this VM's CPU count to 2. Your host PC has 4 available, and Windows 10 adores two processors.