VMWare ESXI - running Linux VMs crash and then won't power on

[Jeffix]

So I have assembled a machine that I am using as a VMWare ESXI (v 6.7) host. I have successfully installed a Windows 10 VM on said host and it powers on and runs as one would expect. I then attempted a Ubuntu VM (18.04) and it successfully installs but after about a minute of uptime after the initial installation, the VM suddenly powers off and any attempts to power it on again result in this error: "The operation is not allowed in the current state". The current state is Powered Off. My Windows 10 VM still works just fine. I've tried Ubuntu 18.04 as well as CentOS 7.5 and get the same result after creating VMs using both. Any ideas here?

[RuZoG]

When creating the Linux VM which kernel are you telling ESXi to emulate? Have you tried others ie 'Linux 64Bit Other'? If the host is struggling emulating the OS reliably something like this could be a problem. 

[Jeffix]

I have not tried "Linux 64bit other" I used Ubuntu 64 bit for the Ubuntu VM and CentOS 75 x64 for CentOS. I will try using the other option.

[Jarsky]

What's the hardware? If it's pre Skylake then you should consider running ESXi 6.5

[Jeffix]

I ran the Ubuntu 18.04 VM with 6.5 compatibility instead of 6.7 and it is behaving normally.