Trouble booting on occasion (50/50)

About a week ago I built a Rockstor system, running 3.8-13, installed on an SSD. I only have 1 Rockon installed - Plex.

Sometimes when I boot the system, it will hang and not finish booting. If I look at the the boot process (I have a monitor connected to the system) It will stop with a message like:

[x.xxxxxx] kvm: disabled by bios

The x.xxxxxx are different numbers usually, and there can be anywhere from 1 to 4 of them. This morning they were:

[4.558374] kvm: disabled by bios
[4.592921] kvm: disabled by bios
[4.611248] kvm: disabled by bios
[4.635248] kvm: disabled by bios

When the system boots and doesn’t hang, I can see this message flash quickly during the boot process, then it finishes successfully with the login and ip address.

Anything I can do to get the system to boot reliably? I’m not concerned about losing my data, since it’s all cloned to another custom-built NAS I have that boots reliably with no issues.

The message is kind of strange: “KVM” keyboard, video, mouse? None of these are disabled in the BIOS.

@vlad1966 I think in this case the KVM stands for Kernel Virtual Machine it’s the build in virtualization system in the linux kernel. You could look in the BIOS for processor features that are disabled that may only occasionally be successfully re-enabled or recognized by the kernel. Worth a try.