I get this message during booting of my laptop:

[14.255596] kvm disabled by bios

Can someone explain this?

3 Answers 3


Well, is more or less what the error says. KVM is a Kernel-based Virtual Machine and some BIOS block the instructions that KVM uses. You can try some fixes in case that your BIOS is blocking it and the BIOS has KVM enabled:

  • On some hardware (e-g HP nx6320), you need to power-off/power-on the machine after enabling virtualization in the BIOS.
  • Enabling some BIOS features may break VT support on some hardware (e-g Enabling Intel AMT on a Thinkpad T500 will prevent kvm-intel
    from loading with "disabled by bios")
  • On some Dell hardware, you also need to disable "Trusted Execution", otherwise VT will not be enabled.



In my case, an IBM T60, it was a bios-setting about the CPU, that had to be enabled. "When enabled, a WMM can utilize the additional hardware capabilities provided by Intel (R) Virtualization Technology."


To enable KVM capability for a Toshiba Portege R705-P35, go to the BIOS's Advanced page, then, for the "Virtualization Technology" setting, select "VT-⁠x Only".


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