no VT-x with Core 2 Duo (VERR_VMX_NO_VMX) [SOLVED]

e.male · Post by **e.male** » 30. Jun 2009, 21:06

Hi forum,

Just installed 3.0.0 on Ubuntu Jaunty from the repos. When I try to create a new machine with 2 CPUs, I get

VT-x is not available. (VERR_VMX_NO_VMX).
Unknown error creating VM (VERR_VMX_NO_VMX).

CPU is a Core 2 Duo P8400, VT-x is enabled in the bios, vboxdrv kernel drivers are loaded, ...
the CPUID dump portion of the log has this to say

VME - Virtual 8086 Mode Enhancements = 1 (1)
VMX - Virtual Machine Technology = 0 (1)

What am I missing?
Is there a way to test if VT-x is working at all?

e.male · Post by **e.male** » 1. Jul 2009, 01:05

ha! enabling VT-x in the bios and restarting is not enough. changes will only become active after powering the machine off. DOH!

someone should have asked me: 'did you turn your computer off and on again? that usually fixes it'

well, at least it's working now. SMP will save me lots and lots of time, yay!

Post by **vbox4me2** » 1. Jul 2009, 10:46

Its always good to re-read the FAQ as it gets updated frequently, I added that cold boot stuff last week

virtualbox.org