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I know I can check is VT-X is supported by a processor by egrep '(vmx|svm)' /proc/cpuinfo. But even if it's supported, it can be turned off in the BIOS. How can I detect if it's turned on or off?

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up vote 3 down vote accepted

I found answers to your questions here and here. Whether they are applicable or not depends on your linux installation.

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A very unenviable way to check (without going into the BIOS) would be to install/open Virtualbox hypervisor, and try installing a 64-bit Linux VM and see if the settings allow you to enable VT-X. Installation of VM in virtualbox is the only context where I've encountered the need to enable VT-X/AMD-V.

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