Hot answers tagged intel
AMD were first to produce a commercial 64bit CPU architecture aimed at normal users rather than the server market. As a result, amd64 has come to be used to mean any 64bit architecture. There is no such thing as intel64, the possible names are x86-64,x86_64,x64, and AMD64x86_64 but they all refer to the same architecture. You can test this by running uname ...
I know it may sound stupid but I was having the same issue with Virtual Box. If you do not select the Ubuntu x64 for the operating system drop-down (ie you might have selected just Ubuntu, there should be two options for the Ubuntu distribution). The system auto boots to a virtual i686 instead of the required X86-64.
The following seems to fixed the issue for me: export hiz=false export INTEL_HIZ=0 export INTEL_SEPARATE_STENCIL=0 If it doesn't help try sudo intel_reg_write 0x2120 0x1206800 Source.
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