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vlalov
Paper Tape
Posts: 4
Registered: ‎08-02-2015
Location: London, UK
Views: 593
Message 1 of 6

AES-NI disabled on Yoga 15 with an i7 5500U

It seems the device does not support the AES-NI instructions, even though Intel states the CPU should - http://ark.intel.com/products/85214/Intel-Core-i7-5500U-Processor-4M-Cache-up-to-3_00-GHz?q=Intel%20...

 

I've used HWiNFO to confirm AES-NI is indeed disabled. I am using BIOS 1.16, which is the latest.

Would we get an update that enables AES-NI? It is extremely useful if you do full disk encryption!

Machine model is 20DQ.

vlalov
Paper Tape
Posts: 4
Registered: ‎08-02-2015
Location: London, UK
Views: 536
Message 2 of 6

Re: AES-NI disabled on Yoga 15 with an i7 5500U

Anyone from Lenovo to say anything? According to some articles this is done intentionally. At least write why you've hindered a CPU that costs a huge amount of money.
efrog
Paper Tape
Posts: 1
Registered: ‎09-07-2015
Location: Germany
Views: 474
Message 3 of 6

Re: AES-NI disabled on Yoga 15 with an i7 5500U

@vlalov Do you have a solution for that problem?

vlalov
Paper Tape
Posts: 4
Registered: ‎08-02-2015
Location: London, UK
Views: 467
Message 4 of 6

Re: AES-NI disabled on Yoga 15 with an i7 5500U

Nope. As far as i can tell this is intentional - probably another form of control ;-)

It won't happen. There are some custom BIOSes made by russian geeks that enable AES-NI back again for older Lenovo laptops.

ruanhatting
What's DOS?
Posts: 1
Registered: ‎08-30-2015
Location: South Africa
Views: 464
Message 5 of 6

AES-NI Instruction Set - Yoga 15 - i7 5500U

How to I enable the AES-NI instruction set for my Yoga 15?

 

I have the i7 model and Intel Ark indicates that the CPU does have that instrucion set. http://ark.intel.com/products/85214/Intel-Core-i7-5500U-Processor-4M-Cache-up-to-3_00-GHz

 

They also say that some manufacturers need to update the BIOS to enable it. See above link.

 

Please Help.

 

 

vlalov
Paper Tape
Posts: 4
Registered: ‎08-02-2015
Location: London, UK
Views: 421
Message 6 of 6

Re: AES-NI Instruction Set - Yoga 15 - i7 5500U

Only one option - we pester Lenovo to do their work and release a BIOS with AES-NI enabled.

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