How to enable hibernation on Windows Server 2012 with Hyper-V role? [duplicate]

I have Windows Server 2012 installed on a laptop. I need a server because I develop software that I need to test specifically on a server edition. Documentation for Windows Server 2012 says

Sleep and hibernate are no longer disabled when the Hyper-V role is installed.

What value does this change add?

Computers running Hyper-V can be put into sleep or hibernate mode. This is particularly useful to users who are running Hyper-V on laptops computers.

Question

How to enable hibernation on Windows Server 2012 with Hyper-V role?

Things I tried

• Modify registry for hvboot. I did not have hvboot folder in the registry, so I added it manually, rebooted

  [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hvboot]
  "Start"=dword:00000003
  

  No effect.

• Pressed Alt+F4 on desktop, no Sleep or Hibernate available

• Stop Hyper-V Virtual Machine Management service in service.msc (which points to C:\Windows\system32\vmms.exe), all other Hyper-V services were stopped by default.

• Executed as Administrator

  powercfg.exe /hibernate on
  

  This is the output

  Microsoft Windows [Version 6.2.9200]
  (c) 2012 Microsoft Corporation. All rights reserved.
  
  C:\Windows\system32>powercfg.exe /hibernate on
  Hibernation failed with the following error: The request is not supported.
  
  The following items are preventing hibernation on this system.
          An internal system component has disabled hibernation.
                  Hypervisor
  
  C:\Windows\system32>powercfg.exe /a
  The following sleep states are not available on this system:
      Standby (S1)
          The system firmware does not support this standby state.
          An internal system component has disabled this standby state.
                  Hypervisor
  
      Standby (S2)
          The system firmware does not support this standby state.
          An internal system component has disabled this standby state.
                  Hypervisor
  
      Standby (S3)
          An internal system component has disabled this standby state.
                  Hypervisor
  
      Hibernate
          An internal system component has disabled hibernation.
                  Hypervisor
  
      Standby (Connected)
          The hypervisor does not support this standby state.
          The system firmware does not support this standby state.
  
      Hybrid Sleep
          Standby (S3) is not available.
          Hibernation is not available.
          The hypervisor does not support this standby state.
  
      Fast Startup
          Hibernation is not available.
  
  
  C:\Windows\system32>
  

Solution 1:

The article you linked to is in error. This is a feature expected to be a part of 2012R2. That section of the article should be labeled as requiring R2.