Sleep and hibernation is working on Server 2012 with started hypervisor! I do not know why...

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hi,
enabled hyper-v role in microsoft windows server 2012 on testing computer (pc i7 cpu , 16gb ram). found strange behavior. sleep mode enabled , after command “powercfg /hibernation on” hibernation working.

i tested sleep (s3) , hibernation started hypervisor , running virtual machine. tested sleep , hibernation triggered power button , time-out set in power options (i set sleep after 1 minute , later hibernate after 1 minute , wait).

sleep , hibernation working! not understand why. sleep , hibernation should functional on client hyper-v on windows 8 , not on server 2012.

some examples:
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testing workstation (i7, 16gb ram) server 2012 , started hypervisor:
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c:\users\administrator>powercfg /a
the following sleep states available on system:
    standby (s3)
    hibernate
    fast startup

the following sleep states not available on system:
    standby (s1)
        system firmware not support standby state.

    standby (s2)
        system firmware not support standby state.

    standby (connected)
        hypervisor not support standby state.
        system firmware not support standby state.

    hybrid sleep
        hypervisor not support standby state.

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my laptop (i5, 8gb ram) server 2012 , started hypervisor:
--------------------------------
>powercfg /a
the following sleep states not available on system:
    standby (s1)
        system firmware not support standby state.
        internal system component has disabled standby state.
                hypervisor

    standby (s2)
        system firmware not support standby state.
        internal system component has disabled standby state.
                hypervisor

    standby (s3)
        internal system component has disabled standby state.
                hypervisor

    hibernate
        internal system component has disabled hibernation.
                hypervisor

    standby (connected)
        hypervisor not support standby state.
        system firmware not support standby state.

    hybrid sleep
        standby (s3) not available.
        hibernation not available.
        hypervisor not support standby state.

    fast startup
        hibernation not available.
--------------------------------

r. revil

relef revil


hyper-v in windows server 2012 support sleep - windows server 2012 not enable sleep. happens because windows server uses basic video driver, not support sleep.

most have installed third party video driver on system, removed block , allowed enable both sleep , hibernation.

cheers,
benjamin armstrong
============================
windows virtualization
senior lead program manager

posting provided no warranties, , confers no rights. assume risk use.



Windows Server  >  Hyper-V



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