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#1 2014-09-02 06:05:47

3000
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Registered: 2013-01-18
Posts: 47

Xen 4.4 - turn off GPU when Windows shuts?

Hi everyone, I got an interesting question regarding XEN. I have been using it successfully for some time now. I have set up Windows 8.1 as an HVM with secondary GPU passthrough. It couldn't be more perfect.

But I am about to upgrade my HTPC and want to buy a high-end NVIDIA GPU for gaming in Windows 8.1. Right now I have a passive AMD and it isn't really made for gaming of course.

So, the Nvidia I will buy won't be passive, therefore making noise. I know AMD has ZeroCore, but Nvidia doesn't.

So my question is: Will the GPU turn off completely once I shut down Windows 8.1? So I can still have archlinux running and using the integrated GPU from Intel? Or will I still here the GPU spinning?

Even though I have a working setup, I can't tell because I have never had a discrete GPU with fan before in my HTPC.


Hope you can help me with this.

Thanks a lot for your insight!

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#2 2014-09-02 16:26:15

rebootl
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Registered: 2012-01-10
Posts: 431
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Re: Xen 4.4 - turn off GPU when Windows shuts?

I don't want to question the profound knowledge of this forum, but I think that's a hard one. Maybe you'd get this info on a dedicated xen forum... ?

If I'd have to guess, I'd say no. I think the GPU is always on. I don't think xen switches it off, why should it ?


Personal website: reboot.li
GitHub: github.com/rebootl

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#3 2014-09-02 19:14:06

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Registered: 2013-01-18
Posts: 47

Re: Xen 4.4 - turn off GPU when Windows shuts?

yeah, you're probably right. If it isn't passed through Windows, it's active in Linux.

But maybe, there is a way to shut it down through some clever Linux command. I am just thinking. If anyone has a Suggestion, be my guest.

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