Alex, yeah, I know that x8 Gen3 is not really limiting the 750 Ti, but I plan to buy a new graphics card in some years and I am worried this will be the bottleneck for future GPUs. I am rebooting my host daily, so that sound issue should not be a problem. Regarding the host drivers binding to the GPU, I am using vfio-pci. As I understood it once the GPU has been bound to vfio-pci at boot no host drivers can bind it. Also this connection remains until host shutdown if I don't unbind it manually (why would I do that?). Or am I wrong here?
So for my setup I have created /etc/modprobe.d/vfio.conf: options vfio-pci ids=10de:1380,10de:0fbc And put this into the mkinitcpio.conf: MODULES="vfio vfio_iommu_type1 vfio_pci vfio_virqfd" I just read your blog post again and noticed I have not put options vfio-pci disable_vga=1 in my modprobe.d yet, would that help? Regards, Jens 2016-02-18 23:03 GMT+01:00 Mario Goebbels <[email protected]>: > You can assign it to the VM if you want, altho you don't need to, if you > don't use HDMI audio. I never assigned it to the VM and VGA passthrough > worked fine. I'm just saying, once you've bound vfio-pci to it, leave it > assigned to the HDMI audio device. Unbinding vfio-pci from GPU audio > frequently caused a kernel oops or locked up the system over here. > > And yes, a full shutdown (holding down SHIFT while clicking on Start -> > Shutdown) bypasses the fast startup. I'm not sure how fast startup messes > with the shutdown sequence, but QEMU doesn't like it one bit. > > Regards, > -mg > > > On Thu, Feb 18, 2016 at 9:06 PM, Jens Zimmermann < > [email protected]> wrote: > >> >> Mario, I am using vfio-pci to bind the GPU audio and then assign it to >> the VM. So are you suggesting to not assign it to the VM in the first place >> or what do you do? :-) >> Concerning Windows fast startup, I know about the option you are talking >> about and I had searched for it before already, but it does not exist on my >> Windows for whatever reason (maybe because it is not activated yet). If I >> understand it correctly the full shutdown should prevent the fast startup >> though. >> >>
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