On 7/8/20 5:40 PM, bradbury9 wrote:
Hi,
I have an integrated Intel graphics card and a Nvidia GTX 1080. I want to
set the integrated GPU as primary device, and create a windows standalone
VM (without qubes tools) for gaming.
My motherboard, don't know why, ignores when I set the integrated card as
primary GPU and default to "automatic", so now I am trying to hide the 1080
devices (VGA is 01:00.0 and audio is 01:00.1) so Xen defaults to the Intel
graphics card and I could passthrough the NVidia card.
I have googled a bit, and looks like I have to add to /etc/default/grub the
following content:
rd.qubes.hide_pci=01:00.0,01:00.1 modprobe=xen-pciback.passthrough=1
xen-pciback.permissive
Problem: I see no /etc/default/grub nor /usr/share/grub/default in dom0...
How can I do the PCI hiding? Is there a sample grub config file anywhere?
Disk is encrypted, what additional steps should I do to get LUKS working
after the grub reinstall?
And finally, has anyone got experience with standalone windows VM with GPU
attached instalation? Any tips would be appreciated. :-)
I am interested in exactly the same. My machine has integrated gpu and
discreet nvidia nvs 4200m. I do have an option in my BIOS that allows
the OS to automatically pass video processing to the discreet gpu if
demand is more than what the integrated gpu can handle. This happens
seamlessly to the OS. The description next to the setting says that it
should only be enabled with windowz 7 but I have it enabled with Qubes
and it works perfectly fine. If I disable the BIOS setting I suspect the
discreet gpu is not used by Qubes at all but I must still verify that.
If what I suspect is true I should be able to pass the discreet pci
device through to a vm. If I try that with the setting enabled Qubes
farts and restarts. Expected obviously as the pci device is in use. So I
know it is definitely using it right now.
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