Can't you make the script check if it windows or Linux and skip if it's Linux? Best Regards, Strahil Nikolov On Mar 19, 2019 23:02, Darin Schmidt <darinschmidt(a)gmail.com&gt; wrote: You also need to have this code hooked in: cd /usr/libexec/vdsm/hooks/before_vm_start/ vi 99_mask_kvm #!/usr/bin/python2 import hooking domxml = hooking.read_domxml() hyperv = domxml.getElementsByTagName('hyperv')[0] smm = domxml.createElement('vendor_id') smm.setAttribute('state', 'on') smm.setAttribute('value', '1234567890ab') hyperv.appendChild(smm) features = domxml.getElementsByTagName('features')[0] kvm = domxml.createElement('kvm') hidden = domxml.createElement('hidden') hidden.setAttribute('state', 'on') kvm.appendChild(hidden) features.appendChild(kvm) hooking.write_domxml(domxml) only problem now is that I cant boot a linux VM with the vendor_is portion there...... On Mon, Mar 18, 2019 at 3:30 PM Darin Schmidt <darinschmidt(a)gmail.com&gt; wrote: Seems that the system has to be running with bios Q35 UEFI. Standard bios does not work. System is operational now. On Mon, Mar 18, 2019, 6:30 AM Darin Schmidt <darinschmidt(a)gmail.com&gt; wrote: Still no luck getting the gtx 1080 to enable inside the VM. I see the code is being generated in the xml with the hook. But I still get error code 43. Someone mentioned doing it with eufi bios and that worked for them. So when I get back from work today, perhaps ill give that a try. On Mon, Mar 18, 2019, 6:10 AM Darin Schmidt <darinschmidt(a)gmail.com&gt; wrote: I have gotten the system to see the card, its in device manager. The problem seems to be that I cannot use it in the VM because from what I have been finding out is that it gets and error code 43. Nvidia drivers disable the card if it detects that its being used in a VM. I have found some code to use to hook it into the xml before_vm_starts. 99_mask_kvm #!/usr/bin/python2 import hooking domxml = hooking.read_domxml() hyperv = domxml.getElementsByTagName('hyperv')[0] smm = domxml.createElement('vendor_id') smm.setAttribute('state', 'on') smm.setAttribute('value', '1234567890ab') hyperv.appendChild(smm) features = domxml.getElementsByTagName('features')[0] kvm = domxml.createElement('kvm') hidden = domxml.createElement('hidden') hidden.setAttribute('state', 'on') kvm.appendChild(hidden) features.appendChild(kvm) hooking.write_domxml(domxml) I am currently reinstalling the drivers to see if this helps. kvm off and vender_id is now in the xml code that get generated when the VM is started. Im going off of examples Im finding online. Perhaps I just need to add the 10de to it instead of some generic # others are using. On Mon, Mar 18, 2019 at 6:02 AM Nisim Simsolo <nsimsolo(a)redhat.com&gt; wrote: Hi Vendor ID of Nvidia is usually 10de. You can locate 'vendor ID: