I am starting a new thread here as my earlier thread was titled for W10. I am running TW on KDE desktop and working on a QEMU/KVM installation for Windows 11. I have the W11 VM up and running but cannot change the display resolution. I have the virtio-win iso installed and I know this works on W10but cannot get the Red Hat driver to load.
For the W11 VM, when I am at the stage in W11 VM Device Manager where I am updating the Display adaptors drivers I have installed the Red Hat driver so this is shown as Red Hat QXL controller but there is an exclamation mark on it and Properties reveal that
“Windows cannot verify the digital signature…”
I have found many threads about this with several remedies but they seem to refer to a VM installation on a Windows machine. I have yet to find a solution for a VM build on a Linux machine.
I have absolutely no problems with Windows 10 VM but Windows 11 has me stuck. Can anybody help please? because I have been unable to overcome a security challenge with the Red Hat display driver.
On reading more it seems my problem may be related to secure boot. This machine has UEFI boot but I could not recall whether I had set secure boot. I recall from earlier advice on this forum that I should not set secure boot when installing the OS but this was a while ago so I thought I had better check. There is what I have found:-
@Budgie2 virtual machines no nothing of the host system BIOS, you could be booting the host in legacy mode and run vm’s with UEFI… when the vm boots press F2 to get to the Tiancore BIOS. Could be, I use gpu passthough to a GT710 for Windows 11.
Hi Malcolm,
I tried the F2 switch but all I get is the Tiancore image on starting and then I get W11. Meanwhile I have a reasonably OK graphics card: AMD Radeon Pro WX 7100. How can I set this for passthrough?
Well that’s up to you… mine is a PCIe X1 GPU, so sitting in the first slot, I don’t need a power horse hence that type… If you want to go down that route, I woiuld look at a Quadro K620 or up, they still have a few more years left andd stil supported in linux with the latest drivers if wanting to use on a linux host.
I’m assuming you have a spare PXIe X16 slot on your system?
How do you access the windows client, here I use a client and spice to connect, that means can be on any system and access if needed.
@Budgie2 Use arrow keys and enter to move around… Device Manager → Secure Boot Configuration, use space to change options, then press F10 to save. Just like if were in a normal system BIOS…
My problem is the number of options available.
There are a 16 Hypervisor Firmware options available when building the VM. No idea which to chose.
If I leave the build with default which seems to be UEFI and then begin the installation and then bring up the Tiancore boot screen I have many choices in each of the three options for selection.
Trouble is the only web suggestions are a bit out of date and do not offer any of the options on my machine. Surely there is some manual somewhere?
So what I have in my latest W11 VM build appears to be as you have posted but I still have the digital signature problem with the Red Hat driver for my display and cannot change the resolution.
I went so far as to run this sytem with W11 signature checking disabled, which did work as expected and I could set the required display resolution but I couldn’t then activate windows.
I am not sure this mattered as eventually W11 seemed to be working.
I have not checked for updates yet and if I reboot I get the same problem again because the dodge to avoid signature checking seems not to be saved.
it’s only there for my amusement (and my wife uses it on occasions…)…