Troubles with GPU drivers

[Gebonimo]

Hi Minters,

I have trouble setting up my GPU drivers.

After setting up my VM, I've installed the virtio drivers. But in the VM device manager i see that my GPU is not recognised yet.

I went on amd official website to dl the drivers, but whenever i try to install it, it fails.

Do you have any ideas ?

I'm keep doing research on it but any help could be great

Thanks

[ajgringo619]

A VM virtualizes all hardware, so you'll never see your GPU.

[Gebonimo]

Sorry my english is not very good.

I meant that my device is seen by the Windows device manager but seen as "Unknown Device". (see picture)
https://imgur.com/a/DLHWrcW

I know this is my GPU because when i right click and ask to install the driver automatically it says that this is the AMD Radeon R7 but it can't install the driver due to an unknown error.

I've tried many times to install it manually but it keep failing, I don't know why.

I hope I made myself clearer

[ajgringo619]

OK, so the VM is Windows, correct? What VM software are you using?

[Gebonimo]

Right.

I use qemu-kvm and virt-manager.

Just asking, it might come from this but I can't test for few days, is it possible that the problem is that my Radeon GPU is connected via DVI to an other screen ?

[ajgringo619]

Sorry, I have no experience with QEMU.

[powerhouse]

Well, I don't use virt-manager as it causes more problems than it solves. In order to debug your WIndows VM, convert the xml config file as follows:

Converting from domain XML to QEMU args:

Code: Select all

virsh domxml-to-native qemu-argv win10.xml

or:

Code: Select all

virsh domxml-to-native qemu-argv --domain win10

Can you post the resulting qemu-argv file here?

Make sure iommu is enabled on your machine:

Code: Select all

printf "IOMMU Status: ";   if cat /proc/cmdline|grep -i iommu; then printf "enabled\n";else printf "disabled\n";fi

I assume you attempt to do GPU passthrough.

I've written a tutorial on that where you may find more information and troubleshooting. See: Running Windows 10 on Linux using KVM with VGA Passthrough.

[powerhouse]

Right.

I use qemu-kvm and virt-manager.

Just asking, it might come from this but I can't test for few days, is it possible that the problem is that my Radeon GPU is connected via DVI to an other screen ?

That doesn't matter. See my last post and do the steps in Part 9 - Check Configuration.

[Gebonimo]

I've tried with the W7 VM.

I'll install a Windows 10 VM instead, following your advices and guide (again )

[powerhouse]

W7 doesn't support UEFI out of the box, so my tutorial doesn't work with W7.

Windows 10 supports UEFI which is generally the better option.

You can follow my tutorial also for W7, but need to make some modifications to load Seabios. Haven't done it for a while, but it's easy and there is plenty of documentation on that too.