Hi, I have been running an incus VM with Win11 for a while. It uses the “virtio-vga” driver (apparently the default) and virt-viewer on the host (KDE Linux). Unfortunately, the display is very slow (often one can see the screen being drawn) and mouse movement is very sluggish so that it becomes har…

Try switching to the QXL driver: [image] How to run a Windows virtual machine on Incus on Linux Tutorials Do you want resizing of VM’s Screen work? Add: raw.qemu.conf: |- [device "qemu_gpu"] driver = "qxl-vga" bus = "pcie.0" addr = "3.0" Bt…

Just to be sure: I would add ||raw.qemu.conf: |- [device “qemu_gpu”] driver = “qxl-vga” bus = “pcie.0” addr = “3.0”|| (without the double bars) as a single line to the configuration with “incus config edit win11vm” next to the “raw.qemu: …” line, right? I found something like this before on the net …

The “|-” makes the multi line yaml possible. Best is to add it like i pasted it in incus config edit <vm>

Sorry, I missed the link in your post and only saw the post without newlines. I have now added exactly what is in that linked document but get the message: There is no option group 'device “qemu_gpu”’

Please post the output of incus config show <vm> so I can compare with my windows machine. This is mine (removed the “volatile” config keys"): ❯ incus config show win11 architecture: x86_64 config: boot.autostart: "false" image.os: windows 11 limits.cpu: "8" limits.memory: 12GiB raw.qemu…

Here is the same from my configuration: architecture: x86_64 config: image.os: Windows limits.cpu: "4" limits.memory: 6GiB raw.qemu: -cpu host -device intel-hda -device hda-duplex -audio spice raw.qemu.conf: |- [device “qemu_gpu”] driver = “qxl-vga” bus = “pcie.0” addr = “…

Maybe some more info: I am running Incus and the VM under KDE Linux using virt-viewer running in a Ubuntu container (since its not preinstalled and its an image-based distro). A small script “remote-viewer” gets called by Incus and starts “virt-viewer” in the container. But all this should not reall…

I think you have a “ instead of " in that yaml. For me remote-viewer vs. the default viewer makes a big difference, remote-viewer is nicer and works with resizing where the default doesn’t.

If you do not need the graphic performance other than basic desktop experience, it may be better to rdp into the instance.

Thank you very much, @jochumdev ! Those slightly different characters were the issue! Apparently, happened when I copied the text from your (automatically mangled!) message text and not the quoted copy of the configuration text in the linked document. Good to know! I now have very fast display and m…

Display and mouse movement is slow and few resultions offered for Win11 VM

Incus

jochumdev (René Jochum) July 26, 2026, 5:45pm 2

Try switching to the QXL driver: