Open fabiohsouza opened 8 years ago
Latest in git - libvirtd version 1.3.1. I compile for deb for test
Worked! Debian 8 (host/guest) Kernel: 4.4.0-040400rc7-generic (host/guest) QEMU 2.5 (host) mesa-dev_11.2.0 (host/guest) libdrm-dev_2.4.66 (host/guest) libvirt-namespaces._1.3.1 (host)
https://cgit.freedesktop.org/spice/spice/commit/?id=782c7508e28fdeee786cdcebffd22f772d7f09ec
GL acceleration (virgl)
OpenGL acceleration is currently local only (it has to go through a Unix socket) and it needs guest support. It's currently limited to recent linux distributions (for example up to date Fedora 23 + updated mesa packages from https://copr.fedorainfracloud.org/coprs/kraxel/virgl/[copr:kraxel]).
Configuration
Using libvirt
You need to add a virtio-gpu video device to your virtual machine instead of QXL. [source,xml]
<video> <model type='virtio' heads='1'> <acceleration accel3d='yes'/> </model> </video>
Then you need to enable OpenGL on your SPICE graphics node: [source,xml]
<graphics type='spice' autoport='no'> <gl enable='yes'/> </graphics>
You don't need any port/address as they won't be usable with GL.
Using QEMU
You need to add a virtio-gpu device on QEMU command line, as well as enable GL with SPICE. port/tls-port/addr arguments won't be used in this setup. You need to configure a Unix socket to connect to the VM display.
[source,sh]
-device virtio-vga,virgl=on -spice gl=on,unix,addr=/run/user/1000/spice.sock
Connecting to the guest
Connecting to the guest when virgl is in use is slightly different than usual
If libvirt is being used
[source,sh]
client$ virt-viewer -a $vmname
If a Unix socket has been set on QEMU command line
[source,sh]
client$ remote-viewer spice+unix:///run/user/1000/spice.sock
While enabling virgl works, it breaks the NoVNC viewer as it fails to properly connect to the socket for some reason (blank screen followed by "Unexpected close while ready").
I tryed change to
but an error message saying the video model 'virtio' is not supported.
I am using for tests: Ubuntu 15.10 - Kernel 4.4-rc7 (host/guest) QEMU 2.5 Mesa 11.2 libvirt 1.2.21
https://www.redhat.com/archives/libvir-list/2015-November/msg01245.html