[libvirt] Do different Virgil3D users running have the same CANVAS fingerprint?

[bancfc at openmailbox.org]

On 2016-12-27 04:05, bancfc at openmailbox.org wrote:
> Background:
> Canvas fingerprinting is a technique to track users based on their
> GPUs. https://en.wikipedia.org/wiki/Canvas_fingerprinting
> 
> Someone did some testing and the good news is the fingerprint is
> common for all users of the same OS across all KVM users because it
> presents the same virtual GPU/drivers for everybody.
> 
> What I need your help to find out is whether this holds for Virgil3D
> users that enable graphics acceleration. (I am running on Debian and
> the libvirt version in the repos is too old to have this included also
> I don't have multiple machines)
> 
> 
> To test this you need:
> 
> To run plain FireFox on a virtualized distro (with GL acceleration
> enabled in libvirt) of your choice and visit
> https://browserleaks.com/canvas . Then repeat the same steps with that
> same distro (in a VM) on another physical machine and compare values.
> 
> A good result is if you see the same numbers for both machines. That
> means the virtual device  fingerprint is uniform for all virtual
> users.

Bumping. I realized I post this in holiday season when it was easily 
missed.

Since CANVAS is about graphics drivers version the question can be 
simplified: Is the virtio-gpu driver version uniform across KVM 
versions?