У вашего броузера проблема в совместимости с HTML5
Run Windows XP and other older Windows version plus x86 Linux on a Raspberry Pi 2 or 3 with working network!
Commands:
sudo apt-get update
sudo apt-get install qemu-kvm qemu virt-manager virt-viewer libvirt-bin
Ubuntu Mate - https://ubuntu-mate.org/raspberry-pi/