qemu: doesn't support VNC by default

[aabdelfattah (Ahmed Abdelfattah)]

When trying to use vnc argument i get this error:

qemu-system-x86_64: -display vnc=127.0.0.1:1: VNC support is disabled

My command

qemu-system-x86_64 -drive file=my-image-ui-qemux86-64.wic,if=virtio,format=raw -kernel bzImage \
     -append 'root=/dev/vda2 rw mem=8192M ip=dhcp console=hvc0 oprofile.timer=1' \
     -m 8192 -cpu SandyBridge-v1 -smp 6 -device virtio-serial -chardev stdio,id=cons -device virtconsole,chardev=cons \
     -vga virtio -display vnc=127.0.0.1:1 -M accel=hvf -usb -device usb-tablet \
     -object rng-random,filename=/dev/urandom,id=rng0 \
     -device virtio-rng-pci,rng=rng0 -usb -device usb-ehci -object cryptodev-backend-builtin,id=cy0 \
     -device virtio-crypto-pci,id=crypto0,cryptodev=cy0 -device virtio-keyboard-pci -device virtio-mouse-pci \
     -device virtio-tablet-pci -device intel-hda -device hda-output \
     -netdev user,id=net0,hostfwd=tcp::5555-:22,net=192.168.7.0/24,host=192.168.7.1,dhcpstart=192.168.7.2 \
     -device virtio-net-pci,netdev=net0

[jmroot (Joshua Root)]

There is a vnc variant.

[raimue (Rainer Müller)]

Yes, you need to install the +vnc variant. It is not enabled by default, because it pulls in additional libraries such as gnutls and cyrus-sasl2.

Use this command to switch to qemu with the +vnc variant enabled:

sudo port upgrade --enforce-variants qemu +vnc