On Fri, Jun 02, 2017 at 10:48:08PM +1000, Eddy Pronk wrote:
> On starting the guixsd-usb-install-0.13.0.x86_64-linux image, the
> documentation says:
> 
> qemu-system-x86_64 -m 1024 -smp 1 \
>   -net user -net nic,model=virtio -boot menu=on \
>   -drive file=guixsd.img \
>   -drive file=guixsd-usb-install-0.13.0.system
> 
> I'm using qemu 2.0.0 on Ubuntu 14.04.5.
> 
> At some point during the boot process the console got garbled with snow.

Could you give any more details? Could it be another case of
<https://bugs.gnu.org/24948>?