[yocto] Problems running image in qemu (x86)

[Alex J Lennon]

Hi,

I'm bringing the Mono build up to date in the meta-mono layer and ran
into a problem with my testing.

I generally target QEMU, e.g. qemux86, build a core-image-sato based
Mono test image and run up with 'runqemu qemux86'

It's a remote build system so I am SSH'd in with VNC port forwarding and
I view the QEMU box running with a TightVNC client.

This has worked well for a long time, and still works fine with the
current krogoth branch.

I have just built against master though and am seeing screen corruption.

e.g. https://postimg.org/image/xjcdybdul

Can anybody tell me what's changed?

Thanks,

Alex