Hello,
From what I gather from a quick internet search, this error message
could be caused by a known bug in the QXL driver that had been solved
but the solution to solve it was introducing even more serious problems
so it had to be reverted and the bug reintroduced.
Therefore, if QXL is used as a driver to a VM, a solution could be to:
- not use a driver at all if the guest is a non-GUI one and the
virtualisation tools used here allow it.
- prevent the loading of the QXL module in the guest if it has a modular
kernel
- use another driver: for a non-GUI guest, probably the simpler the
better (VGA of some kind), for a nix-like GUI guest with KVM/QEMU host,
the virtio driver seems the best option.