** Attachment added: "Screenshot of graphical problem"
https://bugs.launchpad.net/ubuntu/+bug/1781987/+attachment/5164236/+files/qemu.png
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https://bugs.launchpad.net/bugs/1781987
Here is a copy of a working /boot/grub/grub.cfg file that fixed a
problem.
When using QEMU, apply some of this config to broken one (UUIDs will not be the
same for you!!)
and then when grub menu appears press enter on Ubuntu option to enter non
broken machine. If you let grub timeout play out
Public bug reported:
Running Ubuntu 18.04 Server virtual machine with UEFI enabled there
appears to be graphical issues (pixels in wrong place).
These issues can be temporarily fixed by changing the gfxmode in grub
config. But from time to time Ubuntu boots into a machine that has
pixels in
