Ubuntu 18.04 graphical issue with OVMF

[Patrick Fox]

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 wrong place. This problem was originally discovered when installing Ubuntu 18 on a xen hypervisor with Secure Boot enabled.

My suspicion is that its a problem with OVMF and Ubuntu. Issues can also be solved by switching to vga=cirrus.

[Patrick Fox (pnfox)]

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 and don't press enter then system will be corrupted.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1781987/+editstatus and add the package name in the text box next to the word Package.

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