Comment 69 for bug 1798790

I will try the Wayland parameter option, but for what it's worth, the only way I've been able to recover so far is to boot off a USB thumb drive, mount my actual boot drive, download and run boot-repair. When I reboot, I finally get a grub menu and can institute the usual menu-driven repairs from there. The full boot-repair report can be found at https://paste.ubuntu.com/p/34RRkD365G/.