I've just removed
acpi=off in updated
Ubuntu 17.04 by Grub Customizer utility. And now I can't boot even with
acpi=off parameter! I can see only white/orange dots on small rectangles in the center of the screen.
Also, I tried different kernels - 126.96.36.199, 33 (default) and 35 - with no success.
What can I do to fix it?
P.S. I'm using
MSI X299 SLI motherboard. It has extremely buggy chipset
X299 on board. But it worked perfectly fine with updated Ubuntu until I saved the new GRUB configuration.