I'm unable to successful install Ubuntu 18.04.1 on my new desktop. I have Windows 10 Home installed and running smoothly, I successfully partitioned my HDD and SSD in halves so there is plenty of space to install Ubuntu, and the ISO I burned on my 8GB flashdrive works just fine when I boot my laptop from it.
When I try to boot my desktop from it, I get the normal grub menu, but when I select Install Ubuntu it doesn't work properly.
The first thing that happens is a bunch of lines on the screen saying "Completion-Wait loop timed out".
Then it flashes and I get a much longer string of messages, most of which is letters and numbers and symbols strung together.
At the end is says "end Kernel panic - not syncing: Fatal exception in interrupt"
Now, a few times when I've tried booting my desktop, it made it all the way to the Ubuntu loading screen. That quite got my hopes up, but it crashed and went to some similar black screen full of strange messages.
Secure boot is disabled in my BIOS. I tried editing the "Install Ubuntu" command in grub and adding "nomodeset" but that didn't work.
EDIT: I have successfully dual booted my system now and determined the source of my problem.
I'm running AMD Ryzen 3 2200g CPU and Gigabyte Radeon RX570 GPU, and they don't always play nice, I think due to the processor having integrated graphics. I removed my GPU and it booted from my ISO stick first try with no problems.
When I plug my GPU back in it won't boot up again though. I have installed the latest and greatest drivers from AMD for Ubuntu 18.04 but it still won't boot up in Ubuntu when I have my GPU connected.