I just finished building my own PC and I would like to install Ubuntu 18.04 LTS in a dual-boot with my already-installed Windows 10.
Here's an example of a split-screen in BIOS mode. In UEFI mode, you can't see anything at all!
Needless to say, I'm glad I picked "Try Ubuntu". Apparently there are some issues with AMD APUs / recent kernels? I'm running a Ryzen 5 2400G and HDMI out through the motherboard.
https://community.amd.com/thread/228018
Any advice appreciated!
This split screen problem could be solved with a simple trick. You insert your usb drive, start the PC, when the GRUB2 screen shows up press E on your keyboard (no upper case). A black screen with set parameters will open. Find the line linux/boot ending with quiet splash. Insert nomodeset before quiet splash. Then press Ctrl-x or F10 to start. You should have a full screen for your installation.