Ah; ok thanks Tim. I've been trying various Linux distros here the last two days to see what actually works. ClearOS has been nice because the web interface is so good you don't really need a monitor until you want a monitor and then it's a little tougher.

Linux Mint I've used on other systems, but it won't boot up natively and support the raid controller I happen to have on this motherboard. I tried both openSUSE Leap and Fedora--both of those do work and have their own advantages. I'll keep experimenting a bit here as I'm sure ClearOS 7.x will also work fine; it just comes down to what I need/want to do with this computer in the future.

Thanks for the link too; I'll bookmark both this and the 7.x GUI install page for future use. Maybe someday, there will be an "app for that" too. Sorry.