I'm not exactly a newb, but I am when it comes to troubleshooting. I was attempting to get RDP from my Win 10 box to Ubuntu working so I followed these instructions
I did section 1 for Ubuntu 18.04 and followed everything even the ufw portion. Suddenly my computer froze (or at least I thought it did) and so I held the power button and rebooted. Now the keyboard and touchpad on my laptop don't work anymore when the login screen comes up. I can tell it isn't frozen because the time still increments and the screen fades if I wait long enough.
I figured out how to bypass the GUI and get into root by holding shift when the laptop is booting, so I disabled ufw and xrdp, deleted the file I had created, etc. But when I reboot, I still get nothing. I can ssh from my Windows machine but I have no idea what I can do to troubleshoot the issue. I've tried plugging in usb keyboards and mice, but they don't work either.