I’m using a Lenovo Thinkpad which came with Windows but I’ve wiped it and have used Ubuntu 20.04 for quite a while. After some initial issues getting everything to work with 3 external monitors via a docking station everything worked fine.
Today, when I cleaned up my cable setup a bit and stuck everything back in place (probably not every cable at the exact same place) it would not work when I started it.
I had previously followed this:
Is there to make the login screen appear on the external display in 18.04?
Which worked when using the accepted answer but now, no matter what I do seemingly, if I boot the laptop with the external monitors connected they all go black (including the built in display, which is usually fine since I have that disabled and the other 3 enabled).
Does anyone have any idea how this could be solved? The only work around I have currently is to start the computer with nothing connected and then connect everything after it has booted and logged in.
Any help would be appreciated!