I recently asked a question about my screen going black after the login. It turns out that I made a really stupid mistake. My laptop with Ubuntu has a shortcut on the keyboard that allows me to toggle between monitors. When there is no other monitor connected the build-in screen simply goes black.
I could post the solutions as an answer to my own question but the bottom line is don't be stupid. Also, it's also only applicable for this specific type of laptop I reckon.
What do you, as a community, recommend? Answer my own question or explain the solution to the people trying to help me and delete the question in a few days?