It is all just black. Nothing shows up.
Desktop computer (Dell Optiplex 790)
Manjaro Linux with Firefox web-browser
My Question or Issue
Solved! Go to Solution.
I had it working the day after I reported the issue.
I had another issue as well, and when I solved the other one the Spotify issue also was solved.
It was a timing issue. The computer clock was not syncronized.
But there was no warning message of any kind to give you a hint what was wrong, just a black screen.