Lol, I think you grabbed the version of mesa from the testing repository. They must have uploaded it to the archives early. It should be fine though.
Did you remove the space when adding the ,?
Ha, ha - of course not! Works now. 
Cool, my wording was a bit misleading when I said I forgot the comma, so you probably just added a , rather than replacing the space with a comma.
Exactly! @pebcak - as a wise man once said.
I’ll give the porprietary driver a try, later. For the moment I work on with this setting. Thank you very much for your time in helping me with this issue.
No problem glad we could get it working again. Even if it took longer than either of us would have liked.
I learned a lot about Arch. That’s why I decided to install Endeavouros.