For the next person reading this post, in case it helps:
After the first disc, I had problems again, but switching the video output to opengl fixed it. Since then, I have twice had to go and change it from opengl to something else, and back to opengl again to successfully play dvds.
For the next person reading this post, in case it helps:
After the first disc, I had problems again, but switching the video output to opengl fixed it. Since then, I have twice had to go and change it from opengl to something else, and back to opengl again to successfully play dvds.