Yes, Nvidida indeed. 750 GTX in one system, 970 GTX in the other one. Oddly enough, the videos now play for me as well ...
I guess that would confirm your suspicions about the video hardware. My apt history shows that libnvidia-390 was updated only three days ago. I would not be surprised if it contained the fix that was needed. I think we can call this one solved. Thanks for the assistance! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767089 Title: totem cannot play h.264 on 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/1767089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs