Public bug reported: My PC is an Intel Core I3 and I use the built-in HD 4600 graphics. My display is 1680x1050, connected via DVI-D, Ubuntu version is 15.10 64-bit.
I do a fresh Ubuntu install and install and run glmark2. The horse spins smoothly. I set "System settings -> Displays -> Rotation" to "Counterclockwise", rotate my display and run glmark2 again. The horse totally stutters. When the rotation is "Counterclockwise" other OpenGL applications will even freeze. ** Affects: mesa (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1540194 Title: OpenGL stutter and freeze when rotation = Counterclockwise To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1540194/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs