see here concerning the nvidia-prime window.. https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1758214
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1752739 Title: PRIME Synchronization doesn't work with linux-kernel 4.15. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/+bug/1752739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs