I can't see anything obviously wrong with your kernel output. It seems as if the nvidia_modeset driver has loaded. I assume xrandr --verbose output also reports PRIME sync: 0?
However, the NVidia forum has some reports by people with similar problems, hinting at a potential incompatibility of the 375.39 NVidia driver with at Linux 4.10 from the Ubuntu 17.04 beta. Maybe try with a 4.8 kernel? See https://devtalk.nvidia.com/default/topic/957814/linux/prime-and-prime- synchronization/10 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1674304 Title: PRIME synchronization not working with xserver-1.19.x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1674304/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
