The fact that /var/log/prime-offload.log is missing, means that the program that is supposed to tell the system to use prime is not being used.
Please attach the following files: 1) /etc/lightdm/lightdm.conf 2) all the files in /etc/lightdm/lightdm.conf.d/ You can still use pastebin as you did before. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1274822 Title: latest update breaks nvidia-prime and produces blank screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1274822/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs