Seems like proprietary Nvidia driver is not there for your graphics card: Kernel modules: nvidiafb, nouveau
** Also affects: nvidia-graphics-drivers (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/1806852 Title: the 4.15.0.42 kernel causes a slower PC To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1806852/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs