Your kernel log in comment #2 is showing a lot of crashes in the nouveau kernel driver. The best and only remedies for that are:
(a) Install a newer kernel or just install a newer version of Ubuntu. Ubuntu 19.04: http://releases.ubuntu.com/19.04/ or kernel packages: https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D or (b) Continue trying to get the Nvidia proprietary driver working, per bug 1830000. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1830029 Title: nouveau driver for nvidia is sluggish on GTX970M to the point of unusability To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1830029/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
