I did a little bit of more triaging: Staying on my Linux acer07 4.8.0-21-generic #23-Ubuntu SMP Tue Oct 4 18:27:25 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux and only upgrading from "nvidia-304 304.131-0ubuntu5" to "nvidia-304 304.132-0ubuntu1" brings up this problem.
On the other hand, staying on "nvidia-304 304.131-0ubuntu5" and doing a complete "apt-get dist-upgrade" otherwise, results in a completely functioning system. So looks like this problem is more connected with nvidia-304 versions than kernel versions. My workaround is (thanks to BTRFS allowing me to boot into various snapshots and having the earlier driver version available): $ cat /etc/apt/preferences.d/nvidia-304_mtrr-prob.pref Package: nvidia-304 Pin: version 304.132-0ubuntu1 Pin-Priority: -1 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-304 in Ubuntu. https://bugs.launchpad.net/bugs/1634802 Title: Could not insert module To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-304/+bug/1634802/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp