I see the '/etc/modprobe.d is not a file' message on Ubuntu 15.04 with my AMD/ATI Radeon HD 7850 video card (so its not isolated to nvidia).
$ sudo lshw -c video | grep driver configuration: driver=radeon latency=0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1369216 Title: gpu-manager: /etc/modprobe.d is not a file To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1369216/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs