That is the cause. With the changes in 0.2.91.7 gpu-manager will find the blacklist entries in bumblebee.conf and not load the nvidia module.
However, bumblebee appears to be for supporting laptops with NVIDIA Optimus. From a very quick look at the description disabling the nvidia module seems like it could be by design. Are you using bumblebee? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1374871 Title: upgrade from 0.2.91.6 to 0.2.91.7 breaks my X.org (nvidia) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-drivers-common/+bug/1374871/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs