I got this error but I'm also getting an error about nvidia-prime not installing correctly.
The following packages will be upgraded: nvidia-prime 1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. Need to get 0 B/11.4 kB of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] Y (Reading database ... 280128 files and directories currently installed.) Preparing to unpack .../nvidia-prime_0.6.7_amd64.deb ... Failed to issue method call: Unit nvidia-prime.service not loaded. invoke-rc.d: initscript nvidia-prime, action "stop" failed. dpkg: warning: subprocess old pre-removal script returned error exit status 5 dpkg: trying script from the new package instead ... Failed to issue method call: Unit nvidia-prime.service not loaded. invoke-rc.d: initscript nvidia-prime, action "stop" failed. dpkg: error processing archive /var/cache/apt/archives/nvidia-prime_0.6.7_amd64.deb (--unpack): subprocess new pre-removal script returned error exit status 5 Failed to issue method call: Unit nvidia-prime.service failed to load: No such file or directory. invoke-rc.d: initscript nvidia-prime, action "start" failed. dpkg: error while cleaning up: subprocess installed post-installation script returned error exit status 6 Errors were encountered while processing: /var/cache/apt/archives/nvidia-prime_0.6.7_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1379985 Title: nvidia-331 331.89-0ubuntu5: nvidia-331 kernel module failed to build To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-331/+bug/1379985/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs