$ sudo apt install --just-print nvidia-driver-440 Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: nvidia-driver-440 : Depends: libnvidia-compute-440 (= 440.33.01-0ubuntu1) but 440.59-0ubuntu0.18.04.1 is to be installed Depends: libnvidia-decode-440 (= 440.33.01-0ubuntu1) but it is not going to be installed Depends: libnvidia-encode-440 (= 440.33.01-0ubuntu1) but it is not going to be installed Recommends: nvidia-settings but it is not going to be installed Recommends: nvidia-prime (>= 0.8) but it is not going to be installed Recommends: libnvidia-compute-440:i386 (= 440.33.01-0ubuntu1) Recommends: libnvidia-decode-440:i386 (= 440.33.01-0ubuntu1) Recommends: libnvidia-encode-440:i386 (= 440.33.01-0ubuntu1) Recommends: libnvidia-ifr1-440:i386 (= 440.33.01-0ubuntu1) Recommends: libnvidia-fbc1-440:i386 (= 440.33.01-0ubuntu1) Recommends: libnvidia-gl-440:i386 (= 440.33.01-0ubuntu1) E: Unable to correct problems, you have held broken packages.
と出たので、nvidiaとlibnvidiaをアンインストールした
$ sudo apt remove nvidia* $ sudo apt remove libnvidia*