Ubuntu 18.04，我通过 apt install nvidia-driver-450 升级到 450 版驱动后，440 驱动包被自动删除。一切正常，但 apt 总是要求我升级这些软件包：
$ apt list --upgradable
Listing... Done
libnvidia-cfg1-450/unknown 450.36.06-0ubuntu1 amd64 [upgradable from: 450.36.06-0ubuntu1]
libnvidia-common-450/unknown 450.36.06-0ubuntu1 all [upgradable from: 450.36.06-0ubuntu1]
libnvidia-compute-450/unknown 450.36.06-0ubuntu1 amd64 [upgradable from: 450.36.06-0ubuntu1]
libnvidia-decode-450/unknown 450.36.06-0ubuntu1 amd64 [upgradable from: 450.36.06-0ubuntu1]
libnvidia-encode-450/unknown 450.36.06-0ubuntu1 amd64 [upgradable from: 450.36.06-0ubuntu1]
libnvidia-fbc1-450/unknown 450.36.06-0ubuntu1 amd64 [upgradable from: 450.36.06-0ubuntu1]
libnvidia-gl-450/unknown 450.36.06-0ubuntu1 amd64 [upgradable from: 450.36.06-0ubuntu1]
libnvidia-ifr1-450/unknown 450.36.06-0ubuntu1 amd64 [upgradable from: 450.36.06-0ubuntu1]
libxnvctrl0/unknown 450.36.06-0ubuntu1 amd64 [upgradable from: 450.36.06-0ubuntu1]
numix-icon-theme-circle/bionic,bionic 19.12.27+202006072001~ubuntu18.04.1 all [upgradable from: 19.12.27+202005141854~ubuntu18.04.1]
nvidia-dkms-450/unknown 450.36.06-0ubuntu1 amd64 …