Comment 21 for bug 1791542

Installing using `sudo apt-get install nvidia-340/bionic-proposed` + `apt --fix-broken install` fails (as shown above in my comment).

Downloading the nvidia-340_340.107-0ubuntu0.18.04.1_amd64.deb file (after enabling bionic-proposed https://wiki.ubuntu.com/Testing/EnableProposed ):

  $ apt download nvidia-340/bionic-proposed

and installing it using:

  $ sudo dpkg -i nvidia-340_340.107-0ubuntu0.18.04.1_amd64.deb

succeeds.

To fix the previous failed installation, I've run:

  $ sudo apt-get install -f

apt seems to be working now.