The nvidia-340 package does not exist on the latest LTS (14.04).
user@host:~$ sudo apt-get install nvidia-340 Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package nvidia-340
The nvidia-340 package does not exist on the latest LTS (14.04).
user@host:~$ sudo apt-get install nvidia-340
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package nvidia-340