Hi,
Usually, I changed my driver version whith
sudo apt-get purge nvidia-*
sudo apt-get install nvidia-346 nvidia-settings nvidia-prime
sudo apt-get purge nvidia-*
sudo apt-get install nvidia-372 nvidia-settings nvidia-prime
....
But then, I upgraded my kernel with nvidia driver installed :
sudo apt-get purge nvidia-*
sudo apt-get install nvidia-346 nvidia-settings nvidia-prime
sudo apt-get install linux-generic-lts-xenial
And now, purging nvidia-* is not possible anymore, sudo apt-get purge nvidia-* gives (same problem with remove):
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package nvidia-bug-report.log
E: Couldn't find any package by regex 'nvidia-bug-report.log'
E: Unable to locate package nvidia-bug-report.log.gz
E: Couldn't find any package by regex 'nvidia-bug-report.log.gz'
Is isn’t much of a problem as I can still remove package individually, but what is happening ?