i am trying to change the Display driver. but it takes too long. is it normal to take more then 20 miunts?

i am trying to change the Display driver. but it takes too long. is it normal to take more then 20 miunts?

Close the Update Manager. Open a terminal and start
sudo dpkg --configure -a
sudo apt-get install -f
to repair the interrupted installation. Install the driver via
sudo apt-get install nvidia-346
sudo dpkg --configure -a; sudo apt-get install-f. If there are error messages, add them into your question. If not, startsudo apt-get install nvidia-346. – A.B. Oct 20 '15 at 12:58