I am looking for drivers for a CANON PIXMA MP250 for Ubuntu 12.04 LTS.
Anyone knows how to install one?
There is a Canon Printer Driver project page on Launchpad. The packages have not been upgraded for precise yet.
You should be able to install the oneiric files though, as I doubt the dependencies have changed that much.
Go here for the 32-bit or here for the 64-bit drivers.
This will allow for you save the files to your local machine. Once you've saved them you can right click and install the deb file, using a method you prefer.
I will show you the command line method if you prefer. You will need to pull them down the drivers by issuing the following command (In this example I have chosen to use give the commands to pull down the 32-bit drivers, and install them):
wget http://launchpad.net/~michael-gruz/+archive/canon/+files/scangearmp-mp250series_1.70-1ubuntu10_i386.deb
Then install by typing:
sudo dpkg -i scangearmp-mp250series_1.70-1ubuntu10_i386.deb
This works for me at ubuntu 12.04 x64 - canon MP250:
sudo add-apt-repository ppa:michael-gruz/canon-trunk
sudo apt-get update
sudo apt-get install cnijfilter-common
Restart.