Here are the steps in installing the latest V4L drivers.
1. Load up a terminal window if you are in the graphic interface.
2. Type in the following to install gcc, mercurial and the kernel headers:
sudo apt-get install build-essential mercurial linux-headers-`uname -r`
3. Move to the /usr/src/ folder with:
cd /usr/src
4. Download the latest V4L drivers with:
sudo hg clone http://linuxtv.org/hg/v4l-dvb
5. Move into the newly created folder with
cd v4l-dvb
6. Now start the building process with:
sudo make
This will take a while.
7. And finally we install these drivers with:
sudo make install
8. Reboot your computer and the newer V4L drivers will be used.