Ubuntu – apt-get update constantly gives out error

aptupdates

Lately whenever I run 

sudo apt-get update

it gives me the following error after the 'reading database' step

W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ precise/partner amd64 Packages (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_precise_partner_binary-amd64_Packages)
W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ precise/partner i386 Packages (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_precise_partner_binary-i386_Packages)
W: You may want to run apt-get update to correct these problems

Well I have run apt-get update over and over again and nothing changed.
I also tried the options

sudo apt-get update --fix-missing

and

sudo apt-get update -f

which are really the same thing I know, but nothing seems to help.

Best Answer

You seem to have both 32 and 64 bit repositories enabled and so you have two incompatible sources available. To find out whether your system architecture is 32 or 64 bit, enter in the terminal 

uname -i

If you are running a 32 bit system, the output will contain:

 i386

Thus, for a 32bit system, open your sources.list file with gedit:

gksudo gedit /etc/apt/sources.list

and remove completely any line that contains amd64 Packages.

Obviously, for a 64bit system remove the line that contains the i386 packages.

After you have edited your sources.list, saved it, and closed gedit, enter these commands:

sudo apt-get update  
sudo apt-get -f install
Related Question