Why can't I install Latex in ubuntu12.04? [duplicate]

Question

When I run $ sudo apt-get install texlive-latex-base it showed the following error.

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  libgraphite3 libkpathsea6 libptexenc1 libreadline5 libruby1.8 lmodern luatex
  ruby ruby1.8 tex-common texlive-base texlive-binaries texlive-common
  texlive-doc-base texlive-latex-base-doc texlive-luatex
Suggested packages:
  ri ruby-dev ruby1.8-examples ri1.8 perl-tk
The following NEW packages will be installed:
  libgraphite3 libkpathsea6 libptexenc1 libreadline5 libruby1.8 lmodern luatex
  ruby ruby1.8 tex-common texlive-base texlive-binaries texlive-common
  texlive-doc-base texlive-latex-base texlive-latex-base-doc texlive-luatex
0 upgraded, 17 newly installed, 0 to remove and 0 not upgraded.
Need to get 35.0 MB/102 MB of archives.
After this operation, 201 MB of additional disk space will be used.
Do you want to continue [Y/n]? Y
Err http://ppa.launchpad.net/texlive-backports/ppa/ubuntu/ precise/main lmodern all 2.004.1-5~precise1
Connection failed
Err http://ppa.launchpad.net/texlive-backports/ppa/ubuntu/ precise/main texlive-binaries i386 2012.20120628-1~ubuntu12.04.1
Connection failed
Failed to fetch http://ppa.launchpad.net/texlive-backports/ppa/ubuntu/pool/main/l/lmodern/lmodern_2.004.1-5~precise1_all.deb  Connection failed
Failed to fetch http://ppa.launchpad.net/texlive-backports/ppa/ubuntu/pool/main/t/texlive-bin/texlive-binaries_2012.20120628-1~ubuntu12.04.1_i386.deb  Connection failed
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

I also tried $ sudo apt-get install --fix-missing texlive-latex-base which showed the error

naveen@naveen-Inspiron-3521:~$ sudo apt-get install --fix-missing texlive-latex-base
[sudo] password for naveen: 
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
lmodern luatex tex-common texlive-base texlive-binaries texlive-common
texlive-doc-base texlive-latex-base-doc texlive-luatex
Suggested packages:
perl-tk
The following NEW packages will be installed:
lmodern luatex tex-common texlive-base texlive-binaries texlive-common
texlive-doc-base texlive-latex-base texlive-latex-base-doc texlive-luatex
0 upgraded, 10 newly installed, 0 to remove and 0 not upgraded.
Need to get 48.2 MB/87.6 MB of archives.
After this operation, 169 MB of additional disk space will be used.
Do you want to continue [Y/n]? y
Err http://archive.ubuntu.com/ubuntu/ precise/main texlive-binaries i386 2009-11ubuntu2
Connection failed [IP: 91.189.92.201 80]
Err http://archive.ubuntu.com/ubuntu/ precise/main texlive-latex-base-doc all 2009-15
Connection failed [IP: 91.189.91.13 80]
Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/t/texlive-bin/texlive-binaries_2009-11ubuntu2_i386.deb  Connection failed [IP: 91.189.92.201 80]
Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/t/texlive-base/texlive-latex-base-doc_2009-15_all.deb  Connection failed [IP: 91.189.91.13 80]
Unable to correct missing packages.

    E: Aborting install.

How can I get rid of this problem?

Answer 1

I also faced this type of problem when I choose a custom server for update. If those repository is not available then this type of problem occurs.

First go to dashboard and search for software and updates. Now change the option like this and select download from option to Main Server

Now open Terminal (ctrl+alt+t)
Type

sudo apt-get clean && sudo apt-get update

After completing previous operation

sudo apt-get upgrade

and then

sudo apt-get install --fix-missing

Now this will keep you up to date to the main repository. Then try your operation

sudo apt-get install texlive-latex-base

Answer 2

1. Update packages

   sudo apt-get update

2. Or with --fix-missing option

   sudo apt-get install --fix-missing texlive-latex-base