When I run apt-get update, this happens:

Hit http://dl.google.com stable Release.gpg
Hit http://dl.google.com stable Release                                        
Hit http://security.debian.org wheezy/updates Release.gpg                      
Hit http://packages.crunchbang.org waldorf Release.gpg                         
Hit http://security.debian.org wheezy/updates Release                          
Ign http://ppa.launchpad.net wheezy Release.gpg                                
Hit http://packages.crunchbang.org waldorf Release                             
Hit http://dl.google.com stable/main i386 Packages                             
Ign http://ppa.launchpad.net wheezy Release                                    
Hit http://security.debian.org wheezy/updates/main i386 Packages               
Hit http://security.debian.org wheezy/updates/main Translation-en              
Hit http://packages.crunchbang.org waldorf/main i386 Packages                  
Hit http://http.debian.net wheezy Release.gpg                                  
Ign http://dl.google.com stable/main Translation-en_US               
Ign http://dl.google.com stable/main Translation-en                  
Hit http://http.debian.net wheezy Release                            
Hit http://http.debian.net wheezy/main i386 Packages                           
Hit http://http.debian.net wheezy/contrib i386 Packages                        
Ign http://packages.crunchbang.org waldorf/main Translation-en_US              
Hit http://http.debian.net wheezy/non-free i386 Packages                       
Ign http://packages.crunchbang.org waldorf/main Translation-en                 
Hit http://http.debian.net wheezy/contrib Translation-en             
Hit http://http.debian.net wheezy/main Translation-en                
Hit http://http.debian.net wheezy/non-free Translation-en
Err http://ppa.launchpad.net wheezy/main Sources
  404  Not Found
Err http://ppa.launchpad.net wheezy/main i386 Packages
  404  Not Found
Ign http://ppa.launchpad.net wheezy/main Translation-en_US
Ign http://ppa.launchpad.net wheezy/main Translation-en
W: Failed to fetch http://ppa.launchpad.net/glasen/intel-driver/ubuntu/dists/wheezy/main/source/Sources  404  Not Found

W: Failed to fetch http://ppa.launchpad.net/glasen/intel-driver/ubuntu/dists/wheezy/main/binary-i386/Packages  404  Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.

This has been caused by running apt-add-repository ppa:glasen/intel-driver. How can I undo what has happened from the previous command so that apt-get update works properly?

Note: This is on a Dell Dimension 3000


You just need to edit your sources. apt-add-repository simply adds a new deb line to the system's list of source repositories. These are stored as simple text files in /etc/apt/sources.list and /etc/apt/sources.list.d.

So, first find out where the offending repo is stored:

grep -F ppa.launchpad.net /etc/apt/sources.list /etc/apt/sources.list.d

This will return a list of files that contain the relevant line. For example:

/etc/apt/sources.list: deb http://ppa.launchpad.net/glasen/intel-driver/ ubuntu main

You can then open the listed file in your favorite editor (as root, sudo) and delete or comment out (add a # to the beginning of the line) the relevant lines.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.