532
votes
23answers
484k views

How can PPAs be removed?

I've added many PPAs using the add-apt-repository command. Is there a simple way to remove these PPAs? I've checked in /etc/apt/sources.list for the appropriate deb lines but they aren't there. This ...
32
votes
3answers
65k views

How to remove a repository? [duplicate]

Please let me know how to remove certain repositories in Ubuntu 11.04. I am getting the following errors while updating. sudo apt-get update Err http://ppa.launchpad.net natty/main Sources ...
9
votes
1answer
2k views

Error during apt-get update [duplicate]

While running apt-get i get the following error :- W: GPG error: https://dl.bintray.com Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ...
8
votes
2answers
28k views

Errors when running apt-get update?

W: Failed to fetch http://dl.google.com/linux/deb/dists/raring/Release.gpg Something wicked happened resolving 'dl.google.com:http' (-11 - System error) W: Failed to fetch ...
6
votes
1answer
47k views

update on ubuntu 14.04 “E: Some index files failed to download. They have been ignored, or old ones used instead.” [duplicate]

I called sudo apt-get update, i got something like this Err http: //ppa.launchpad.net trusty/main i386 Packages 404 Not Found this Err http: //ppa.launchpad.net trusty/main i386 Packages 404 ...
6
votes
1answer
4k views

Update information is outdated [duplicate]

Possible Duplicate: How can I fix a 404 Error using a PPA? I can't remove the red triangle in the right upper corner of my desktop. When I type sudo apt-get update && sudo apt-get ...
6
votes
0answers
436 views

How can I fix a 404 Error using the Ubuntu archives? [duplicate]

Possible Duplicate: How to install software or upgrade from old unsupported release? When running an update I get these errors: :Failed to fetch ...
4
votes
4answers
14k views

How to I install a free NX server? [duplicate]

Possible Duplicate: How can I fix a 404 Error using a PPA? I was trying to install it and I got something like this... W: Failed to fetch ...
4
votes
3answers
3k views

Why do I keep getting 'failed to download' error whenever I try to download anything from the terminal? [duplicate]

W: Failed to fetch http://ppa.launchpad.net/ferramroberto/java/ubuntu/dists/raring/main/binary-amd64/Packages 404 Not Found W: Failed to fetch ...
4
votes
1answer
10k views

Error apt-get update on ubuntu 14.10 [duplicate]

i get an error when i update my ubuntu 14.10 this is an error : Err http://ppa.launchpad.net utopic/main amd64 Packages 404 Not Found Err http://ppa.launchpad.net ...
4
votes
3answers
3k views

“GPG error:The following signatures were invalid: KEYEXPIRED”

The error I am having when trying to update my package list. W: GPG error: http://download.opensuse.org ./ Release: The following signatures were invalid: KEYEXPIRED 1436387333 E: Some index files ...
4
votes
1answer
11k views

“The update information is outdated.” error in ubuntu 13.04 [duplicate]

I use Ubuntu 13.04 32bit in a dell studio 1537. Its been a couple of days, I see a error/warning sign (a red triangle with exclamation sign in it) on the top bar. Clicking on it the message says, "The ...
4
votes
0answers
414 views

Why I am getting “404 Not Found” errors for a ppa when updating? [duplicate]

Possible Duplicate: How can I fix a 404 Error using a PPA? I get these errors with Update Manager (or apt-get), but am still able to download and install updates. How do I fix it? W:Failed ...
3
votes
3answers
3k views

PPA 404 error when installing Flux on Ubuntu 13.10

Whenever I try and Install Flux (in terminal) and I type in "sudo apt-get update", it says: Failed to fetch http://ppa.launchpad.net/kilian/f.lux/ubuntu/dists/saucy/main/binary-i386/Packages 404 ...
3
votes
1answer
11k views

How to solve problem with repositories and update information is outdated message 14.04

I am still new to linux and currently using 14.04 and not sure what to do to solve this situation. The problem arose as I was just trying to install spotify following this guide and I found myself ...

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