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I am on Ubuntu 14.04 and it always show me the little icon for updates, I do it and every time it show me this message : 

W:Failed to fetch (http)://ppa.launchpad.net/c-korn/ppa/ubuntu/dists/trusty/main/source/Sources 404 Not Found ,
W:Failed to fetch (http)://ppa.launchpad.net/c-korn/ppa/ubuntu/dists/trusty/main/binary-amd64/Packages 404 Not Found ,
W:Failed to fetch (http)://ppa.launchpad.net/c-korn/ppa/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found ,      
E:Some index files failed to download. They have been ignored, or old ones used instead.

I googled and didn't find any "accurate" solution for this error, do you think is my nvidia driver the problemes ( I use the nvidia driver giving in software and updates : proprietary, tested) ? Because I have some little problems to make my Nvidia drivers work well.

Pilot6
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Carl hC
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  • And what is that c-korn ppa? It probably does not exist. Just remove that ppa. – Pilot6 Nov 13 '15 at 16:33
  • @Pilot6 : I tryed to find those PPA to remove them and can't find :/ – Carl hC Nov 13 '15 at 17:05
  • Where did you look for it? – Pilot6 Nov 13 '15 at 17:06
  • Please [edit] your question and add output of ls /etc/apt/sources.list.d terminal command. – Pilot6 Nov 13 '15 at 17:07
  • I try to search in Ubuntu synaptic, and also I found out about the "ls /etc/apt/sources.list.d" and they were saying to add a "#" before the one I wanted to "disable" and still didn't find it. I am currently at work but I will add it when back home :) also thank you for trying to help me ! – Carl hC Nov 13 '15 at 17:26

1 Answers1

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This is not the nvidia drivers - someone (you?) has added a PPA for the purpose of installing some software. The PPA in question however, does not support Ubuntu 14, only Ubuntu 16.

Open Software & Updates, look for a line similar to http://ppa:launchpad.net/c-korn... and uncheck the line. After that, you should be fine.

Charles Green
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