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When I run update-manager I have this message:

W:Conflicting distribution: http://deb.opera.com testing Release 
(expected testing but got stable), 
W:Failed to fetch http://deb.opera.com/opera/dists/lenny/non-free/binaryi386Packages      
404  Not Found, E:Some index files failed to download. 
They have been ignored, or old ones used instead.

I have ignore this in the past since it didn't affect my daily usage of my system. Now that I want to update from 12.04 to 14.04, it wont allow me with the same error message.

I have removed Opera but it didn't seem to help

Ay idea about what would help? Thanks Nemo

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  • just comment out the line starting with deb http://deb.opera.com/opera/dists in your /etc/apt/sources.list file. Apr 22, 2014 at 9:24

1 Answer 1

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Since you want to upgrade I would remove the opera repository from your apt sources:

sudo rm /etc/apt/sources.list.d/opera.list*

Once your system properly upgraded to 14.04, download and install opera to set up the repo again.

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  • Thanks for the tip, but sudo rm /etc/apt/sources.list.d/opera.list* rm: cannot remove `/etc/apt/sources.list.d/opera.list*': No such file or directoryls I checked and indeed, there is no "opera" in /etc/apt/sources.list.d/ Could it be somewhere else? Thanks Nemo
    – user272338
    Apr 22, 2014 at 10:07
  • Look in your main sources.list: /etc/apt/sources.list and remove all lines containing opera Apr 22, 2014 at 10:12
  • You should find the correct list file with grep -r opera /etc/apt Apr 22, 2014 at 10:14

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