Unable to run updater in 12.10, 64 bit

Asked by John MacMenigall

Updater terminates with error message " Failed to download repository information check your internet connection". Error message details are:
"W:Failed to fetch cdrom://Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)/dists/precise/main/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
, W:Failed to fetch cdrom://Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)/dists/precise/restricted/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
, W:Failed to fetch cdrom://Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)/dists/precise/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
, W:Failed to fetch cdrom://Ubuntu 12.04 LTS _Precise Pangolin_ - Release amd64 (20120425)/dists/precise/restricted/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
, E:Some index files failed to download. They have been ignored, or old ones used instead."

Internet connection is fine as I'm posting this!!! (and I was checking for updates to Quantal Quetzal, not Precise pangolin).
Any suggestions gratefully recceived.

J

Question information

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Status:
Solved
For:
Ubuntu update-manager Edit question
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Solved by:
actionparsnip
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Revision history for this message
Best actionparsnip (andrew-woodhead666) said :
#1

If you run:

gksudo gedit /etc/apt/sources.list

comment out the top few lines, these relate to the install CD which is causing the issue. Save the new file, close gedit then run:

sudo apt-get update

And it should be smooth

Revision history for this message
John MacMenigall (fred575) said :
#2

Many thanks, problem fixed, the only question now is why it happened in the first place . . .

Revision history for this message
actionparsnip (andrew-woodhead666) said :
#3

The CD can be used as a source of applications. You have yours enabled but the CD is not in the system so it is unavailable and causes the issue