Ubuntu
apt package

unable to update packages

Asked by colin williams

this is the error I get when trying to update...........

W:GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5A9A06AEF9CB8DB0, W:GPG error: http://ppa.launchpad.net oneiric Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C2518248EEA14886, W:Failed to fetch cdrom://Ubuntu 11.04 _Natty Narwhal_ - Release i386 (20110427.1)/dists/natty/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 11.04 _Natty Narwhal_ - Release i386 (20110427.1)/dists/natty/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
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/precise-proposed/Release Unable to find expected entry 'universedeb/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file)
, W:Failed to fetch http://ppa.launchpad.net/pmjdebruijn/darktable-release/ubuntu/dists/YOUR_UBUNTU_VERSION_HERE/main/source/Sources 404 Not Found
, W:Failed to fetch http://ppa.launchpad.net/nikount/orta-desktop/ubuntu/dists/oneiric/main/source/Sources 404 Not Found
, W:Failed to fetch http://ppa.launchpad.net/nikount/orta-desktop/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found
, E:Some index files failed to download. They have been ignored, or old ones used instead.

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This question was originally filed as bug #1021476.

Revision history for this message
Daniel Letzeisen (dtl131) said : 		#1

This looks like a configuration issues with the user's apt sources rather than an actual bug with apt.

Revision history for this message
Daniel Letzeisen (dtl131) said : 		#2

Your sources are mixed between version of Ubuntu (natty, oneiric, precise). What version of Ubuntu are you running? Please post the contents of /etc/apt/sources.list
If you have any .list files in /etc/apt/sources.list.d, lease post their contents too.

Revision history for this message
colin williams (mtb-espana) said : 		#3

I'm sorry, I don't have much knowledge on how Linux works. I don't know how to get those contents for you. What command can I use in terminal? I am running 12.04, but the install was not smooth. I had quite a few crashes along the way. Maybe it would be best to get a CD and re-install?

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Launchpad Janitor (janitor) said : 		#4

This question was expired because it remained in the 'Needs information' state without activity for the last 15 days.

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kenorb (kenorb) said : 		#5

The same problem here.

$ sudo apt-get update
...
Reading package lists... Done
W: GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4F191A5A8844C542

Revision history for this message
kenorb (kenorb) said : 		#6

$ ll /etc/apt/sources.list.d
-rw-r--r-- 1 root root 134 Jul 24 11:27 xorg-edgers-ppa-precise.list
-rw-r--r-- 1 root root 134 Jul 24 11:27 xorg-edgers-ppa-precise.list.save

Revision history for this message
kenorb (kenorb) said : 		#7

Related:
http://askubuntu.com/questions/169349/how-to-fix-couldnt-connect-to-host-error-installing-unity-webapps
http://ubuntuforums.org/showthread.php?t=2017375
http://ubuntuforums.org/showthread.php?t=2032493

Possible solution:
http://askubuntu.com/questions/1877/what-is-the-easiest-way-to-resolve-apt-get-badsig-gpg-errors

Try the following command:
sudo apt-key adv --recv-keys --keyserver ppa.launchpad.net 5A9A06AEF9CB8DB0

Revision history for this message
molinie (erixbzh) said : 		#8

Hi,

I have exactly the same problem:
W: GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A777609328949509

I've done this:
Try the following command:
sudo apt-key adv --recv-keys --keyserver ppa.launchpad.net 5A9A06AEF9CB8DB0

And I still have the same problem.
don't know what to do really.

Thanks in advance for your help
Regards
Erix

Revision history for this message
Pedro Sardinha (sardinha-web) said : 		#9

Hi!

I solved using Y PPA (https://launchpad.net/y-ppa-manager).

Regards!