Apt-get update error Linux Mint 17

Question

I've just changed my os to Linux Mint 17, but I'm having some trouble when I try to run

 sudo apt-get update

[EDIT] Now I have the following errors:

Err http://extra.linuxmint.com qiana InRelease

Err http://extra.linuxmint.com qiana Release.gpg
Unable to resolve 'extra.linuxmint.com' 

Err http://archive.canonical.com trusty InRelease                              
Err http://archive.canonical.com trusty Release.gpg                            
Unable to resolve 'archive.canonical.com'

W: Failed to fetch http://packages.linuxmint.com/dists/qiana/InRelease

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/trusty/InRelease

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/trusty/Release.gpg Unable to resolve 'archive.canonical.com'

W: Failed to fetch http://packages.linuxmint.com/dists/qiana/Release.gpg Unable to resolve 'packages.linuxmint.com'

W: Failed to download some index files. Been ignored, or old ones used instead.

On the files under /etc/apt/source.list.d/ i have: official-package-repositories.list: # Do not edit this file manually, use Software Sources instead.

deb http://packages.linuxmint.com qiana main upstream import  #id:linuxmint_main
deb http://extra.linuxmint.com qiana main #id:linuxmint_extra

deb http://archive.ubuntu.com/ubuntu trusty main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu trusty-updates main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://archive.canonical.com/ubuntu/ trusty partner

getdeb.list:

# deb http://archive.getdeb.net/ubuntu trusty-getdeb apps 

Solution

The answer is in the error message, but perhaps obscure. You are unable to resolve the various URLs listed. Probably because you have no Internet connection at all. Start with a ping to see if this is true:

ping kernel.org or any other well-known host like 8.8.8.8

If you get no ping, then try dhclient eth0 ( assuming you are connected to eth0 ) to get a fresh IP address.

If you get a ping, then ping the URLs and try to see whats wrong. Wget is also a good tool, but ping is simpler.

Comments

[ju.kreber]

Could you please provide your sources.list file under /etc/apt and/or the contents of the files under /etc/apt/sources.list.d?

[romaolucas]

I've just edited my post adding the info you asked

[romaolucas]

I'm getting a ping, except in the URLs that I have the errors.

[John P. Fisher]

The first 4 are good URLs, so that narrows it down to some sort of DNS problem. Try nslookup to see if you get some info. Try it with a public DNS server like 8.8.8.8. Check your host file to be sure its not overriding DNS.

[ju.kreber]

I don't think this is the problem. i checked the urls and e.g. archive.canonical.com/ubuntu/dists/trusty/InRelease just does not exist. everything with "inrelease" seems wrong, so the question is why the system tries to reach it. It's a bit confusing because archive.canonical.com/ubuntu/dists/trusty indeed does exist..

[John P. Fisher]

You have solved the problem. In your browser go to ~trusty you will see "Release" (hint: when solving apt-get problems you can always just use the browser to see the files) I don't know what Mint expects, you might look for some documentation. Then edit sources.list.