Refering to editing the software sources in Ubuntu. Can be done graphically through System Settings > Software Sources or from the command line using APT.

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54
votes
23answers
94k views

How to fix Duplicate sources.list entry?

I keep getting this warning whenever I try to run sudo apt-get update. W: Duplicate sources.list entry http://archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages ...
26
votes
6answers
22k views

How do I enable the “partner” repository?

I keep seeing places refer to the "partner" repository as a place I can get software, how can I enable this repository? Please specify how to do this graphically and via command line.
25
votes
4answers
124k views

How do I enable the “Universe” repository?

How do I get to Universe Repository of Ubuntu software as mentioned in Ubuntu 12.04 LTS? I am installing 12.04 Ubuntu. Please help.
19
votes
3answers
4k views

What is the “proposed” repository?

What exactly does this repository contain and why should a user either stay away from it, or add the repository?
19
votes
3answers
13k views

How do I fix this “E:Type '*' is not known on line * in source list …” update error?

Every once in a while I see users having issues to update due to errors like this: E:Type 'ain' is not known on line 1 in source list /etc/apt/sources.list.d/some-ppa.list' with varying types/line ...
18
votes
1answer
36k views

How do I change mirrors in Ubuntu Server from regional to main?

I have a Lucid Server (10.04) set up and I would like to change the mirror from US (or any other country) to the Main Ubuntu Mirror. For example my two first entries in sources.list are: deb ...
17
votes
1answer
4k views

How do I enable the “extras” repository?

I keep reading about an extras repository for Ubuntu with new software that comes out independently of the distro release. How do I enable it?
15
votes
3answers
27k views

How to remove a repository?

Please let me know how to remove certain repositories in Ubuntu 11.04. I am getting the following errors while updating. sudo apt-get update Err http://ppa.launchpad.net natty/main Sources ...
15
votes
2answers
26k views

How do I enable the “backports” repository?

How to enable the backports repository so I can get newer versions of software?
13
votes
3answers
46k views

How do I enable the “multiverse” repository?

I keep seeing places refer to the "multiverse" repository as a place I can get software, how can I enable this repository? Please specify how to do this graphically and via command line.
13
votes
1answer
7k views

Assign highest priority to my local repository

Summary How can I make apt-get prefer local repository packages instead of downloading again the same package version from official repositories? The local repository is signed and trusted. We've ...
12
votes
3answers
33k views

How do I enable the “Universe” repository from the command line?

How do you use terminal to enable Universe source? Or any those 4 from Software Sources: Main, Universe, Restricted, Multiverse Main is on by default and Restricted is on if durring Ubuntu ...
11
votes
3answers
6k views

How do I add a software source?

Sometimes I see sites offering Ubuntu packages via something like Add this line to your software sources: deb http:// something something How can I add these to my package manager so I can ...
11
votes
3answers
18k views

Do files at /etc/apt/sources.list.d need to have an extension '.list'?

In /etc/apt/sources.list.d I have several files for custom repositories. All the names of those files end with .list. Is it obligatory that files in that folder should end with that extension? If ...
11
votes
2answers
108k views

“Unable to locate package” errors for all software

My apt-get doesn't install any programs. I try to install programs with apt-get install but always it shows same error: unable to locate package. For example I try to install the xbmc media center; ...
11
votes
2answers
2k views

Why is synaptic downloading packages for both amd64 and i386?

I'm running Oneiric 64-bit, and since I've upgraded I notice Synaptic has split the repositories into 64-bit and 32-bit, but it's downloading archive lists for both of them, taking twice the time as ...
11
votes
0answers
19k views

How to fix “Duplicate sources.list entry” warning? [duplicate]

Every time I try to do some update (sudo apt-get update) it says: Reading package lists ... ready W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ need /partner amd64 Packages ...
10
votes
6answers
40k views

How do I add a line to my /etc/apt/sources.list?

I am updating my Tor on Ubuntu and it states: Do not use the packages in Ubuntu's universe. You'll need to set up our package repository before you can fetch Tor. It then states that I have to ...
10
votes
2answers
19k views

Software Sources not found in Unity Dash Search

After upgrading to 12.04 from 11.10, I am no longer able to find Software Sources in Dash. I have installed software-properties-gtk, and can open via terminal, but cannot get Dash to find it? Is this ...
10
votes
2answers
5k views

What kind of content is in the Canonical Partners repository? Is it as secure & safe as the Main repo?

In Software Sources under the Other Software tab, there is an option of enabling "Canonical Partners" repository: software packaged by Canonical for their partners. Do I understand correctly that ...
9
votes
3answers
6k views

How to set up an apt-cacher server?

I have more than 500 systems running ubuntu 10.04, ubuntu 10.10 and ubuntu 11.04. It is difficult for us to install new packages to these machines from internet, because of the high bandwidth usage. I ...
9
votes
1answer
337 views

Why is the google PPA reenabled after an upgrade to a new release?

PPA's are normally disabled when you upgrade, and must be re-enabled manually. I upgraded to 12.04 about a month ago and I just noticed that while my other PPAs had all been disabled, the Google PPAs ...
9
votes
5answers
35k views

Solving the Ubuntu 12.04 Update Error: (-5 - No address associated with hostname)

Problem Description: Each time i try to download the updates for my operating system (Ubuntu 12.04) i get the following list of error messages: W:Failed to fetch ...
9
votes
0answers
10k views

How do I remove this duplicate sources.list entry? [duplicate]

Sometimes, when I run sudo apt-get update or install an app sudo apt-get install I get the error below at the bottom in the gnome-terminal and I can't remove it. I searched for it in the ...
8
votes
5answers
21k views

How to fix “-5 No address associated with hostname error” while updating?

I am getting this error frequently while updating Ubuntu 12.04 LTS. How can I fix it? Log is: Ign http://archive.scrapy.org precise/main Translation-en Fetched 6,620 kB in 1min 21s (81.2 kB/s) W: ...
8
votes
4answers
4k views

Where are the daily builds for Chromium for 12.04?

I am running now Ubuntu 12.04 Precise Pangolin but i still have today problem with this sources for chromium. Anyone have the Daily-Dev apt sources for chromium? Failed to fetch ...
8
votes
4answers
122k views

Apt-Get Update: failure to fetch; can't connect to any sources

I realize there are dozens of "apt-get update: failure to fetch" questions (I read through all I could find), but my present circumstance is unique to 12.04 and it affects all sources; not just ...
8
votes
3answers
3k views

What's the best way to re-enable ppa's/repos after an upgrade?

when I upgrade from 11.10 to 12.04 whats the best way to re-enable my ppa's and added repos?
8
votes
1answer
3k views

What does Ign mean in update manager? [duplicate]

When I run update from the terminal, I get the following list where many repositories are shown with "Ign". Does it mean the update manager will always ignore updates from those repositories? Apart ...
8
votes
2answers
2k views

Why are my apt-get update fetches so large? [duplicate]

Possible Duplicate: the size of apt-get update lists is too big After clean installing 12.04 (Release Candidate), and accepting all updates and upgrades till today, I find that sudo apt-get ...
7
votes
9answers
1k views

What are some “must have” Ubuntu programs? [closed]

What essential software do you have on a Ubuntu Desktop machine? One per answer please, and if you can, provide the official site link if they have it. Before adding an another answer, please search ...
7
votes
2answers
4k views

How do I change which mirror I get updates and software from?

How do I select which server Ubuntu will get it's software and updates from? I know how to find the list of mirrors on the web, but not how to use them.
7
votes
3answers
4k views

Is it possible to install ZSNES Emulator from default software sources?

I can find it listed when I search for "zsnes" in the Ubuntu Software Center but it doesn't have the "Install" button. If I click the "More information" button I'll get a "package not found" message. ...
7
votes
2answers
14k views

How do I restore the sources.list file?

I accidentally removed my /etc/apt/sources.list file. Is it hosted by Canonical somewhere so I can re-add it to the system? It's a bit of an emergency, so I hope someone can provide a quick answer.
7
votes
1answer
4k views

How to safely download and gpg verify a Debian source package?

I need specific (source or binary) packages from Debian. Can I download the package using apt-get? How can I add the Debian repository to my sources.list so it only gets used on a by case base? ...
7
votes
2answers
636 views

Why aren't my PPA's showing up in the Ubuntu Software Center?

When I add a PPA via Software Sources it normally would show up in the Ubuntu Software Center shortly after. But lately it seems that any PPA I add either won't show up, or takes days to. Does anyone ...
7
votes
2answers
1k views

apt method to get the latest nvidia driver

The nvidia driver that I got from Ubuntu repository is 260.19.06 . I was having some problems with videos, so I checked the nvidia site, and the version available there was 260.19.44. Is there a way ...
7
votes
0answers
636 views

How bad are duplicate entries in sources.list? [duplicate]

What is sources.list? Is it like 'registry?' How important is it it to keep it 'clean?' When I did sudo apt-get update the last lines to display were these: W: Duplicate sources.list entry ...
7
votes
0answers
6k views

Duplicate sources.list entry but cannot find the duplicates? [duplicate]

I'm running 12.04 64bit, and every time I update using the command land, I always get W: Duplicate sources.list entry http://gb.archive.ubuntu.com/ubuntu/ precise/restricted amd64 Packages ...
7
votes
0answers
5k views

Updates don't install because of “untrusted packages” [duplicate]

Possible Duplicate: Update Error : Require Installation Of Untrusted Packages I have "darktable + extras" installed (I added their ppa repository to the sources manually). The extras ...
6
votes
4answers
44k views

'Some index files failed to download' while updating

When running sudo apt-get update I get these following errors: Err archive.ubuntu.com quantal InRelease Err archive.ubuntu.com quantal-updates InRelease Err archive.ubuntu.com quantal-backports ...
6
votes
1answer
293 views

How do I investigate/confirm the identity of a PPA maintainer (e.g., Chromium Team)?

The Chromium Stable PPA (as found here: ppa:chromium-daily/stable) is maintained by Chromium Team (https://launchpad.net/~chromium-team). I assume this is "Google's" Chromium developers? If so, I ...
6
votes
1answer
1k views

How do I update to the most recent version of KMyMoney?

I'm a relative newbie to Ubuntu (10.04). I'm converting from Windows to Ubuntu, and the last piece of the puzzle is installing a substitute for Microsoft Money; e.g. KmyMoney. I have installed ...
5
votes
4answers
65k views

A “failed to fetch” error occurs when apt-get update is run. How do I fix this?

Contrary to the note above, I haven't found the answer to my problem. I have read almost a dozen apt-get update questions, most from askubuntu.com, with "failed to fetch" errors and tried the ...
5
votes
2answers
4k views

Should a relatively conservative user untick “Unsupported updates (precise-backports)” in Software Sources?

I installed 12.04 RC a few days before the release date and it is now updated fully. It's working just fine and it is my OS for regular work. I have a question regarding "Software Sources". In the ...
5
votes
3answers
8k views

How to install rar (no installation candidate)?

I need the package rar. But I get this error whenever I try to install it: Reading package Lists... Done Building dependency tree Reading state information... Done Package rar ist not available, but ...
5
votes
2answers
577 views

Could I make Ubuntu a rolling distro?

From what I understand, Debian testing/unstable/experimental are rolling release, right? Since Ubuntu is based on Debian, could I the Debian testing repo to my software sources and make my Ubuntu a ...
5
votes
2answers
744 views

apt sources.list disabled on upgrade to 12.04

After a do-release-upgrade, I'm now running ubuntu 12.04 LTS, as indicated below > lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04 LTS Release: ...
5
votes
1answer
295 views

How to install software from source and tell the apt-get that I have installed the version?

For installing software from source: ./configure make sudo make install How to tell the apt-get that the software has been installed, so that sudo apt-get install someSoftware Will show that the ...
5
votes
1answer
2k views

How to fix “something wicked happened” in Software Center?

I have a fresh install of Ubuntu 12.04. Whenever I try to download a new app from the Ubuntu Software Center, it says: Requires unauthenticated packages It then gives me an option to "Repair". ...