The Ubuntu Software Center gives you instant access to thousands of open-source and carefully selected free applications.

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21
votes
2answers
1k views

How do I install software using the Ubuntu Software Center?

The title says it all. I'd like to know how I can install software - an example is the Chromium web browser.
3
votes
0answers
2k views

Software center not opening [duplicate]

Possible Duplicate: Software Center empty “No usefulness from server” “no username in config file” I can't open the software center. Is there anything I can do to get it to start? $ ...
22
votes
4answers
99k 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.
11
votes
2answers
13k views

Fixing software center catalog

I'm new to Ubuntu, it looks like it is better than Windows. Last day I tried to install Kget (the download manager) but during the process my computer suddenly stopped working. So I had to switch it ...
71
votes
3answers
60k views

How do I deal with “unauthenticated sources” errors in the Software Center?

Any install that I'm trying through the Software Center is telling me: Requires installation of untrusted packages: The action would require the installation of packages from not authenticated ...
5
votes
0answers
6k views

How to fix 'Check your Internet connection' error in software center? [duplicate]

Possible Duplicate: Failed to download package files error I have a problem with the Software Center. I am not able to install anything from it. After I entered my authorisation password it ...
57
votes
11answers
7k views

Why can't I update applications without upgrading the whole OS?

In Ubuntu, once a release is out the software one has installed receives security updates only. In Windows, I can get new versions of programs with new features. How can Windows do this and why can't ...
6
votes
4answers
36k 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 ...
10
votes
2answers
31k 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.
7
votes
3answers
7k views

Cannot install any software from the Software Center due to ttf-mscorefonts-installer package error

When I try to install any software from ubuntu software center it comes with error: An unhandled error occured There seems to be a programming error in aptdaemon. This is the software that allows you ...
25
votes
6answers
18k 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.
7
votes
3answers
15k views

How to I fix software center after installing the Linux Mint MATE desktop?

I installed the MATE desktop using this manual but now i can't open my Ubuntu Software Center and can't open the settings from the update manager. I removed mate desktop but it doesn't fix the ...
2
votes
0answers
598 views

E: Malformed line 59 in source list /etc/apt/sources.list (dist parse) E: The list of sources could not be read [duplicate]

Possible Duplicate: How do I fix “malformed line” errors in sources.list? The software center wasn't working so I tried to uninstall and and reinstall and I got this message: E: Malformed ...
13
votes
9answers
18k views

Dropbox install stuck at 99%, how do I fix it? (and any dpkg errors)

I tried to install Dropbox using How to install Dropbox?, or with apt-get install nautilus-dropbox. Dropbox loads until 99% and then hangs, causing the system to go to 100% cpu usage. If I reboot or ...
12
votes
4answers
46k views

Can I uninstall and reinstall Ubuntu Software Center?

Since migrating to a true install and upgrading to 12.04 I have had several problems that seem to relate to the Ubuntu Software Center. Hanging at applying changes and blank screen on screen lock only ...
9
votes
7answers
13k views

How can I update Ubuntu offline without using Synaptic or Keryx?

I use Ubuntu 12.04 at my home and have good internet connection and my system works fine. One of my friend is having small office and he is thinking to switch from Windows to Ubuntu 11.10 or above. ...
30
votes
7answers
5k views

How to remove the “For Purchase” section from the Software Center?

The Software Center has a section of For Purchase programs —see screenshot below—, which is annonying me every time I want to install something. Is there any way to remove or hide these ...
32
votes
4answers
6k views

How can I set the Software Center to install software for non-root users?

How can I set the Software Center to allow non-root users to install stuff from the Ubuntu repos without having to type in their password? I'm fully aware of the security implications, and I am ...
11
votes
7answers
82k views

How to configure proxy authentication to work with Ubuntu Software Center?

I have tried put in apt config Acquire::http::proxy, and in Network>Network proxy with and without user:password@server:port and using environment variables http_proxy and https_proxy. Nothing seems ...
14
votes
2answers
23k views

How do I enable the “backports” repository?

How to enable the backports repository so I can get newer versions of software?
10
votes
3answers
9k views

“Software can't be installed or removed because the authentication service is not available. ”

I have 12.10 ubuntu and when I try to remove / install programs I get notification : Software can't be installed or removed because the authentication service is not available. ...
9
votes
3answers
32k views

How to resolve “Failed to download repository information”?

Whenever I try to install anything with the Ubuntu Software Center, the following error appears. Failed to download repository information Check your Internet connection. E:Unable to ...
9
votes
3answers
161k views

How to install Synaptic Package Manager?

I tried to install Synaptic Package Manager but I get the following error message: Package dependencies cannot be resolved. This error could be caused by required additional software packages which ...
20
votes
3answers
1k views

What is the process for getting paid apps into the Ubuntu Software Center?

What is the process for getting paid apps into the Ubuntu Software Center?
4
votes
4answers
4k views

No install button in software centre?

I can not install most of the software as not all of the software has a button to install. is this an error? or dependency problem if so how do i fix it?
25
votes
2answers
3k views

Should I install programs from a source tarball (`.tar.gz`), from the Ubuntu Software Centre, or from elsewhere?

There are several ways to install an application in Ubuntu: You can download a source tarball (generally a .tar.gz or a .tar.bz2 file) and install it manually. (See How to install a .tar.gz (or ...
9
votes
1answer
5k views

How to re-install Software Center?

I've had a problem with Software Center for a few weeks, where it has just refused to delete a removed PPA from its "All Software" and "Installed Software" drop-down menus. I've tried many suggested ...
24
votes
6answers
3k views

Why the software center doesn't allow multiple downloads?

I was wondering why the software center doesn't download all the requested apps and install one by one as they finish to download. Or instead why the software center doesn't download an app while the ...
4
votes
3answers
3k views

Software Center empty “No usefulness from server” “no username in config file”

I upgraded to 12.04 LTS and ran Software Center while a few things were running, and crashed. (2 GB RAM on a Netbook.) On reboot, Ubuntu One interface would not find any programs, neither installed ...
4
votes
4answers
9k views

Error with Update Manager and Software Center

I am running Ubuntu 11.10. On trying to check for updates using the Update Manager GUI, I encounter the following error: Failed to download repository information Check your Internet connection. ...
3
votes
3answers
12k views

Software Center Won't start [closed]

For a few days now, my Ubuntu Software Center won't start. Ubuntu One also won't connect (not sure if that's related). When I try launching Software Center from Dash, nothing happens. If I try ...
3
votes
6answers
6k views

Install button in the software center is grayed out when trying to install .debs without an internet connection [closed]

I just installed ubuntu 11.10 from a usb stick. After installation, none of the software which I had collected and run on 11.10 or 11.04 runs on it. Even my newly downloaded opera or chrome ...
2
votes
2answers
717 views

sudo apt-get update giving error about duplicate

Getting an error about duplicate sources, how can I get around this?
0
votes
4answers
10k views

How to resolve Unmet dependencies error? [duplicate]

Using my new install of Ubuntu I haven't been able to download anything from the software center except the maryo game without the following error: The following packages have unmet dependencies: ...
13
votes
4answers
32k views

How to list user installed applications (not packages)?

Not packages and not all applications. Just the applications user installed by himself from whatever source (Software Center, manually added PPA, etc.). If the above is not possible - a list of all ...
17
votes
3answers
2k views

How to remove the big banner from Software Center?

In the new version of Ubuntu Software Center there is a big banner under toolbar. It's useless for me. How do I remove it?
12
votes
1answer
516 views

Is there any web API for Software Center available?

I wonder if there is an API available for using contents from the Ubuntu Software Center on my webpage. I know The Ubuntu Apps Directory website contains an almost complete database of applications ...
9
votes
1answer
444 views

Why should I go through the purchasing process to install a product priced $0.00?

In Software Center, I have to run through the purchasing process even if a product is priced with 0$ (e.g. 'Full Circle Magazine'). That makes no sense to me. If the price of the product is 'zero', It ...
9
votes
3answers
15k views

Can't install/remove/upgrade any package

So I've been trying to upgrade Ubuntu 11.10 64-bit few days back and received an error: dpkg: ../../src/archives.c:978: tarobject: Assertion `r == stab.st_size' failed. So I followed this Ubuntu ...
4
votes
1answer
1k views

Software Center doesn't prompt for password

I'm using Ubuntu 10.10. The software center was asking me for password when I wanted to install/remove any application. Since last week, it doesn't prompt for password. Also, I have the same problem ...
3
votes
3answers
4k views

Software center has disappeared

I'm an absolute newby for Linux / Ubuntu. Yesterday I installed Ubuntu 11.10 on an old computer. It seemed to work fine. However today when I started the computer again the software center had ...
0
votes
3answers
889 views

How can I get root-like permissions so I can download stuff from the software center?

When downloading an application from the terminal it said I couldn't download it because I wasn't root, and when I got to search for the specific software in the Ubuntu software center it doesn't even ...
7
votes
1answer
3k views

How to delete History of installed packages

I need to delete the Synaptic/Software Center history(commit logs). How can I go about doing this?
4
votes
2answers
22k views

Changing Wallpaper on 12.04 Login Screen

I'm using this link but seems to be not working on 12.04, here's the Terminal message below: Are there other softwares/tips for changing the login screen? I'm also using link but seems outdated. ...
4
votes
1answer
2k views

Why does it always say “Requires Installation of Untrusted Packages” and not let me download?

As the Title above asks, Why can't I install any packages? I tried installing emesene (Other applications wont install either, just using emesene as an example) but It wont download due to "Untrusted ...
2
votes
2answers
2k views

having problems with update manager

I'm trying to update my Ubuntu system, but cannot do anything with the Update Manager. It loads up 3/4 of the way and then says: Could not initialize the package information An unresolvable problem ...
0
votes
1answer
2k views

Can't open Software Center due to a malformed line

When I try to open Software Center, the icon blinks, but nothing happens. When I type sudo software-center in my terminal I get: 2012-05-07 12:57:18,385 - softwarecenter.ui.gtk3.em - INFO - EM's: 17 ...
28
votes
6answers
3k views

How do I install an application by DEB file for a single user only?

When installing applications via the software center or by a DEB file they will usually be installed system wide for all users. Is there a way to install an application for a single user only?
14
votes
1answer
466 views

Is there a way to limit the bandwidth that Software Center uses?

Whenever I am downloading packages using Ubuntu Software Center (or any package manager for that matter), my Internet connection slows to an absolute crawl. In fact, most requests timeout. Is there a ...
28
votes
11answers
6k views

Are there alternatives to software center?

Are there any GUI alternatives to the Ubuntu Software Center with Fast application loading/Low startup time Fast search Low weight/size Application purchase facility