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

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59
votes
4answers
273k 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.
22
votes
2answers
2k 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.
104
votes
3answers
102k 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 ...
38
votes
3answers
147k 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.
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? $ software-...
11
votes
3answers
16k 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 ...
18
votes
4answers
80k 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
4answers
90k 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 ...
29
votes
3answers
25k views

Problem with .deb packages on Ubuntu 16.04

This bug has now been fixed upstream. An update has been issued. If you still cannot install, ensure you have updated fully, and then restart your computer. I am trying to install downloaded DEB ...
30
votes
8answers
45k 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.
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 ...
62
votes
11answers
8k 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 ...
24
votes
9answers
40k 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 ...
15
votes
4answers
28k views

16.04 Cannot install anything from Ubuntu Software center [duplicate]

Whenever I double click a deb file, it'd be opened in software center. However, when I click "install" button, it'd change to "installing" for a second but then turn back to "install" and nothing ...
23
votes
6answers
47k 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. (org....
10
votes
7answers
26k 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. ...
7
votes
3answers
9k 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 ...
37
votes
4answers
10k 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 ...
21
votes
4answers
109k 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 ...
16
votes
9answers
151k 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 ...
19
votes
2answers
37k views

How do I enable the “backports” repository?

How to enable the backports repository so I can get newer versions of software?
5
votes
3answers
8k views

Why are there so many console messages from GTK+ applications?

I have tried to open Software Center using the command line software-center and it did worked. I mean, Software Center opened and works fine, BUT, at the same time, in the Terminal window I see a ...
2
votes
0answers
606 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 ...
1
vote
2answers
3k views

Finding Installed Software

Since I have not been able to open Dash Home in 12.04.4 see Dash Home will not open, I am hoping for a work-around. Is there another convenient way to open apps/programs without having to search ...
35
votes
7answers
7k 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 ...
31
votes
4answers
77k views

How to make ttf-mscorefonts-installer package download fonts, after it says it installed?

When I install "Installer for Microsoft TrueType core fonts" (ttf-mscorefonts-installer) from the Software Center on 14.04, it gives a positive response--but after this I get a download error. It ...
16
votes
3answers
308k 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 ...
4
votes
3answers
4k 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 (...
6
votes
1answer
8k views

How to reinstall many removed packages at once?

I used sudo apt-get remove python command and accidently removed a bunch of packages that were required. I logged in via command line and installed ubuntu-desktop again but there are other packages ...
9
votes
3answers
20k 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 ...
9
votes
8answers
20k views

The new software center in Ubuntu 16.04 shows no application data found

This is the error I get when I open the software center. I've tried rebooting and running sudo apt-get update but I see no improvement. It worked earlier but I don't know what went wrong since then. I'...
3
votes
2answers
18k views

How do I install the latest version of Matlab?

When I tried to install Matlab using the Software Center, it prompted me for the Location of MATLAB installation(s). Since I am trying to install it, I don't know what to do.
27
votes
2answers
6k 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 ....
27
votes
7answers
6k 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
4answers
11k 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. ...
2
votes
3answers
23k views

Access Windows 7 Files from Ubuntu 12.04

I'm new to Ubuntu, so can any of you give me a guide of how I can access my windows 7 files from my Ubuntu 12. I installed it using Wubi. Looked around everywhere but failed.
22
votes
3answers
2k 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
2answers
2k views

How to install software provided in software-center via terminal?

Can anyone help me providing terminal command to download and install the software provided by Software center? Actually I'm searching for command to download and install KDbg (Debugger) via terminal....
3
votes
2answers
12k views

Software Center not Opening at all Error

When I open software from menu, it says "cannot open software database. Please reinstall the software-center package. When I write software-center on terminal, such error comes: 2014-05-28 09:11:20,...
2
votes
3answers
11k views

How do I change Software Center's default installation path?

I'm using Ubuntu 10.10 - the Maverick Meerkat. Whenever I install software using the Software Center, it installs it to /usr/lib. I have less space in this drive. Is it possible to change the default ...
3
votes
6answers
10k 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 ...
3
votes
1answer
237 views

Does removing an application from Software Center do a remove or a purge

When I remove an application already installed through the Software Center. Does it remove the app the same way as doing a purge to it (aptitude purge) or does it remove it like a "remove" (aptitude ...
2
votes
1answer
314 views

Can't Install anytime in Ubuntu

I am trying to install java in ubuntu but it is giving me this error: somewhere@someome-OptiPlex-755:/$ sudo apt-get install default-jre Reading package lists... Done Building dependency tree ...
20
votes
4answers
62k 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 ...
32
votes
6answers
6k 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?
18
votes
1answer
773 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 ...
10
votes
3answers
65k views

APT way to get Adobe Flash Player latest version for Linux not working

I am running Ubuntu 14.10 and I am trying to get the latest version of Adobe Flash Player for Linux (which apparently is 11.2), I am selecting the option for APT for Ubuntu 10.04+ here: But when I ...
12
votes
1answer
773 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 ...
5
votes
5answers
14k 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 ...
9
votes
1answer
9k views

How to re-install Software Center? [duplicate]

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 ...