Advanced Packaging Tool, the package manager for Debian-based distributions. It is also the most used tool for installing packages in Ubuntu. Questions about using any of the apt tools should use this tag.

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Adding repositories behind proxy, receiving error message “gpg: keyserver timeout recieve failed”

I'm connected through a network proxy, and not able to add any repositories because of following error message: gpg: keyserver timeout recieve failed How can I fix this issue?
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19 views

'apt-get upgrade' vs 'apt-get install --only-upgrade'

To this day I thought that using 'apt-get upgrade' keeps all my installed packaged to their latest version. Toady however, I realized that my 'deluged' package version is 1.3.6, while there's a newer ...
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1answer
14 views

What is dpkg-reconfigure and how is it different from dpkg --configure?

I was recently given an answer to another question Help: “aptd” is maxing out my CPU? which included running the commands sudo dpkg-reconfigure -phigh -a and sudo dpkg --configure -a That all ...
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Apt-cacher-ng “known data hit, don't write to”

I am using Ubuntu 12.04.1 LTS (Precise Pangolin). kernel version 3.10.39. I install apt-cacher-ng server with 0.7.2-1ubuntu2.1 version. With time, downloading of packages becomes extremely slow ...
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1answer
21 views

“apt-get update” gives many [Ign] errors - is that a problem?

I just ran sudo apt-get update once again and I thought that there are many lines starting with Ign instead of Hit in the output. I wondered what it means and researched on Ask Ubuntu and Super User, ...
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What should I do to install a ubuntu repository on a Mint? [on hold]

I know that maybe it's not a good idea, but I think it's worth trying. What shuld I do? > sudo add-apt-repository ppa:something/bla Traceback (most recent call > last): File ...
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OK 40th or so unbuntu install!! Why sudo apt-get install fail2ban not work? [on hold]

I've done this many times, sometimes i cannot install certain software from terminal for no reason? I wake up this morning try again and its working again? Maybe just the ubuntu server i suppose? I ...
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1answer
82 views

How can I be sure that I'm using NTP version 4.2.8p1 or equivalent?

I've recently read about the vulnerabilities within ntp, here which can be closed by installing ntp version 4.2.8p1. However, I've used apt-get to install the latest version of ntp, on an Ubuntu ...
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10 views

Openssl is not installing

I am trying to install Openssl in my Ubuntu 64bit os which is running in Virtual Box, But i am keep getting the following error. root@Ubuntu64Bit:~# sudo apt-get install openssl Reading package ...
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16 views

Updating hard limit of “maximum open files” of running process

I am trying to increase the "maximum open files" limit of my running process (apt-cacher-ng). I am following below link http://gregchapple.com/updating-ulimit-on-running-linux-process/ By following ...
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1answer
20 views

Android KitKat build on Ubuntu 14.04, Wrong JDK

I am trying to build Android-x86 KitKat branch from android-x86.org on an Ubuntu 14.04 64-bit machine. However, when I run make it doesn't run very long until there is an error which halts ...
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21 views

Why is my kernel not upgraded to the latest version? [duplicate]

My server runs Ubuntu 12.04.5 LTS. I try to keep it up to date as possible by doing sudo apt-get update && sudo apt-get upgrade regularly. So far I was assuming that this would update the ...
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7 views

Backup and Restore list of installed packages and APT sources

I commonly reinstall Ubuntu and back up my APT stuff [sources, keys and installed package lists] using the tutorial at http://askubuntu.com/a/99151/371765. However I commonly also remove software such ...
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1answer
15 views

after chroot: apt-get update (Err and Failed to fetch - BootableFlashFromHarddiskInstall)

I'm following BootableFlashFromHarddiskInstall tutorial for making a live CD from my current Ubuntu installation. Ubuntu 14.04 on VirtualBox. I checked internet connection of virtual machine as ...
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1answer
11 views

Can't connect to ubuntu keyserver when guest in virtualbox

I'm trying to install an application on an Ubuntu 10.04 via a ppa. This setup is necessary since a customer's error seems to be platform dependent. Here's what sudo add-apt-repository ppa:user/app ...
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2answers
49 views

Apt-get update fails ubuntu 14.04

I im trying to do sudo apt-get update but i get the following error: W: Failed to fetch http://ftp.udc.es/ubuntu/dists/trusty/Release Unable to find expected entry 'main/binary-x8-64/Packages' ...
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2answers
30 views

Unable to download anything from apt-cacher-ng proxy

I have installed apt-cacher-ng on my server. There are about 10 clients which will use this proxy to download the packages. Things were working fine since many days, however, all of sudden I started ...
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1answer
24 views

aptitude tries to reinstall packages I remove with apt-get

I used apt-get a lot in the last time, so there seems something misconfigured in aptitude now: When I type just aptitude install It tries to install lots of packages that i formerly uninstalled ...
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1answer
27 views

Adding git repositories to python 3 interpreter

I am working with Ubuntu 14.4 Trusty Tahr LTS on EC2. I want to use the Python 3.4.0 interpreter which is installed by default. I want to be able to be able to add git repositories to be accessed by ...
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2answers
106 views

Why my kernel is not the latest for 14.04?

My kernel is currently Linux scv 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux But I know it should be 3.13.0-45-generic #74 Why is it not updated by ...
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1answer
46 views

Help: “aptd” is maxing out my CPU?

I am running Ubuntu 12.04 and have a "aptd" process running as root (which I understand is correct) but eating 95% CPU (which is definitely not right). As per one of the answers here How to stop ...
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13 views

Unable to update ubuntu 12.04: GPG error : the public key is not available: NO_PUBKEY 3EF2666A18CEC0F6

W: GPG error: http://download.opensuse.org Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3EF2666A18CEC0F6 W: Failed to fetch ...
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28 views

unable to install google chrome on ubuntu 12.04 [duplicate]

i am new on ubuntu and was trying to install dropbox from software center it took long and mean while my computer got powered off and the i restarted my pc and went to software center it showed the ...
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12 views

Reinstallation of ubuntu causes install option to disappear

I reinstall ubuntu on my machine which causes removal of install option in software center. There are tons of answers available regarding this, I have tried most of them but unable to solve my issue. ...
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9 views

On Ubuntu 13.04 cannot download openvpn [duplicate]

Need to download the openvpn client but get an error whether I try with synaptic manager or by the 'sudo apt-get install openvpn' from a terminal.... The error in the terminal is: E: Unable to locate ...
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22 views

Problems opening frescobaldi on Ubuntu 14.10

I had frescobaldi installed on my machine running Ubuntu 14,10. I wanted to upgrade to the currrent version of that program and attempted to do so using the source code on their website. Now when I ...
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10 views

A huge apt log file from failed upgrade - what went wrong & how do I fix it?

When attempting to upgrade from the 12.04 to a newer LTS it seemed to hang for ages (a good day or two) on "preparing for upgrade" and then the whole system started to suffer. Eventually I rebooted ...
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1answer
41 views

Software center crashes on Ubuntu 14.04

After I run the software center in terminal it says: bizara@BlackHole2:~$ software-center 2015-02-24 19:27:53,480 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' 2015-02-24 19:27:54,828 ...
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0answers
14 views

apt-get: How to remove stored action

Following apt-get purge gridengine-client gridengine-common gridengine-exec, aptitude search grideng shows: ong11:~# aptitude search grideng pi gridengine-client - Utilities for Grid Engine ...
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1answer
16 views

Apt-get update comes up with "Sources list couldn't be read

I tried to update the packages through the terminal and I get this error every time, david@david-Satellite-C55-B:~$ apt-get update E: Type ' Now the Software center doesn't work and I have a warning ...
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1answer
16 views

Can't understand difference between liblapack3 and liblapack3gf

I need to install the lapack library in an ubuntu computer for linking to a code I am developing. I have been told to apt-get install liblapack3, but the only one I found is liblapack3gf. My list of ...
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15 views

How Can Solve VLC Installation [duplicate]

I am Using Ubuntu 14.10! VLC is My Default media player! But all on a sudden I found that the player has been This error could be caused by required additional software packages which are missing or ...
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12 views

Xubuntu -f install problems seems to be causing many problems

When I try to do anything in terminal I get a with -f install. this pops up: $ apt-get -f install E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the ...
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1answer
37 views

sudo apt-get install php5-imagick gives “404 Not Found” error and “E: Failed to fetch …” [duplicate]

Running: sudo apt-get install php5-imagick failed, and produced output including this in the middle: Get:7 http://us.archive.ubuntu.com/ubuntu/ trusty/main libavahi-common3 amd64 0.6.31-4ubuntu1 ...
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0answers
141 views

How to fix unmet dependencies when upgrading? [duplicate]

I'm running Ubuntu 14.04.2. After installing some programs this weekend --and perhaps having been too incautious with ppa's and/or the apt-get autoremove option-- I seem to have unmet dependencies ...
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12 views

Is there a way to configure Ubuntu to auto-select doc and devel packages?

Quite often, software comes in multiple packages: The binary package, i.e. foo The documentation package, i.e. foo-doc The developer package, i.e. foo-devel (i.e. if foo is a library) For example, ...
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2answers
45 views

How do I install linux headers when I am getting a “has no installation candidate” error

Primary Problem I am unable to run any virtualization software. Namely Vmware or Virtualbox. Since both of them asks me to install (or produces some error which pints to ) installing build essentials ...
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1answer
32 views

cannot upgrade Kubuntu 14.10

I have Kubuntu 14.10 with Linux desktop001 3.16.0-30-generic #40-Ubuntu SMP Mon Jan 12 22:06:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux kernel and when I issue command for system upgrade: clear ...
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2answers
54 views

Error message + Ubuntu Software Center down

I'm new to Ubuntu, and despite all what I could read, I cannot find, or I'm just unable, to fix my problem. In the upper right corner of the screen I have a "stop" sign, that says: An error ...
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1answer
25 views

Does installing a deb file add to repository list? [duplicate]

For example I want to install Google Chrome via deb file. Will it be added to my repository list for apt-get update and apt-get upgrade? If not, how would I go about updating it and other software ...
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2answers
31 views

npm unresponsive after nodejs install on fresh Ubuntu 12.04.5

Here's where I'm at... I have an old chromebook that I put Ubuntu (and Xfce) on via crouton. After installing the chromium browser, I installed nodejs via apt-get. I found that when trying to install ...
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1answer
96 views

Packages are broken with unmet dependencies - cannot install fglrx

I'm new to Ubuntu and trying to survive, but, I can't figure this one out - hopefully it's easy! Ubuntu Software Center says: New software can't be installed, because there is a problem with the ...
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139 views

Unmet dependencies for libglew-dev

I'm getting the following error message when attempting to install libglew-dev, Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not ...
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3answers
60 views

Accidentally installed Lubuntu and want to revert to Ubuntu

I am using Ubuntu 14.04.1 which is a fresh install of about one month old. I was trying to get 5.1 surround audio to work so I followed the instructions here which suggested the following commands: ...
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1answer
36 views

apt-get update says I have not permission [duplicate]

lately whenever i try to update through the terminal I get this message E: could not open lock file /var/lib/apt/lists/lock - open (13: permission denied) E: unable to lock directory ...
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16 views

Error in Installing RevKit

@ubuntu:~$ sudo apt-get install build-essential cmake python-dev ipython python-qt4python-numpy Reading package lists...Done Building dependency tree Reading state information...Done Package ipython ...
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1answer
40 views

Can't install package bcmwl-kernel-source package [duplicate]

Need to get my wireless network adapter working on Ubuntu 14.1, but when trying to install the required package bcmwl-kernel-source, the "apt-get install bcmwl-kernel-source" installation command ...
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1answer
10 views

Install munin via apt, without apache

Is it possible to install Munin via apt without apache ? I'm using already nginx, and it makes for me no sense to run a second web server, even as proxy.
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11 views

Unknown / Unexpected /Unseen apt-get update error (Ubuntu 14.04)? [duplicate]

I am getting error while sudo apt-get update Could not open file /var/lib/dpkg/status open (2: No such file or directory) Can't call method "policy" on an undefined value at ...
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1answer
79 views

How to fix Ubuntu 14.04 update problem?

I am trying to update my Ubuntu 14.04 (64 bit) and the software updater shows this error: Check if you are using third party repositories. If so disable them, since they are a common source of ...