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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keyserver timed out with add-apt-repository

I cannot add-apt-repository because the Ubuntu keyserver times out: $ sudo add-apt-repository ppa:git-core/ppa -y gpg: keyring `/tmp/tmpxzw15cei/secring.gpg' created gpg: keyring ...
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1answer
16 views

Cannot reinstall python3 on ubuntu 14.04

I think that I accidentally broke Python3 and was unable to do anything. I read somewhere that the solution was to remove python3 and reinstall it, but I got yet another problem: I was able to remove ...
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38 views

Ubuntu 16.04 Failed to download repository information: google music manager [duplicate]

When I try to check updates I get the following; W:http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg: Signature by key 4CCA1EAF950CEE4AB83976DCA040830F7FAC5991 uses weak digest algorithm ...
2
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2answers
72 views

How to repair corrupt package installation (mysql)

After upgrading to Ubuntu 16.04, I noticed mysql was having mind-boggling errors. Convinced, it was a broken setup, I tried running a purge of mysql. That didn't seem to delete everything, so I tried ...
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1answer
50 views

Cannot install ubuntu 14.04 packages

I have tried to install network-manager because after 13.05.2016 updates broke it. Anyway, there is few issues. I have downloaded from another computer network-manager ...
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0answers
17 views

Upgrade from from 15.04 to 15.10 (and possibly to 16.04)

I am not able to upgrade from 15.04 to 15.10 (notwithstanding I read analogues answers). 1st: with lsb-release -a I get No LSB modules are available. Distributor ID: Ubuntu Description: ...
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1answer
58 views

Offline install of packages

How I could download these packages: libmm-glib0 dnsmasq-base iputils-arping My ubuntu machine haven't internet connection since 13.05.2016 updates. So I have tried find a solution how to download ...
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2answers
29 views

Remove Getdeb from Ubuntu System

I tried deleting it from /etc/apt/sources and /etc/apt/sources.d, but whenever I run apt-get install for any package , it gives the following output in the end Setting up getdeb-repository ...
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0answers
18 views

Understanding section of “upstream_version” [duplicate]

When looking at the latest updates published by a package maintainer I noticed that there was a recent update to a package despite the minor version not incrementing: ...
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0answers
22 views

Error on installing applications

E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem. E: _cache->open() failed, please report. When I run dpkg in the terminal, I get the following ...
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1answer
55 views

Ubuntu 14.04. cannot update [closed]

Similar to this question, I cannot apt-get update my machine. I've tried everything I could Google: adding the bad key, deleting my /var/lists/thingy, apt-get clean, deleting Chrome. But I keep ...
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0answers
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How can I know when update is avaible?

You wrote : Once the future upgrade from trusty-proposed is installed you can remove that hold with: sudo apt-mark unhold libnl-3-200 libnl-genl-3-200 libnl-route-3-200 But how can I guess the ...
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1answer
41 views

fixing broken packages in ubuntu : repost

I have a lot of broken packages in my ubuntu 14.04 distro, which I am trying to fix. I am following this answer by one of our community member. I followed the first two commands and after editing the ...
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1answer
26 views

sudo apt-get update error: Wrong sources.list entry or malformed file

I recently tried to install npm and nodejs and got some errors and was suggested to run sudo apt-get update. After running sudo apt-get update I get the following error: Failed to fetch ...
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0answers
23 views

Missing locales, running in low graphics, can't apt-get

When I try to apt-get upgrade I get error with dependencies and it tells me to use apt-get -f install, but when try it perl warning setting locale failed... The problem started when I used katoolin ...
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0answers
40 views

apt-get update, unlinking

I've recently moved to xenial ubuntu. After upgrading, I was no more able to run sudo apt-get update The output is the following: Get:1 http://it.archive.ubuntu.com/ubuntu xenial InRelease [247 ...
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0answers
46 views

Windows 10 UBUNTU bash

I am having multiple problems getting UBUNTU to work properly.. I am getting pages of errors after running apt-get install -f the errors end with: 6b39-1.13.11-0ubuntu0.14.04.1); however: Package ...
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2answers
45 views

Unable to install libmotif4

While installing dependencies for Oracle 11g setup on Ubuntu, I got the following error: Package libmotif4 is not available, but is referred to by another package. This may mean that the package is ...
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0answers
10 views

Can I configure unattended-upgrades to reboot only for urgent issues?

This is how to configure unattended-upgrades to reboot the machine if needed: Unattended-Upgrade::Automatic-Reboot "true"; (in /etc/apt/apt.conf.d/50unattended-upgrades ) But is there no way to ...
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1answer
24 views

I am trying to use kivy on python with Pycharm

https://github.com/kivy/kivy/wiki/Setting-Up-Kivy-with-various-popular-IDE's I am following the instructions on this website. I install the linuxbrew and I pass the first and second part. brew ...
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0answers
46 views

nvidia-current vs ubuntu-drivers for graphics card?

The Problem: I recently installed Ubuntu and I realized I'm probably not using the Nvidia drivers. I found that I could get the right driver via "Software and Updates," but wanted to learn how to do ...
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1answer
28 views

PHP not running on Apache ARM

I have installed ubuntu on a Beaglebone black. apache2 -v Server version: Apache/2.4.18 (Ubuntu) Server built: 2016-04-15T18:00:57 php -v PHP 7.0.4-7ubuntu2 (cli) ( NTS ) Copyright ...
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0answers
97 views

GRUB shows kernels from previous ubuntu version

I have just updated Ubuntu to 16.04 version and when I boot, grub shows the kernels from the previous Ubuntu version. How can I delete them? (not only in the grub list but to actually free that space ...
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2answers
35 views

unable to install youtube-dl

Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: youtube-dl 0 upgraded, 1 newly installed, 0 to remove ...
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1answer
109 views

Apt-get not working after attempting to install kde desktop [duplicate]

So, I tried to install the KDE Desktop in Ubuntu, but it failed (I couldn't grab output for here). Now whenever I try to use apt-get , it says that it fails, and to use sudo apt-get -f install . ...
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0answers
12 views

Hide hold back package from being listed in software updater and apt

I'm running 16.04 but downgraded the gedit package from 3.18.3 back to version 3.10.4 because of the new ugly and badly usable design, following this great answer by @Videonauth. His script installs ...
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0answers
126 views

permission error when installing ttf-mscorefonts-installer

I wanted to install the Microsoft fonts on 16.04 and ran the command below, but there are many errors (or only warnings?) about that the user _apt has no permissions on the downloaded .exe files. ...
0
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1answer
65 views

Problem installing package git-all

I am trying to install git-all using the following commands: sudo apt update sudo apt install git-all and I get the following results: jonathan@Aristotle:~$ sudo apt install git-all Reading ...
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2answers
27 views

Why 'apt-get install' acquires /var/cache/apt/archives/lock during download

The apt-get upgrade and apt-get install <packagename> commands acquire /var/cache/apt/archives/lock while both downloading and installing. I think it should be possible to download packages ...
0
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1answer
22 views

How to update a manually installed software package properly (here: Simplenote)?

I have installed Simplenote 1.0.0 for Ubuntu by downloading the .deb file and using the command line as explained here. As there is no ppa for this app, a notification now explains that I could update ...
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0answers
211 views

Ubuntu 16.04 apt-get update doesn't work with local repository

I have local repository of xenial in /CDs/ubuntu directory. My sources.list file: deb file:/CDs/ubuntu xenial main restricted universe multiverse Results of update: #apt-get update Get:1 ...
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2answers
192 views

Chrome - apt-get update Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/main/binary-amd64/Packages.bz2 Hash Sum mismatch

I'm running Chrome 50.0.2661.102 (64-bit) on Ubuntu 16.04 x64 and today sudo apt-get update failed with the following message: ... Err:28 http://dl.google.com/linux/chrome/deb stable/main amd64 ...
3
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0answers
397 views

Ubuntu 16.04 updating Google Chrome gets weak digest and hash sum mismatch messages

So for a while now whenever I run sudo apt-get update I have been getting some output regarding google-chrome similar to: W: http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg: Signature ...
2
votes
1answer
28 views

How to fully remove QEMU?

I have QEMU installed but as I don't really use it and it's recently had lots of security vulnerabilities discovered in it so I would like to fully remove it. I installed it with sudo apt-get install ...
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0answers
41 views

How to remove all garbage packages with aptitude

I am getting a big garbage package list obtained with the command: aptitude search ~g or aptitude search ?garbage (These commands Select packages that are not required by any manually ...
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1answer
64 views

Error : Running add-apt repository ppa:

I am using Ubuntu 16.04 and I'm running this command: sudo add-apt-repository ppa:paolorotolo/android-studio and I'm getting this error: I've even tried reinstalling ca-certificates, but after ...
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2answers
47 views

Install oracle-java7-installer showing error

I tried running the command in Ubuntu 16.04: sudo apt-get install oracle-java7-installer oracle-java7-set-default but it's showing an error: How can I install this package?
2
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1answer
35 views

How to install Estru3D - Structural Analysis Software?

I had problems installing Estru3D. It requires Gambas3 to be installed as a prerequisite. But it doesn't work with the newest Gambas3 installed in Ubuntu 16.04.
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is a file in /etc/network or in /etc/network-manager misconfigured?

Each time when I want to run sudo apt-get update then the system stucks and only following line appears : 0% [connection with dlink.com (12.130.207.110)] [connection with dlink.com:1024 ...
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0answers
16 views

During installing LAMMPS , when we reached at command- lammps-daily < in.lj bash: in.lj: No such file or directory meassage comes in terminal

During LAMPPS installation after following commands: sudo add-apt-repository ppa:gladky-anton/lammps sudo apt-get update sudo apt-get install lammps-daily when i run, lammps-daily < in.lj ...
2
votes
1answer
44 views

Can't purge old kernels (dependency problems), but /boot is out of space

I'm running Ubuntu 14.04.4 LTS, and I'm trying to install a new package using apt-get. Unfortunately, whenever I try I get messages like: The following packages have unmet dependencies: ...
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0answers
75 views

Can't update Ubuntu 14.04 LTS

Sorry, there are thousands of posts with apt-get problems due to old repos. But 14.04 LTS is supposed to be a long term support release. When we try to install anything, or run "apt-get update" we ...
1
vote
1answer
28 views

How to cleanup themes/icons that I messed up

I've been playing a bit too much with my custom themes/icons. I started by copying them from /usr/share/themes (/icons) to ~/.themes (.icons). Then afterwards decided to delete the original files to ...
0
votes
1answer
55 views

How to downgrade smbclient

I'm trying to downgrade smbclient as is no longer working with backuppc. I have followed the instructions in this post How to downgrade packages on Ubuntu? but it doesn't seem to work. I ran sudo ...
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0answers
105 views

Hash Sum Mismatch that won't go away

I am not a very advanced user of Ubuntu. So the question may sound a bit naive. I recently got a new laptop: HP Probook G3 440. I have tried installing many previous versions of Ubuntu. They run ...
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2answers
74 views

Gnome-shell can't install - broken packages [duplicate]

I am trying to install gnome-shell but it shows me an error: $ sudo apt-get install gnome-shell ... Some packages could not be installed. This may mean that you have requested an impossible ...
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2answers
529 views

Unable to install MariaDB on Ubuntu 16.04 - unmet dependency

Here are the steps sudo apt-get install software-properties-common sudo apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xF1656F24C74CD1D8 $ sudo add-apt-repository 'deb ...
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1answer
106 views

MySQL installation on Ubuntu 16.4: no root password prompt and no `mysql` folders created

My server hard disk crashed and unfortunately my MySQL backup (which occurs once a day) was missing some important data, but I have the files from the folder /var/lib/mysql. On my new installation on ...
3
votes
0answers
65 views

Xenial with 4.4 kernel still requiring reboots

I'm seeing a 16.04 system with a 4.4 kernel requiring reboots upon upgrading the kernel. I had thought that with the 4.x kernel no more reboots would be required due to the hot patching support that ...
3
votes
0answers
41 views

List all packages available (and/or installed) from a specific source

How can I list all package names and their versions available from a specific package source (official repositories, PPAs or other repositories) ? Also, how can I filter only the installed packages ...