unmet dependencies linux

If you manually installed a package that had unmet dependencies, apt-get will install those dependencies, if possible, otherwise it may simply remove the package that you installed in order to resolve the problem. Package dependency errors are not always generic and depends on the package to be installed. Voted up for mention of Aptitude conflict resolver. In the twin paradox or twins paradox what do the clocks of the twin and the distant star he visits show when he's at the star? Here you can also add and remove PPAs. Since apt-get works alongside with dpkg, which means apt-get will obey dpkg function. This is probably the cleanest solution, and sometimes can be faster to do. Why does the capacitance value of an MLCC (capacitor) increase after heating? debian installation mail soft phone linuxbabe sous une complte solution server ring install It will refresh any official and third party repositories you have added to your system and pull a new list of packages. It is always a good idea to back up configuration files like /etc/apt/sources.list, so you can revert the changes if needed. To get around this, we have to install Synaptic package manager which is a frontend for apt. PPAs (Personal Package Archives) are third-party package repositories hosted on Launchpad, for packages not supported by official Ubuntu repository. Therefore you should always be careful when adding any random PPA to your system. when I tried to install some other package (for example. These are some methods that can be used to fix and prevent dependency errors in Ubuntu. It just makes me wish apt and or dpkg had better protections to make sure they didn't get into these stuck broken states, or were better at resolving them. However, download speed may be low depending on your location and proximity to the servers. This was a huge help for me fresh install of Lubuntu 12.04 and couldn't install basic things such as gvim (vim-gtk) or openssh-server.

This should be done to get fresh cache packages and newer updates. Before trying any new command or adding any new ppa try this. I know the top two answers overwhelm the others a bit, but I'm not sure changing the nature of the question is the right solution, especially since you nullify the other answers.

Occasionally, when I'm installing stuff, I get an error like the following: APT is a package management system for Debian and other Linux distributions based on it, such as Ubuntu. This article will list a few methods that can be used to prevent and fix these kinds of dependency errors. Very simply, packages are an alternative to downloading, building, and installing software from scratch. Not sure why this was downvoted. If you are still unable to install your package, consider downloading and using its binary, if available. I'm attempting to create a, Actually "the exact package name", while not relevant in your question, is extremely relevant to any individual's issue in this regard. If you see an output N not upgraded, where N is the number of packages that couldnt be upgraded, then you will need to remove them one by one. this link, while it does not explain dependencies, or their general concept, does show a quick tutorial of the interactive resolver: +1 aptitude just saved my bacon in the face of a GTK3 conflict. End of Life Notice: Ubuntu 21.10 (Impish Indri) reached End of Life on July How to run 'apt-get install' to install all dependencies? This seems to have been overlooked in the answers, most of which are quite good otherwise. To change the download server, launch the Software & Updates app from the app launcher. Y PPA Manager is an one stop shop for all of your PPA needs.

@jrg I already have that in my answer does every answer need to have the same thing? These interruptions are usually because of factors out of control of the apt package manager. Running the command below will fix package errors and dependency problems arising out of this issue. So use this command. Note: PPA Purge doesn't remove PPAs (may be in future), So you'll have to manually remove the PPA. See. Apts package cache can be cleared by running the command below: There is another apt command autoclean that clears package cache. Upgrading installed packages can fix dependency errors. What worked for me is to re-install the dependency. 6. The best way to do this is to run PPA-Purge command explained above. how to Get All tokens against a specific Walllet Addresse? If the output states that nothing new was installed or upgraded, it has failed. Ubuntu automatically notifies when updates are available, you can also check for available updates by clicking on Session Indicator in Unity panel: Or, Hit Alt+Ctrl+T to open terminal and run following commands: Update: Synchronizes your list of available packages with the servers in source repositories. Now try installing your package with the following command, where PACKAGE is the name of package you want to install. You wanted to install package1, which needs package2 to be >= 1.8, but package2 in version >=1.8 requires package3 to be in version >= 6.7 and you have package3 version 6.3. Replace ppa_name/ppa with the name of your PPA. Then finally, call the apt-get install: This rarely happened during my long years of linux use, but I found myself using this approach seldomly and succeeded. @Ashu I'm trying to help people to make a canonical answer - and I have to tell, I agree that it may be one of the possible cause. Then reinstall any needed packages. In this article, we will look at how to resolve unmet dependencies in Ubuntu. I finally resolved this issue by descending into the dependency tree via apt-get install, illustrated with an example below. They offer a host of advantages in terms of installation, removal, monitoring, and handling interactions between pieces of software over the standard "build from source" model. If you have other incompatible packages and you do this, you will get a list of similar error messages for all the other packages that prevent the installation of package2>=1.8. However, you can manually change the mirror location to fix this issue. Package dependency errors can occur in Ubuntu after installing some apps. I'm leaving it for now since I don't have a better answer but it is something to think about. For the most part, APT is easy to use for installing, removing, and updating packages. There is NO single right answer for this question and there is NO simple answer. Sometimes packages are held because they have unmet dependencies. Aptitude is newer than apt package manager and it provides extra options, a terminal based frontend and general ease of use. Connect and share knowledge within a single location that is structured and easy to search. Top notch answer! How to Copy Files from One Directory to Another in Linux, How to Copy File to Multiple Directories in Linux, How to Use Variable As Key in JavaScript Object, How to Access Iframe Content With JavaScript, How to Convert Form Data to JSON in JavaScript. For most cases,installing the package through aptitude will resolve unmet dependencies.By default aptitude package was not installed on your pc.So first install it by running. So use this command, Y-PPA Manager is a gui app that helps you manage PPA's and various problems assosiated with it, Considering the question, apt is broken so, use these command instead, Double click on advanced, and you'll get this window, It is better to prevent than to search for this question on AskUbuntu :D, So, here are the guidelines to keep you safe, always run the following command regularly, or, you can always use Update Manager with this command, Only use PPA's meant to be used on Ubuntu also, only use PPA's with trusted sources. With the above example, you should be able to find a page like this, and then use a PPA, or install a .deb for 32bit, or a .deb for 64bit. However, most of these dependency errors can be minimized by installing apps from official, reputed and trusted sources. This may not however, prevent any dependency errors during upgrade. Aptitude is an alternative to apt-get which fixes unmet dependencies automatically, sometimes. 3. The best answers are voted up and rise to the top. package1 : Depends: package2 (>= 1.8) but 1.7.5-1ubuntu1 is to be installed. Remove duplicate PPAs. To solve the problem you have three options: disable, purge (revert back to original package in Ubuntu repositories) or remove PPA. To remove a PPA using command line, run the command below in the following format: For example, Geany text editor PPA added from here can be removed by running the command: To remove a PPA using GUI method, usually you have to launch the Software & Updates app from the app launcher. To disable a PPA: Open Software Center > Edit > Software Sources Or. Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's important to try making sure your package lists are up to date first; always make sure a simple update or clearing of the cache doesn't resolve the issue before digging deeper. ->. If 'sudo apt-get install apache2' failed, try 'sudo apt-get install apache2 apache2.2-common'. Alternatively you can use Y PPA Manager to disable/remove/purge PPA's (Details at the end of answer). This error occurs if you install package using apt-get command and it is unable to find/install some of the upstream packages required for successful installation. So the best thing is unhold them and delete them. If you want to know how to build a package from source, check other questions/answers or post a new one. Under Ubuntu Software tab, enable all the repositories. Existence of a negative eigenvalues for a certain symmetric matrix, Story: man purchases plantation on planet, finds 'unstoppable' infestation, uses science, electrolyses water for oxygen, 1970s-1980s, Solving hyperbolic equation with parallelization in python by elucidating Mathematica algorithm. type ctrl+alt+t to open terminal and type sudo apt-get install -f and follow the onscreen instructions, If still error occurs, Feel free to to ask it in askbuntu. Hit Alt+F2, type software-properties-gtk and hit Enter. Install it with the following command. Decisions made by users during installation or system level problems out of control of users can lead to broken packages. Atleast one of these methods should work for you, 1. Here's my advice. Note: All commands asked to be run must be run in the terminal, which can be opened by either Ctrl+Alt+T or searching for terminal in the dash. 465). It will probably give some suggestions about removing and installing packages, do what seems reasonable. Only add a PPA if you trust its source and maintainers / developers. When it says that it is not possible (and issues a message like in the question), then you should trust it. The reason for this may be that the later versions of package2 where built by some newer technology that is not supported by other packages that you already have installed. Save it in another partition or a safe place. Noone actually answered how to install those packages with unmet dependencies versions. Things tend to break, especially when using Ubuntu as your main development environment with tons of third party apps and command line tools. How to Execute Shell Script from PythonHow to Copy Files from One Directory to Another in LinuxGrep : Exclude Files & DirectoriesHow to Install Fail2ban in CentOS 7How to Copy File to Multiple Directories in Linux, Your email address will not be published. Package manager has a bug in the dependency resolution code. apache2.2-common comes from error log of previous step.

or something like this (with the relevant packages): But if you end up with this sort of error: You can then search for ways to install them here or here. Additionally not noted is that in many, if not most cases, " is to be installed" really means " is installed". Next time you need to reinstall a package that has been already cached, Ubuntu will get the deb package from cache folder instead of re-downloading it from server. But today my case seems different from yours. Is there an apt --force-overwrite option? Disabling a PPA means no more updates for the packages installed from that PPA. This also happens if you before added an external ppa for the broken dependency.Try removing that ppa by, purging a ppa (this removes the installed files also). Now let us look at the different ways to fix this problem. It only takes a minute to sign up. At last I found there's a dependency chain like this: For the first 3 packages, apt-get log told me ' is not going to be installed', but for the last package, it shows 'libaprutil1-ldap : Depends: libaprutil1 (= 1.3.9+dfsg-3build1) but 1.3.9+dfsg-3ubuntu0.10.10.1 is to be installed'. For instance, if you accidentally closed the terminal or your PC turns off suddenly, apt wont be able to finish setup. It is possible to have broken packages and unmet dependencies, especially when you are installing multiple packages at once. If you decide to add other repositories to sources.list, make sure that the repository is meant to work (and known to work) with Ubuntu. I have a different version existing in my lib, so: On Ubuntu packages are the primary way that software is built, deployed, and installed. Apt will attempt to correct broken dependencies. The second command removes packages you can no longer download and are outdated. If 'ppa-purge' command fails for some reason, you can't run 'ppa-purge' again unless you re-enable the PPA (To enable the PPA follow the same steps as disabling a PPA and Check the both lines of a particular PPA to enable it). Sometimes the layers of dependencies can seem overwhelming, but the concept is simple and key to understanding how software is installed/uninstalled in an Ubuntu system. Note that the methods suggested below are not in any order. Always add the stable version of a repository/PPA. There are many scenarios why this can happen and one has to investigate all options and try to solve the preconditions that lead to this error. :). rev2022.7.21.42635. This doesn't solve the problem if you don't have the mentioned packages installed. The repositories do include package2 in a version >= 1.8 but the package manager still wants to install an older version (1.7.5). There are two commands available to upgrade Ubuntu packages, both having different behaviors: The commands to upgrade and dist-upgrade respectively are: Ubuntus package manager apt keeps downloaded packages in a cache folder. For example package maintainers could have been wrong and did not check that package1 would work even with version of package2 < 1.8 and in the specification they set wrong dependencies. If following all the steps given to fix the error does not work for you, you can always ask on Ask Ubuntu, Here are some commands which you need to post the output of. Required fields are marked *. Using PPA-Purge will resolve any dependency conflicts arising from packages installed or upgraded from the PPA. Ubuntu and Canonical are registered trademarks of Canonical Ltd. Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Forget the exact package name. sudo apt-get install -f, 5.Purge the recently added ppa using ppa-purge If you're trying to install a package which depends on many i386 packages, the above stated dependency error also would be caused if you fail to add i386 architecture by running sudo dpkg --add-architecure i386 command. "': apt-get autoclean is the key in this solution. return your system to normal after testing a new version from a PPA. 4. Clearing this cache clears up disk space and also helps in fixing dependency and installation errors in some cases. To remove a PPA and installed packages run the following commands: (Ignore the first command if you don't want to remove the installed packages). There are also other files/commands that you need the output of that might be error specific, and users will probably prompt you in the comments to post the file/command. Be sure to use the --dry-run option, so that you are fully informed of consequences: Since removing the package you are trying to install may not be ideal, you might also try finding a repository that has the packages you need to satisfy the dependencies. After following this guide, I found that somehow in software-properties-gtk, the box for the 'main' repos had been unchecked! Announcing the Stacks Editor Beta release! Click on the Remove button at the bottom to remove the PPA from system. Linux Hint LLC, [emailprotected] In my case, I wanted to install libmagickwand-dev: So, I ran apt-get install for one of the failing dependencies: Fore some strange reason, this succeeded, and I was able to install the original package I wanted with apt-get install libmagickwand-dev: Excellent answers! I highly recommend aptitude to anyone using a .deb based system, such as Debian, Kali, Ubuntu or any of its derivatives. Oh, and where's my troubleshooting question? Sometimes you get The following packages have unmet dependencies error during installation or upgrade of a particular package in Ubuntu. You can lock yourself out of the system, block critical services etc.

In the Ubuntu Software tab, selecting Main server in Download from dropdown list is almost guaranteed to fix any package availability issues. Privacy Policy and Terms of Use. 7 Also make sure you have all the official repositories enabled (In Software Sources). The first command cleans local repositories, except lock files from /var/cache/apt/archives, and /var/cache/apt/archives/partial/. Reinstalling ubuntu-desktop package will pull in essential packages that were installed by default in Ubuntu. Aptitude can be installed by running command below: Aptitude and apt share a lot of command line options with aptitude having a few differences. Is the fact that ZFC implies that 1+1=2 an absolute truth? Additionally not noted is that in many, if not most cases, " is to be installed" really means " is installed" and should be tried to be removed if nothing else works (as in point 5). And then try to install package1. For instance, using aptitude package manager to remove even a single package will get you an option to remove unused and leftover packages, while there is a separate command in apt to do the same. Click on Settings > Repositories. Before you proceed, please take a backup of configuration files /etc/apt/sources.list and /var/lib/dpkg/status files with the following commands. Ubuntu uses centralized packaging system ,Ie Every package is depends to some other packages .When we installs a package it's dependencies will be installed ,The unmet dependencies error occurs when the the dependencies of the package is not available for installation, Make sure that all the default repositories are enabled, ->You can easily add them in the Software Center->Edit->Software Sources->Other Sources->Add". It is irrelevant to this question. You can't downgrade the whole system to the lower version numbers and can't install something from a standard repo cause the package from std repo has conflicts with the PPA package installed. Problem solved! With this option you can keep what you built in a separate directory and out of the system path so that it will not create conflicts with the system. The steps to install it are given above. If you see words like unmet dependencies, broken packages, packages have been kept back in terminal output, chances are that you may have dependency conflicts. Please do not enable the Proposed Updates as they are meant for testing/developers. When asking for help on Askubuntu or any other help forum, you should include the output of the following commands in your question: This will show the list of PPAs (If any): Y PPA Manager: It is possible to simulate the installation of a package to check any potential errors occurring during real installation.

Try this command to find and repair the conflicts: If it cannot fix the conflicts, it will exit with: 0 upgraded, 0 newly installed, 0 to remove and 6 not upgraded. My way is add the depended package into install list. (Synaptic is also available in Ubuntu.). It is the case where the installed version is more recent than the latest (what synaptic shows). yes,in most cases it resolves the dependencies. EDITED: using sudo dpkg -r [package] is encouraged as it has pretty powerful removal function. You call apt-get to purge the failed package you were trying to install in the system, and then you call build-dep command, which apt-get will grab and install dependencies individually belonging to this package, so that way they'll satisfy the package prior. No matter the reasons for the problem, you can always setup for manual compilation and build the needed package and all of it's dependencies in the exact needed versions from source. Usually the best 1st step to resolving this is to identify the source of pkg1 & pkg2. In order for your installation to be completed, package1 needs package2. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. BTW, you have a typo in --add-architecture, and you should add a reminder to run apt-get upgrade after --add-architecture. Keep Ubuntu Up to date. Aptitude combines a lot of apt options in a single command so that you dont have to run multiple commands to fix errors. Running the update command from terminal bypasses phased rollout of official Ubuntu packages through the GUI updater, so you always get the latest list of packages. You can also remove PPA repositories only. To install PPA Purge run the following command: But, considering the question apt is broken, the above command will fail.