Ubuntu finds update but when I click on install update, it gives an error. I released that there are some people out there who's getting that message too, but mine is different and non of the solutions worked for me.   update-manager Requires installation of untrusted packages This requires installing packages from unauthenticated sources. libdrm-nouveau1a libdrm-radeon1
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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 sources.  I did an apt-get update from the command line, then removed the software sources that the keys were bad from (PPAs I added myself), and unchecked them in the software sources for software center, but to no avail.  I can't install anything from software center anymore - only&gt; from the command line with apt-get. Is uninstalling/installing the only option?  I don't want to break other PPAs that I have. Additional information: Here's a paste from apt-get update: Reading package lists... Done W: GPG error: http://ppa.launchpad.net oneiric Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B725097B3ACC3965 W: GPG error: http://us.archive.ubuntu.com oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key &lt;ftpmaster@ubuntu.com&gt;  I've tried apt-key update, and there was no effect (two keys unchanged). The output of apt-get update and apt-get upgrade, and the contents of /etc/apt/sources.list, can be found in .
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Just what the title says. The update manager is also asking me to update to Ubuntu 12.10 even when I have the part unchecked that says "Check for new Ubuntu version updates" thing. Is there some way to turn the annoying update manager off?
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The error I am having when trying to update my package list.  W: GPG error: http://download.opensuse.org ./ Release: The following signatures were invalid: KEYEXPIRED 1436387333  W: Failed to fetch http://ppa.launchpad.net/samrog131/ppa/ubuntu/dists/trusty/main/binary-amd64/Packages  404  Not Found  E: Some index files failed to download. They have been ignored, or old ones used instead.
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How can I safely upgrade an Ubuntu installation from one release to another? What should I do before upgrading to ensure it goes smoothly, and is there any clean-up I need to do afterwards?  In particular, do I need to do anything special if I am using packages from PPAs, if I have a graphics card that needs drivers, or if I'm running a custom Linux kernel?  This is a general question , but as example we take Ubuntu 12.04 and Ubuntu 12.10
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A new version of Ubuntu has been released. I still can't find it on ubuntu.com. Where can it be downloaded from, or is it the only way to install it using update-manager to upgrade an existing installation?
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(This question was not resolved. Due to time constraints Computer was restored to factory settings.)  I was attempting to upgrade from 14.04 to 16.04, but apt threw this error:  The required dependency 'apt (&gt;= 1.0.1ubuntu2.13)' is not installed.   What does this mean, and how can I fix it?  When I type in the command apt-cache policy apt  Shageenth@shageenth-Inspiron-3451:~$ apt-cache policy apt apt: Installed: 1.0.1ubuntu2.11 Candidate: 1.0.1ubuntu2.11 Version table: *** 1.0.1ubuntu2.11 0 100 /var/lib/dpkg/status 1.0.1ubuntu2 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64  Packages   The error happens when I run the command:   sudo do-release-upgrade -d   and it produces the following:  Checking for a new Ubuntu release Get:1 Upgrade tool signature [198 B] Get:2 Upgrade tool [1,265 kB] Fetched 1,265 kB in 0s (0 B/s) authenticate 'xenial.tar.gz' against 'xenial.tar.gz.gpg' extracting 'xenial.tar.gz'  Reading cache  Checking package manager Reading package lists... Done Building dependency tree Reading state information... Done Building data structures... Done  Required depends is not installed  The required dependency 'apt (&gt;= 1.0.1ubuntu2.13)' is not installed.
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Does someone knows if it exists some ppa packages source for the newest Ubuntu version 19.10 i had problem with that when i upgraded from Ubuntu 19.04 to 19.10 i didn't work?
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I have been running Ubuntu 12.04 for the past few weeks. I recently tried to download and install some files through the Update Manager. It located a few files, downloaded them, but then failed to install them. It gave the error:  installArchives() failed: (Reading database ...  (Reading database ... 80% dpkg: unrecoverable fatal error, aborting:  reading files list for package 'libasn1-8-heimdal': Input/output error   I tried using apt-get upgrade but a similar error was produced:  Reading package lists... Done Building dependency tree        Reading state information... Done The following packages will be upgraded:   icedtea-6-jre-cacao icedtea-6-jre-jamvm openjdk-6-jre openjdk-6-jre-headless   openjdk-6-jre-lib 5 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 0 B/34.6 MB of archives. After this operation, 1,024 B of additional disk space will be used. Do you want to continue [Y/n]? y (Reading database ... 80% dpkg: unrecoverable fatal error, aborting:  reading files list for package 'libasn1-8-heimdal': Input/output error E: Sub-process /usr/bin/dpkg returned an error code (2)   Any help would be greatly appreciated. Thanks in advance.  Edit: Here's some extra information that may be useful. My original problem was that the Ubuntu Software Centre would not open. I found that the Update Manager and Synaptic Package Manager also failed to open. They all gave an error along the lines of:   "installArchives() failed: dpkg: error: reading package info file '/var/lib/dpkg/available': Input/output errorError in function:"   After much googling I seemed to fix that problem as the package managers would open again. When I then tried to download and install any updates from the Update Manager I got the error at the beginning of this post.
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When I run sudo apt-get update I get the following error:  W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty/main/binary-armhf/Packages  404  Not Found [IP: 91.189.91.15 80]  E: Some index files failed to download. They have been ignored, or old ones used instead.   I've tried looking in /etc/apt/sources.list.d/ to see if anything in that directory can be removed but all that is in there is  nodesource.list nodesource.list.save   In my sources.list file I have:  deb http://ports.ubuntu.com/ubuntu-ports/ trusty main deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty main deb http://ports.ubuntu.com/ubuntu-ports/ trusty-updates main deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty-updates main deb http://ports.ubuntu.com/ubuntu-ports/ trusty-security main deb-src http://ports.ubuntu.com/ubuntu-ports/ trusty-security main deb http://archive.ubuntu.com/ubuntu trusty main # deb-src http://archive.ubuntu.com/ubuntu trusty main   Can anyone recommend a way of fixing this error?
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I'm a new user of Ubuntu 13.10.  I recently tried to resolve a Skype installation issue and added some PPA involving binary-1386.  Every time I run sudo apt-get update, I get the following error:  W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/saucy/Release  Unable to find expected entry 'restricted/binary-1386/Packages' in Release file (Wrong sources.list entry or malformed file) W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/saucy/Release  Unable to find expected entry 'main/binary-1386/Packages' in Release file (Wrong sources.list entry or malformed file) ... ... E: Some index files failed to download. They have been ignored, or old ones used instead.   I have spent the last two hours trying to resolve this issue, and made changes to my sources.list file by resetting to.the default saucy settings, but these errors are still occuring.  I've also unchecked everything in Software and Updates section, but this still seems to appear.  The error messages seem to be related to the 'binary-1386/Packages' in Release file (Wrong sources.list entry or malformed file) issue as shown above.
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sudo apt-get upgrade installs all updates, not just security updates. I know that I can use Update Manager to select only important security updates, but is there a way to do this from the command line?
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I have tried to find some PPA's for Ubuntu 14.04 but didn't find any. So I tried to install the package for previous releases, with no luck and a lot of dependencies issues.
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I have Ubuntu 10 server and want to update a package to newer version (update rrdtool from 1.3.8 to current 1.4.5). What should I do? Download and build sources or get package from newer distribution? And how to do that?
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I'm trying to update from ubuntu 12.10 lately but I keep getting the "Failed to fetch" error.  W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/quantal-security/Release  Unable to find expected entry 'independent/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)  W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/quantal/Release  Unable to find expected entry 'independent/source/Sources' in Release file (Wrong sources.list entry or malformed file)  W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/quantal-updates/Release  Unable to find expected entry 'independent/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)  W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/quantal-backports/Release  Unable to find expected entry 'independent/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)  E: Some index files failed to download. They have been ignored, or old ones used instead.   I changed the server and deleted the source lists from /var/lib/apt/lists/ like some answers say but still. This is really annoying.
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I need the update manager to only download a single package at a time and not try to download multiple packages at once.  My slow internet cannot handle multiple connections; slows the download to a crawl and some packages will reset themselves halfway through when they time-out.  EDIT  When using apt-get update multiple repositories get checked:   When using apt-get upgrade multiple packages are downloaded:
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When I attempt to upgrade Ubuntu from 17.10 to 18.04, the Update Manger says "Your computer is up-to-date."  Why isn't it detecting the new release?
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Whenever I click on software updater it says Failed to download repository information.  It's been saying this for the past few days now and I don't know why, my Internet connection is fine, I am able to manually download software.  Sometimes it crashes when I click okay, then attempts to look for updates again and gives me the same message.  Any ideas?  [EDIT] I just tried an answer posted where I reset where the downloads come from, but I was left with this message:  W:The repository 'http://ppa.launchpad.net/noobslab/noobslab-conky/ubuntu xenial Release' does not have a Release file.,  W:Data from such a repository can't be authenticated and is therefore potentially dangerous to use.,  W:See apt-secure(8) manpage for repository creation and user configuration details.,  W:https://content.runescape.com/downloads/ubuntu/dists/trusty/InRelease: Signature by key AAC9264309E4D717441DB9527373B12CE03BEB4B uses weak digest algorithm (SHA1),  E:Failed to fetch http://ppa.launchpad.net/noobslab/noobslab-conky/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found,  E:Some index files failed to download. They have been ignored, or old ones used instead.