I am using Lubuntu on a virtual machine and have many files on here. Months ago, I kept getting pop-ups which asked me to update to Lubuntu 13.10 (I believe it was 13.10) Saucy Salamander but I kept saying 'Remind me later'. Now, I can't apt-get install anything and I keep getting these type of errors:  404  Not Found [IP: 91.189.92.201 80]   This post () suggested that I upgrade (I should upgrade to Lubuntu Saucy Salamander). I don't want to download anything from here () because I am afraid I will lose all my important files. Instead, I kept waiting till I got that pop-up again asking if I want to upgrade but I never get that popup anymore. I tried restarting my VM but still no popup. I then tried starting up the Software Updater but it keeps giving me an error saying:  Failed to download repository information. Check your internet connection.    even though I can access the internet with no problems.   I tried installing packages from Synaptic Package Manager but it also gave me the   404  Not Found [IP: 91.189.92.201 80]   errors. How do I upgrade to Lubuntu 13.10 Saucy Salamander? Or how do I get Lubuntu to send me that 'upgrade to Saucy Salamander' pop up again? The one time I want to get the popup, I'm not getting it anymore -.-.
1160
Recently I have installed an older version of Ubuntu on my old machine. Whenever I try to install any software, I get an error saying it couldn't be found:  $ sudo apt-get install vlc Reading package lists... Done                Building dependency tree        Reading state information... Done     E: Couldn't find package vlc
103157
I have recently upgraded from Ubuntu 16.04 to 18.04. Now, when I run apt-get upgrade, I get the following error.  larry@VUbuntu15:~$ sudo apt-get upgrade [sudo] password for larry:  Reading package lists... Done Building dependency tree        Reading state information... Done Calculating upgrade... Done The following packages have been kept back:   linux-generic linux-headers-generic linux-image-generic The following packages will be upgraded:   libvte-2.91-0 linux-libc-dev 2 upgraded, 0 newly installed, 0 to remove and 3 not upgraded. Need to get 1,146 kB of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] y Err:1 http://192.119.223.46:80/data/0116fed259cd0925/us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 libvte-2.91-0 amd64 0.52.2-1ubuntu1~18.04.2   Redirection loop encountered Err:2 http://192.119.223.46:80/data/011634d2c0cdf482/us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 linux-libc-dev amd64 4.15.0-30.32   Redirection loop encountered E: Failed to fetch http://192.119.223.46:80/data/0116fed259cd0925/us.archive.ubuntu.com/ubuntu/pool/main/v/vte2.91/libvte-2.91-0_0.52.2-1ubuntu1~18.04.2_amd64.deb  Redirection loop encountered E: Failed to fetch http://192.119.223.46:80/data/011634d2c0cdf482/us.archive.ubuntu.com/ubuntu/pool/main/l/linux/linux-libc-dev_4.15.0-30.32_amd64.deb  Redirection loop encountered E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?   If I run sudo apt-get update --fix-missing, I get the same errors.  What does the "Redirection loop encountered" mean? How can I fix this error?  No problems with apt-get update. The sources.list file seems to be OK.
25029
I just finished backing up my system and when I try to upgrade to Utopic Unicorn, I get the error "Cannot Calculate the upgrades." I ran the upgrade by sudo apt-get dist-upgrade, sudo do-release-upgrade after the GUI method failed, they all gave the same error.  The feedback gives some recommendations:  This can be caused by:  * Upgrading to a pre-release version of Ubuntu  * Running the current pre-release version of Ubuntu  * Unofficial software packages not provided by Ubuntu    I am not upgrading to a pre-release version nor coming from one, I'm going from Ubuntu 14.04 LTS to 14.10. I have no broken packages and I have unchecked all my non-official software sources in the 'Software &amp; Updates' manager.  My guess left is the Unofficial software packages not provided by Ubuntu. If anyone could give any help as to how to check for unofficial packages using Synaptic or another, my appreciation.  Are there any other factors that may be causing this error and how would I go about checking/fixing those?  Thanks.  Edit: I have no broken or held packages. Everything is up-to-date, and restarting everything or anything has no effect.
27136
I am trying to upgrade to a new Ubuntu version but the update manager does not recognize an update. Why not?
28467
The old-releases.ubuntu.com mirror hosts the repositories for EOL Ubuntu releases. The  currently lists up to 11.10 (or 12.04.3 if you count point upgrades), but the  lists up to 13.04. Why the discrepancy? When will the main page be updated? When will the newest EOL release (13.10) be shifted here?
93555
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?
104258
I'm trying to do an apt-get update or apt-get install xyz and I'm seeing timeouts like this:  W: Failed to fetch http://eu-west-1.ec2.archive.ubuntu.com/ubuntu/dists/oneiric-updates/Release.gpg   Unable to connect to eu-west-1.ec2.archive.ubuntu.com:http: [IP: 10.224.87.159 80]   Is this a transient issue with Ubuntu, or maybe it's something on my end. The box I'm accessing it from is in EC2-EU.  Perhaps there is a way to force the installer to use the US servers which seem to work?
37604
I know this is asked often but nothing seems to work for me. Every time I try to update I get the following:  sudo apt-get update Get:1 http://archive.ubuntu.com precise Release.gpg Get:2 http://ppa.launchpad.net precise Release.gpg Get:3 http://archive.ubuntu.com precise Release                             Get:4 http://ppa.launchpad.net precise Release.gpg                          Get:5 http://ppa.launchpad.net precise Release                               Ign http://archive.ubuntu.com precise Release                                E: GPG error: http://archive.ubuntu.com precise Release: The following signatures were invalid: NODATA 1 NODATA 2   The only way I can successfully execute   sudo apt-get update   is by removing ALL software sources (which is pointless).  Regardless of whatever software source I use (official ubuntu or some other PPA) I get the same errors.  So far I have tried:   Changing the server from MAIN to some other . . . no joy   The suggested fixes from , , , and .   Nothing seems to work. It seems that all my key data is missing and I can't figure out how to get it back.  Any help would be very appreciated !
26031
I have created a USB stick with a persistent Ubuntu 16.04 (release version). I tried a couple of ways, using Startup Disk Creator and MultiSystem, but I get the same end result.  When I boot into the USB and do 'apt-get update', all is well.  When I try 'apt-get dist-upgrade' I get:     ** (appstreamcli:2761): CRITICAL **: Error while moving old database out of the way. AppStream cache update failed.   The only reference to this error message I can find is  but would appear to be fixed, at least fixed by the time the release version of Ubuntu 16.04.  Aside: I want to test Unity8, which includes installing software.  I don't have a spare computer, so I thought a persistent USB would do the trick.  Any takers?
53512
I want to update Ubuntu, but I see this message:  E:Malformed line 1 in source list /etc/apt/sources.list.d/medibuntu.list (type), E:The list of sources could not be read., E:The package lists or status file could not be parsed or opened.   How can I solve this?
115314
I am trying to install devstack on Ubuntu server 14.04.  I had a few problems before with HOST_IP, GIT_BASE and some updates... I fixed all of them, but now I am stuck on this one. I tried apt-get update and apt-get install libsystemd-dev, and I get  E: unable to locate package libsystemd-dev
62876
When doing an apt-get update/upgrade I see that warning  W: Conflicting distribution: https://downloads.plex.tv/repo/deb public InRelease (expected public but got )   I was upgrading to Ubuntu Zesty 17.04 before and do not know how to fix the above. Already have seen ? but there are no suggested fixes for that.  Maybe one of you can give some hints? Thanks!
10307
I wanted to upgrade to 14.04.2 point release from 14.04.  What I did was:  sudo apt-get update &amp;&amp; sudo apt-get upgrade &amp;&amp;  sudo apt-get dist-upgrade -y   Then I wanted to upgrade to 3.16 kernel, since it wasn't done with the the above command, so what I did was:  sudo apt-get install linux-generic-lts-utopic xserver-xorg-lts-utopic libegl1-mesa-drivers-lts-utopic xserver-xorg-video-all-lts-utopic xserver-xorg-input-all-lts-utopic sudo apt-get install linux-signed-generic-lts-utopic   Now when I do:   uname -a I get   Linux Y500 3.16.0-33-generic #44~14.04.1-Ubuntu SMP Fri Mar 13 10:33:29 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux  cat /etc/os-release | grep VERSION= I get  VERSION="14.04.2 LTS, Trusty Tahr"   And when I do lsb_release -a I get  Distributor ID: Ubuntu Description:    Ubuntu 14.04.2 LTS Release:    14.04 Codename:   trusty   I know that uname -a and lsb_release -a both refer to different info, but why does  cat /etc/os-release | grep VERSION= show different version?
110868
when i use command sudo apt-get install git it's return below erorrs and it's return for any application to install below :   Setting up util-linux (2.25.2-4ubuntu3) ... update-alternatives: error: cannot stat file '/usr/bin/nodejs': Too many levels of symbolic links dpkg: error processing package util-linux (--configure):  subprocess installed post-installation script returned error exit status 2 Errors were encountered while processing:  util-linux E: Sub-process /usr/bin/dpkg returned an error code (1)   update with sudo apt-get update not working and report below erorr  Fetched 7,032 kB in 5min 32s (21.2 kB/s)                                        W: Failed to fetch http://ppa.launchpad.net/paullo612/unityshell-rotated/ubuntu/dists/vivid/main/binary-amd64/Packages  404  Not Found  W: Failed to fetch http://ppa.launchpad.net/paullo612/unityshell-rotated/ubuntu/dists/vivid/main/binary-i386/Packages  404  Not Found  E: Some index files failed to download. They have been ignored, or old ones used instead.   how can fix it ?
104893
I'm a new Ubuntu user, and when I try to run sudo apt update, it returns the following errors. Hit:1 http://security.ubuntu.com/ubuntu focal-security InRelease Err:2 http://archive.ubuntu.com/ubuntu focal InRelease   Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::24). - connect (101: Network is unreachable) Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) Could not connect to archive.ubuntu.com:80 (91.189.88.142), connection timed out Could not connect to archive.ubuntu.com:80 (91.189.88.152), connection timed out Err:3 http://archive.ubuntu.com/ubuntu focal-updates InRelease   Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::24). - connect (101: Network is unreachable) Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) Err:4 http://archive.ubuntu.com/ubuntu focal-backports InRelease   Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::24). - connect (101: Network is unreachable) Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) Reading package lists... Done Building dependency tree Reading state information... Done All packages are up to date. W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal/InRelease  Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::24). - connect (101: Network is unreachable) Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) Could not connect to archive.ubuntu.com:80 (91.189.88.142), connection timed out Could not connect to archive.ubuntu.com:80 (91.189.88.152), connection timed out W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal-updates/InRelease  Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::24). - connect (101: Network is unreachable) Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal-backports/InRelease  Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::24). - connect (101: Network is unreachable) Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) W: Some index files failed to download. They have been ignored, or old ones used instead.  Can you help me to solve this problem? I'm using WSL 2 and Windows 10 using AMD graphic.
49885
I am using Ubuntu 16.04 Beta 2 at the moment and every time I try to update at home via sudo apt-get update or upgrade trough sudo apt-get upgrade I wont get any feedback. Even installing of anything will have the same result. It will just "hang up" on 0% while fetching data.  $ sudo apt-get update [sudo] password for niclas:  0% [Connecting to archive.ubuntu.com (2001:67c:1560:8001::11)] [Connecting to archive.canonical.com (2001:67c:1360:8c01::1b)]   I have no idea how to solve the problem. I already tried to ping6 archive.ubuntu.com with 100% packet loss while just ping wont have any loss.  I changed the DNS-Server (IPv4 &amp; IPv6) to Google's one no solution either.
11645
The terminal gave me these errors when updating the software with sudo apt update.    Hit:1 http://it.archive.ubuntu.com/ubuntu bionic InRelease Hit:2 http://it.archive.ubuntu.com/ubuntu bionic-updates InRelease                                                                                        Hit:3 http://it.archive.ubuntu.com/ubuntu bionic-backports InRelease                                                                                      Hit:4 http://security.ubuntu.com/ubuntu bionic-security InRelease                                      Hit:5 http://archive.canonical.com/ubuntu bionic InRelease                 Traceback (most recent call last):                       File "/usr/lib/cnf-update-db", line 8, in &lt;module&gt;     from CommandNotFound.db.creator import DbCreator ModuleNotFoundError: No module named 'CommandNotFound' Reading packages list... Done E: Problem executing scripts APT::Update::Post-Invoke-Success     'if /usr/bin/test -w /var/lib/command-not-found/ -a -e /usr/lib/cnf-update-db;       then /usr/lib/cnf-update-db &gt; /dev/null; fi'   E: Sub-process returned an error code     These are the results of sudo apt install --reinstall command-not-found  Reading package lists... Done  Building dependency tree         Reading state information... Done 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded. Need to get 0 B/5.188 B of archives After this operation, 0 B of additional disk space will be used. (Reading the database ... 225797 files and directories currently installed.) Preparations for extracting ... / command-not-found_18.04.4_all.deb ... Extracting command-not-found (18.04.4) on (18.04.4) ... Configuring command-not-found (18.04.4) ... libdvd-pkg: Package libdvdcss2-1.4.2-1 was removed, stop processing...   When I tried the command sudo apt update again after reinstalling command-not-found, the results were the same as described in the first text block.