I have been trying to update from ubuntu 12.10 to 13.04 for several days.  Whenever I try to run the upgrade, I get the following message:  W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/raring/main/source/Sources  404  Not Found , W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/raring/main/binary-i386/Packages  404  Not Found , E:Some index files failed to download. They have been ignored, or old ones used instead.   The update then terminates. Is there any work around to this?
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
30429
So I have Ubuntu installed on my pc, and I want to upgrade to the new Ubuntu which was just released. When I check for any new updates it doesn't show any upgrades to the new release. How can I fix this? Thanks!
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?
33767
I tried sudo apt-get update in the new Windows Subsystem for Linux, but I get the following error:    The most relevant parts seem to be the "could not resolve" lines about Ubuntu servers, like:  Could not resolve 'archive.ubuntu.com'
64908
I'm trying to update my system using apt-get, but it's giving me this error  Err http://bd.archive.ubuntu.com raring Release.gpg          Could not connect to bd.archive.ubuntu.com:80 (116.193.170.18), connection timed out Err http://bd.archive.ubuntu.com raring-updates Release.gpg   Unable to connect to bd.archive.ubuntu.com:http: Err http://bd.archive.ubuntu.com raring-backports Release.gpg   Unable to connect to bd.archive.ubuntu.com:http: Reading package lists... Done W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/raring/Release.gpg  Could not connect to bd.archive.ubuntu.com:80 (116.193.170.18), connection timed out W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/raring-updates/Release.gpg  Unable to connect to bd.archive.ubuntu.com:http: W: Failed to fetch http://bd.archive.ubuntu.com/ubuntu/dists/raring-backports/Release.gpg  Unable to connect to bd.archive.ubuntu.com:http: W: Some index files failed to download. They have been ignored, or old ones used instead.   I am not a Ubuntu master but I can understand this is not a computer error. Any clues on how to fix it?
1545
I'm following the , but on launching the upgrade tool I get this response:  Checking for a new ubuntu release No new release found   Am I doing something wrong? Is there a workaround?
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 !
30485
When I do upgrade it gets stuck here:  user@plato:~# sudo apt-get upgrade Reading package lists... Done Building dependency tree        Reading state information... Done Calculating upgrade... Done The following packages will be upgraded:   bind9-host coreutils cpio curl dnsutils libbind9-90 libc-bin libc-dev-bin   libc6 libc6-dev libcgmanager0 libcurl3 libcurl3-gnutls libdns100   libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 libdrm2 libisc95 libisccc90   libisccfg90 libjasper1 liblwres90 libplymouth2 libsepol1 libssl-dev   libssl-doc libssl1.0.0 linux-libc-dev mime-support multiarch-support ntp   ntpdate openssl plymouth plymouth-theme-ubuntu-text python3-distupgrade   ubuntu-release-upgrader-core unzip 39 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 16.0 MB of archives. After this operation, 12.3 kB of additional disk space will be used. Do you want to continue? [Y/n] y 0% [Connecting to us.archive.ubuntu.com (2001:67c:1562::15)] ░   When I do update it gets stuck here:  user@plato:~# apt-get update 0% [Connecting to us.archive.ubuntu.com (2001:67c:1562::14)] [Connecting to sec░   I'm able to ping us.archive.ubuntu.com just fine:  user@plato:~# ping us.archive.ubuntu.com PING us.archive.ubuntu.com (91.189.91.23) 56(84) bytes of data. 64 bytes from economy.canonical.com (91.189.91.23): icmp_seq=1 ttl=54 time=81.5 ms 64 bytes from economy.canonical.com (91.189.91.23): icmp_seq=2 ttl=54 time=81.5 ms 64 bytes from economy.canonical.com (91.189.91.23): icmp_seq=3 ttl=54 time=81.5 ms 64 bytes from economy.canonical.com (91.189.91.23): icmp_seq=4 ttl=54 time=81.4 ms ^C --- us.archive.ubuntu.com ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3004ms rtt min/avg/max/mdev = 81.425/81.528/81.582/0.355 ms   What can i do to fix this?    What I have tried so far.  I've tried following directions on this blog:   To force apt-get to use IPv4 exclusively   Create a file in /etc/apt/apt.conf.d/99force-ipv4 Add this line to newly created file Acquire::ForceIPv4 false; Apt-get will now use IPv4 exclusively
72965
Please let me know how to remove certain repositories in Ubuntu 11.04. I am getting the following errors while updating.  sudo apt-get update  Err http://ppa.launchpad.net natty/main Sources                                      404  Not Found Err http://ppa.launchpad.net natty/main i386 Packages                                404  Not Found ......  E: Some index files failed to download. They have been ignored, or old ones used instead.
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?
111667
I am using Ubuntu 12.04 right now. If I use the command sudo apt-get dist-upgrade will that upgrade my Ubuntu to 12.10? Does that mean I won't be using the LTS version after that? I don't want to use Ubuntu 12.10 because I've already tried it and it's very heavy for my netbook.
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I've downloaded Ubuntu 13.10 daily CD and I want to upgrade all my computers using this Live CD (they all run Ubuntu 13.04 presently).  How can I upgrade to Ubuntu 13.10 exploiting the packages in the CD? Is there any standard procedure for this?  I tried this:   I rebooted into Live CD, searching for an option like "Upgrade from 13.04 to 13.10" (I think it used to appear in the alternate CD) but found nothing like that. -EDIT- Even if the option is not present it is possible to "mimic it" by entering manual partitioning and tell Ubuntu to reuse the existing partitions without formatting them. Ubuntu will keep user's data and install the updated software. Nevertheless this is not a viable solution because after the upgrade one has to reinstall all the programs he needs, since it is like having a vanilla Ubuntu. I booted into Ubuntu 13.04 and added the CD to my software sources. I then proceeded with the upgrade however the CD was never accessed and everything was downloaded from the web.   I know, I know... I have other options rather than using the Live CD, namely:   Forget the CD and setup apt-cacher in the LAN Copy the deb files from the CD into /var/cache/apt/archives/   But this looks unreasonable to me... Why can't I insert the CD and exploit its contents? I would like to avoid apt-cacher and if possible avoid also manually copying the packages.  Any idea on how to accomplish this?
114182
I know that there are three command to update and then upgrade the whole system, these are:        sudo apt-get update        # Fetches the list of available updates   sudo apt-get upgrade       # Strictly upgrades the current packages   sudo apt-get dist-upgrade  # Installs updates (new ones)      Is there a super-upgrade command that combines all these commands to one?
75874
Ever since I upgraded to 13.10, the software updater does not show all the available updates. Some will appear and can be installed just fine, but once it claims that all software is up to date, using sudo apt-get upgrade shows that there are still more packages waiting to be updated. I can update them via the command line, but that only solves things temporarily. I'm not sure why some show up and others don't. How can I make Update Manager update all packages?  Update-manager shows this:    But apt-get shows this:   Thanks!
10743
For the last week or more, running sudo apt-get update culminates in error:  Reading package lists... Done E: Failed to fetch http://au.archive.ubuntu.com/ubuntu/dists/xenial/main/dep11/Components-amd64.yml   Could not open file /var/lib/apt/lists/partial/au.archive.ubuntu.com_ubuntu_dists_xenial_main_dep11_Components-amd64.yml.gz - open (13: Permission denied) [IP: 202.158.214.106 80] E: Failed to fetch http://au.archive.ubuntu.com/ubuntu/dists/xenial-backports/main/dep11/icons-64x64.tar  Could not open file /var/lib/apt/lists/partial/au.archive.ubuntu.com_ubuntu_dists_xenial-backports_main_dep11_icons-64x64.tar.gz - open (13: Permission denied) [IP: 202.158.214.106 80] E: Some index files failed to download. They have been ignored, or old ones used instead.   Entering either of the 2 specified urls into a browser address bar results in a 'File not found' (404) error - but if I append .gz to both addresses, then the respective files can be downloaded.  However, having downloaded the 2 files, I then don't know how (or if) I can utilize them.  Seeking advice on how best to proceed.
44012
I'm unable to update nodejs, and I can't see why.  If I were to make a guess, I'd say that I have two repositories listed in apt-get, that both contain a nodejs package.  Here's what I've done:  Remove old version:  sudo apt-get remove --purge nodejs npm   Then, going by , I've run:  curl -sL https://deb.nodesource.com/setup_5.x | sudo -E bash -   And then:  sudo apt-get install -y nodejs   I then run:  nodejs -v   Which returns:  v0.10.25   Can anyone explain what's going wrong? And how I can remedy this situation?  Many thanks.
116417
I recently installed Ubuntu 15.10 on my old computer.  I'm now trying to create a windows usb stick to install on a new computer I'm building.  When I add the repository      sudo add-apt-repository ppa:colingille/freshlight   and I try to update, I get the following errors:      W: Failed to fetch http://ppa.launchpad.net/colingille/freshlight/ubuntu/dists/wily/main/binary-amd64/Packages  404  Not Found                               W: Failed to fetch http://ppa.launchpad.net/colingille/freshlight/ubuntu/dists/wily/main/binary-i386/Packages  404  Not Found      E: Some index files failed to download. They have been ignored, or old ones used instead.   Then when I try:     sudo apt-get install winusb   I get:     E: Unable to locate package winusb   Can anyone help me find a solution?