Trying to install tuxboot using Ubuntu PPA (Ubuntu 18.04), like so:   sudo apt-add-repository ppa:thomas.tsai/ubuntu-tuxboot   but I get   Err:8 http://ppa.launchpad.net/thomas.tsai/ubuntu-tuxboot/ubuntu bionic Release 404  Not Found [IP: 91.189.95.83 80] Reading package lists... Done                       E: The repository 'http://ppa.launchpad.net/thomas.tsai/ubuntu-tuxboot/ubuntu bionic Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.   I have read multiple accounts of users that successfully used the PPA to install tuxboot. What am I doing wrong?
952
When updating, I get the following error message:   W: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial Release' does not have a Release file.   Here, I find another statement on this error:   This recommends removing certain PPAs; and, I'm not sure if I should do that since it might mean not getting the updates that I need.    Is this what I should do?
118137
I am trying to get the Linux distro "PIXEL" to install some PPAS for Wine, and I have run into a issue where it will not install because of the following error:   sudo: add-apt-repository: command not found   I am trying to install wine using the PPA add-apt-repository ppa:ubuntu-wine/ppa and I would like some assistance doing so.
111596
Ever since moving from Windows to Ubuntu the experience has been pleasant. I don't miss windows, at all. Ubuntu 18.04 was my first choice.    However some pre-installed apps like Calculator, Characters, System Monitor and  System Logs do not start at all and I don't get an error. I usually delete them and install the same app but with a higher rating (stars) in the software centre. Has anyone experienced this and what could be the cause?     I unfortunately do not have logs. But the problem can be replicated by following these steps:     Downloading the official ISO from ubuntu.com     Using mksub to create a persistent live USB      Booting from said USB and attempting to open the apps mentioned above.    Edit: 23 Oct 2019  I used these commands to install mksub.  sudo add-apt-repository universe  sudo add-apt-repository ppa:mkusb/ppa  sudo apt-get update  sudo apt-get install mkusb mkusb-nox usb-pack-efi    I did not use a terminal to create the live usb with persistence. I used guidus. This was done from an ubuntu live disk created using Unetbootin on windows.
66108
(quote from chat)     Got a PPA on launchpad for source packages for an IRC bot project I'm associated with (since its all the intermediate packaging for the stuff between releases, it's classified as an "experimental" PPA). Question: I've already packaged the stuff for a lucid build. Any clue how I'd be able to create the same packaging, except package it for maverick, and put it up to the same PPA that I've put the lucid packaging to?
37999
I have installed the Ubuntu 20.04, and want now I want to install Deepin Desktop Environment (dde)  My steps are:   add the ppa and install using apt  sudo add-apt-repository ppa:leaeasy/dde sudo apt-get update sudo apt install dde    But during the command sudo add-apt-repository ppa:leaeasy/dde I get the following error:  $ sudo add-apt-repository ppa:leaeasy/dde  You can install deepin desktop environment by run  sudo add-apt-repository ppa:leaeasy/dde sudo apt-get update apt-get install dde ------ Ubuntu Bionic: https://drive.google.com/file/d/1xkQPb4tWocknuYeY-t41W--kz-9SSL0V/view?usp=sharing ------ Important Issue: Q: Can dde on Ubuntu 16.04? A: Sorry, the dde depends on qt version above than 5.6.      If you want to install dde, please upgrade to 17.04 or above.  More info: https://launchpad.net/~leaeasy/+archive/ubuntu/dde Press [ENTER] to continue or Ctrl-c to cancel adding it.  Hit:1 http://in.archive.ubuntu.com/ubuntu focal InRelease Hit:2 http://in.archive.ubuntu.com/ubuntu focal-updates InRelease                                      Hit:3 http://in.archive.ubuntu.com/ubuntu focal-backports InRelease                                    Ign:4 http://ppa.launchpad.net/leaeasy/dde/ubuntu focal InRelease                                      Hit:5 http://security.ubuntu.com/ubuntu focal-security InRelease            Err:6 http://ppa.launchpad.net/leaeasy/dde/ubuntu focal Release             404  Not Found [IP: 91.189.95.83 80] Reading package lists... Done E: The repository 'http://ppa.launchpad.net/leaeasy/dde/ubuntu focal Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.   I get the similar error with sudo apt-get update :  $ sudo apt-get update Hit:1 http://in.archive.ubuntu.com/ubuntu focal InRelease Hit:2 http://in.archive.ubuntu.com/ubuntu focal-updates InRelease                                       Hit:3 http://in.archive.ubuntu.com/ubuntu focal-backports InRelease                                     Ign:4 http://ppa.launchpad.net/leaeasy/dde/ubuntu focal InRelease            Hit:5 http://security.ubuntu.com/ubuntu focal-security InRelease Err:6 http://ppa.launchpad.net/leaeasy/dde/ubuntu focal Release   404  Not Found [IP: 91.189.95.83 80] Reading package lists... Done E: The repository 'http://ppa.launchpad.net/leaeasy/dde/ubuntu focal Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.   How can I install dde ?
57382
tl;dr: I'm looking for a "canonical" or "recommended" way to install (cli) .deb packages on Ubuntu touch  I've been using Ubuntu on my Desktop and Server for a year and I'm very satisfied. Now I bought the first Ubuntu phone, the BQ Aquaris e4.5 Ubuntu Edition. However, I found out that I can't install normal .deb packages or install things using apt-get. How can I "root" my phone so that I can install "normal" .deb packages?  I tried it myself. I know the first thing is to make your filesystem writable. I did the following steps but then I got stuck because of a dpkg error.  # Desktop: sudo add-apt-repository ppa:phablet-team/tools sudo apt-get update sudo apt-get install phablet-tools  # Phone: Security &amp; Privacy: Lock phone: Lock when idle: Never About this phone: Developer Mode: Developer Mode ON  # connect phone to PC via USB  # Desktop: adb devices # no device detected so I've manually added file touch /home/username/.android/adb_usb.ini # with content: 0x2a47 sudo adb kill-server sudo adb start-server adb devices # now my phone is on the list  # Phone: sudo test -w filename &amp;&amp; echo "Writable" || echo "Not Writable" # verified it is writable sudo add-apt-repository ppa:phablet-team/ppa sudo apt-get update &amp;&amp; sudo apt-get upgrade   And this is the place where error starts to block me:  dpkg: error processing archive /var/cache/apt/archives/powerd_0.16+15.04.20150430-0ubuntu1_armhf.deb (--unpack): unable to make backup link of `./usr/share/powerd/device_configs/config-default.xml' before installing new version: Invalid cross-device link   So I tried    sudo apt-get install -f   But it got stuck on "Bluetooth main config". I restarted the phone, but it didn't want to turn on anymore. I tried the Recover boot option. That worked. I tried install -f again, and this time it worked. But after doing upgrade I still had the same error.
100495
I've been going through docs for the past couple of hours but I haven't understood what the PPA is? I have a cross-platform Java application that I'd like to publish to the Ubuntu Software Center. My application is open-source and I'm using Github.   Apparently, publishing applications to the store isn't as simple as uploading a deb package - am I right? I need to create an account on Launchpad and put all my code there.  I don't intend to move from Git to Bzr merely for the sake of publishing to the app store but luckily, one is able to set up source-code mirroring from Github to Launchpad.  Since my application is still very premature, it'll have updates fairly often. When I build my application on my machine, do I simply go my Ubuntu App Developer page and upload the new DEB package or do they build my application from source?  What exactly is the PPA for? I don't think I'll need too many of the Launchpad features so I'd like to stick to Github if possible.
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 ?
102459
Possible Duplicate:          How do I fix this error?   W:Failed to fetch http://ppa.launchpad.net/deluge-team/ppa/ubuntu/dists/quantal/main/source/Sources  404  Not Found,  W:Failed to fetch http://ppa.launchpad.net/deluge-team/ppa/ubuntu/dists/quantal/main/binary-amd64/Packages  404  Not Found,  W:Failed to fetch http://ppa.launchpad.net/deluge-team/ppa/ubuntu/dists/quantal/main/binary-i386/Packages  404  Not Found,  E:Some index files failed to download. They have been ignored, or old ones used instead.     The same error occur when I tried,   sudo apt-get update &amp;&amp; sudo apt-get upgrade
43798
I'm experimenting with VPNs, so I wanted to install pptpd.  john@desktop:~$ sudo apt-get install pptpd [sudo] password for john:  &lt;snip&gt; The following extra packages will be installed:   bcrelay The following NEW packages will be installed:   bcrelay pptpd 0 upgraded, 2 newly installed, 0 to remove and 11 not upgraded. Need to get 90.5 kB of archives. After this operation, 442 kB of additional disk space will be used. Do you want to continue [Y/n]? y   And everything runs fine until I get down to here:  WARNING: The following packages cannot be authenticated!   bcrelay pptpd Install these packages without verification [y/N]? n E: Some packages could not be authenticated   No authentication?  I'm no security expert, but I'm fairly sure that's a bad thing.  So I .  john@desktop:~$ apt-cache policy pptpd pptpd:   Installed: (none)   Candidate: 1.3.4-3ubuntu1   Version table:      1.3.4-3ubuntu1 0         500 http://us.archive.ubuntu.com/ubuntu/ natty/main i386 Packages john@desktop:~$ apt-cache policy bcrelay bcrelay:   Installed: (none)   Candidate: 1.3.4-3ubuntu1   Version table:      1.3.4-3ubuntu1 0         500 http://us.archive.ubuntu.com/ubuntu/ natty/main i386 Packages   They're coming from Ubuntu.com and not being properly authenticated?  What's going on here?
2202
Every time I try update (using sudo apt-get update) my Ubuntu I get this problem:  W: The repository 'cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1) xenial Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. W: The repository 'ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu xenial Release' does not have a Release file. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. E: Failed to fetch cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)/dists/xenial/main/binary-amd64/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs E: Failed to fetch cdrom://Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)/dists/xenial/main/binary-i386/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs E: Failed to fetch ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found E: Failed to fetch ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/dists/xenial/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 I fix it? I use Ubuntu 16.04 LTS
79860
I need to install Conky Manager to add themes and change settings  to make my own preferences on a desktop screen. However when I type:  sudo add-apt-repository ppa:teejee2008/ppa sudo apt update sudo apt install conky-manager   My Ubuntu says to me that I'm unable to find conky manager package. Can anyone help me to install Conky Manager to personalize my desktop screen properly? Thanks!:)
45018
Cannot add PPA: 'ppa:~darklin20/ubuntu/bomi'.     ERROR: '~darklin20' user or team does not exist.   Showing this message when suing this command:    sudo add-apt-repository ppa:darklin20/bomi   please help me.
93305
I tried to add a new repository to software sources, but "add source" button is unavailable. I can't click on it.  I also tried to add a new software source from the terminal, but it didn't work.  sudo‬‬ ‫‪add-apt-repository‬‬ ‫‪ppa:n-muench/burg‬‬   s‫‪udo‬‬: command not found     I also tried these commands:  ‫‪sudo‬‬ ‫‪add-apt-repository‬‬ ‫‪deb‬‬ ‫‪http://ppa.launchpad.net/n-muench/burg/ubuntu‬‬ natty‬‬ ‫‪main‬‬   sudo‬‬: command not found
120757
I tried those two command and get some error:   sudo add-apt-repository ppa:flexiondotorg/albert  An amazing, desktop environment agnostic, omnilauncher. https://github.com/ManuelSchneid3r/albert  More info: https://launchpad.net/~flexiondotorg/+archive/ubuntu/albert Press [ENTER] to continue or Ctrl-c to cancel adding it.  Ign:1 http://dl.google.com/linux/chrome/deb stable InRelease                    Hit:2 http://dl.google.com/linux/chrome/deb stable Release                      Hit:4 http://mirror.dhakacom.com/ubuntu-archive bionic InRelease                Get:5 http://mirror.dhakacom.com/ubuntu-archive bionic-updates InRelease [88.7 kB] Ign:6 http://ppa.launchpad.net/flexiondotorg/albert/ubuntu bionic InRelease     Get:7 http://mirror.dhakacom.com/ubuntu-archive bionic-backports InRelease [74.6 kB] Get:8 http://mirror.dhakacom.com/ubuntu-archive bionic-security InRelease [83.2 kB] Hit:9 http://ppa.launchpad.net/noobslab/apps/ubuntu bionic InRelease            Hit:10 http://ppa.launchpad.net/notepadqq-team/notepadqq/ubuntu bionic InRelease Err:11 http://ppa.launchpad.net/flexiondotorg/albert/ubuntu bionic Release        404  Not Found [IP: 91.189.95.83 80] Hit:12 http://archive.canonical.com/ubuntu bionic InRelease                     Reading package lists... Done                                                   E: The repository 'http://ppa.launchpad.net/flexiondotorg/albert/ubuntu bionic Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.  sudo apt-get update &amp;&amp; sudo apt-get install albert  Hit:1 http://mirror.dhakacom.com/ubuntu-archive bionic InRelease                Get:2 http://mirror.dhakacom.com/ubuntu-archive bionic-updates InRelease [88.7 kB] Get:3 http://mirror.dhakacom.com/ubuntu-archive bionic-backports InRelease [74.6 kB] Get:4 http://mirror.dhakacom.com/ubuntu-archive bionic-security InRelease [83.2 kB] Ign:5 http://dl.google.com/linux/chrome/deb stable InRelease                    Hit:6 http://archive.canonical.com/ubuntu bionic InRelease                      Hit:7 http://dl.google.com/linux/chrome/deb stable Release                Ign:9 http://ppa.launchpad.net/flexiondotorg/albert/ubuntu bionic InRelease Hit:10 http://ppa.launchpad.net/noobslab/apps/ubuntu bionic InRelease Hit:11 http://ppa.launchpad.net/notepadqq-team/notepadqq/ubuntu bionic InRelease Err:12 http://ppa.launchpad.net/flexiondotorg/albert/ubuntu bionic Release        404  Not Found [IP: 91.189.95.83 80] Reading package lists... Done                                                   E: The repository 'http://ppa.launchpad.net/flexiondotorg/albert/ubuntu bionic Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.
18928
I recently installed Ubuntu 18.04 and I'm not keen on the desktop environment. I want the desktop env. I used to have in Ubuntu 14.04. How can I get it?  I've attempted to use , but when I try to install the Unity's 7.2.5 version using the command:  apt install unity=7.2.5   it gives me   E: Version '7.2.5' for 'unity' was not found   For sure I need to add a PPA for this, but which one!?
10773
W: Invalid 'Date' entry in Release file /var/lib/apt/lists/_var_cuda-repo-8-0-local_Release N: Skipping acquire of configured file 'non-free/binary-arm64/Packages' as repository 'http://repository.spotify.com stable InRelease' doesn't support architecture 'arm64' E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/main/binary-arm64/Packages  404  Not Found [IP: 91.189.88.161 80] E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/main/binary-arm64/Packages  404  Not Found [IP: 91.189.88.161 80] E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/main/binary-arm64/Packages  404  Not Found [IP: 91.189.88.161 80] E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-security/main/binary-arm64/Packages  404  Not Found [IP: 91.189.88.161 80] E: Some index files failed to download. They have been ignored, or old ones used instead.   After I installed Jetpack for Jetson tx1, my ubuntu constantly tries to fetch arm updates. Is there a way to disable this?  EDIT:   $dpkg --print-architecture amd64  $dpkg --print-foreign-architectures i386 arm64   I see that arm64 is included in foreign architectures. How do I remove it?