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    Ubuntu Touch Programming Course

    Scheduled Pinned Locked Moved App Development
    documentationubuntu touch
    113 Posts 27 Posters 67.7k Views 12 Watching
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      • Pulsar33P Offline
        Pulsar33 @mimecar
        last edited by

        @mimecar said in Ubuntu Touch Programming Course:

        • sudo add-apt-repository ppa:ubuntu-lxc/lxd-stable

        This command returned an error. I tried this instead :

        • sudo add-apt-repository ppa:ubuntu-lxc/stable

        I hope it was the good choice. Next I followed the proposal of HendriXXX :

        • sudo chown lxd:lxd /var/lib/lxd/unix.socket

        All the process worked and my kits are created now.
        However, I didn't see the error "container is faulty"
        Proceeding to the next steps ...
        Best regards
        Pulsar33

        Aquaris BQ E5 HD UBports OTA-25 (currently testing features)
        Aquaris BQ E5 HD Ubuntu Edition Canonical OTA-15 (last Canonical version, daily use)
        Raspberry Pi 4 B - 4 GB & 8 GB with various OS and Desktops (UBports not OK)

        1 Reply Last reply Reply Quote 1
        • gsilvaptG Offline
          gsilvapt
          last edited by

          This may seem off-topic, but way a custom PPA when LXC and LXD are available in the repositories?

          1 Reply Last reply Reply Quote 0
          • Pulsar33P Offline
            Pulsar33 @mimecar
            last edited by Pulsar33

            @mimecar : Hello
            I've been able to generate Hello Word and Calculator applications.
            All is perfectly clear and well explained. Thank you !

            However, I'm facing three errors as described below. Maybe are they due to the same reason.

            • When I create a project, only 14.10 or 14.04 options are available :
              Only 14.10

            • If I check the kits in Compile & Execute, I see a warning about path not matching :
              Path not matching

            • Moreover, each time I launch Qt Creator, an update is proposed for each kit and errors occur.
              Showing details, several tranfers are not available and tasks end with errors:
              [...]
              Ign http://archive.ubuntu.com vivid-security/restricted Translation-en
              Ign http://archive.ubuntu.com vivid-security/universe Translation-en
              Err http://archive.ubuntu.com vivid/main Sources 404 Not Found [IP: 91.189.88.161 80]
              Err http://archive.ubuntu.com vivid/restricted Sources 404 Not Found [IP: 91.189.88.161 80]
              Err http://archive.ubuntu.com vivid/universe Sources 404 Not Found [IP: 91.189.88.161 80]
              Err http://archive.ubuntu.com vivid/multiverse Sources 404 Not Found [IP: 91.189.88.161 80]
              Err http://archive.ubuntu.com vivid/main amd64 Packages 404 Not Found [IP: 91.189.88.161 80]
              [...]
              Err http://archive.ubuntu.com vivid-security/multiverse amd64 Packages 404 Not Found [IP: 91.189.88.161 80]
              W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid/main/source/Sources 404 Not Found [IP: 91.189.88.161 80]
              W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid/restricted/source/Sources 404 Not Found [IP: 91.189.88.161 80]
              W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid/universe/source/Sources 404 Not Found [IP: 91.189.88.161 80]
              W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid/multiverse/source/Sources 404 Not Found [IP: 91.189.88.161 80]
              [...]
              W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid-security/multiverse/binary-amd64/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.
              ---Task exited with errors, please check the output---

            As far as ipvoid knows, the faulty IP is :
            IP Address: 91.189.88.161
            Hostname: keeton.canonical.com
            Organization: Canonical Group Limited
            ASN: AS41231 Canonical Group Limited
            Continent: Europe (EU)
            Country: United Kingdom (GB)
            Latitude\Longitude: 51.5142 / -0.0931
            Region: England
            City: London

            It seems that this must be solved to continue learning how to create my own applications. Have you a solution please ?
            Have a nice day.
            Pulsar33

            Aquaris BQ E5 HD UBports OTA-25 (currently testing features)
            Aquaris BQ E5 HD Ubuntu Edition Canonical OTA-15 (last Canonical version, daily use)
            Raspberry Pi 4 B - 4 GB & 8 GB with various OS and Desktops (UBports not OK)

            advocatuxA 1 Reply Last reply Reply Quote 0
            • advocatuxA Offline
              advocatux @Pulsar33
              last edited by

              @pulsar33 Vivid reached End of Life in February 4, 2016. You need to replace all the archive.ubuntu.com with old-releases.ubuntu.com in your sources.list

              Pulsar33P 1 Reply Last reply Reply Quote 1
              • Pulsar33P Offline
                Pulsar33 @advocatux
                last edited by Pulsar33

                @advocatux @mimecar : Hello
                Thank you for the reply, however I'm not sure to know what to do now. As far as I understand, the problem is to update the kits, not my system which is perfectly up to date (I use MINT18.3). I've searched the whole GUI of Qt Creator but not found how to specify the sources.

                Where are defined the sources for the kits ?

                Moreover, why am I the first to have the problem following the Programming Course if the end of life of Vivid was in February 2016 ?

                Good evening
                Pulsar33

                Aquaris BQ E5 HD UBports OTA-25 (currently testing features)
                Aquaris BQ E5 HD Ubuntu Edition Canonical OTA-15 (last Canonical version, daily use)
                Raspberry Pi 4 B - 4 GB & 8 GB with various OS and Desktops (UBports not OK)

                T 1 Reply Last reply Reply Quote 0
                • T Offline
                  Talkless @Pulsar33
                  last edited by

                  @pulsar33 said in Ubuntu Touch Programming Course:

                  As far as I understand, the problem is to update the kits, not my system which is perfectly up to date

                  It seem so. I guess we need to update /etc/apt/sources.list inside lxd contaner used for building?

                  Volla Phone X

                  T 1 Reply Last reply Reply Quote 1
                  • T Offline
                    Talkless @Talkless
                    last edited by Talkless

                    I did this:

                    • Enter container with lxc exec device-armhf -- /bin/bash
                    • Replace archive into old-releases in sources.list with sed -i "s|archive|old-releases|" /etc/apt/sources.list

                    But after that, running apt update inside container, I get errors about ports.ubuntu.com/ubuntu-ports/dists/vivid/... (404 Not Found), while old-releases works fine for other repositories.

                    There are in fact no vivid in this repo:
                    http://ports.ubuntu.com/ubuntu-ports/dists/

                    So what cane ports host be changed into? Is there archive as that old-releases somewhere?

                    Volla Phone X

                    C Pulsar33P 2 Replies Last reply Reply Quote 1
                    • C Offline
                      chris @Talkless
                      last edited by chris

                      @talkless In my containers I replaced all urls by http://old-releases.ubuntu.com/ubuntu
                      also the ports ones
                      vivid vivid-security vivid-backports vivid-updates (main / multiverse / restricted / universe) are all included there

                      T 1 Reply Last reply Reply Quote 0
                      • T Offline
                        Talkless @chris
                        last edited by

                        @chris said in Ubuntu Touch Programming Course:

                        @talkless In my containers I replaced all urls by http://old-releases.ubuntu.com/ubuntu
                        also the ports ones
                        vivid vivid-security vivid-backports vivid-updates (main / multiverse / restricted / universe) are all included there

                        But there's no ubuntu-ports repository (directory) inside http://old-releases.ubuntu.com/

                        Volla Phone X

                        1 Reply Last reply Reply Quote 0
                        • Pulsar33P Offline
                          Pulsar33 @Talkless
                          last edited by

                          @talkless @chris @mimecar : Well shot Guys !
                          Thank you for the tip. I didn't try for the armhf-device kit but I succeed for the desktop kit. In fact, the configuration is different for the two kits and the desktop kit only involves "archive". So the tip of @Talkless was clean and the (long) update took place without error.

                          101 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. Need to get 95.3 MB of archives. After this operation, 36.1 MB of additional disk space will be used.
                          [...]
                          Get:103 http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu/ vivid/main unity8-private amd64 8.15+15.04.20161129-0ubuntu1 [584 kB]
                          [...]
                          Processing triggers for libc-bin (2.21-0ubuntu4.0.1) ...
                          ---Task exited with no errors---

                          Most updates are from ci-train-ppa-service ...
                          The HelloWorld example compiles and runs without problem.

                          Upon the next launch of Qt Creator, only the armhf-device update is proposed.
                          Finding ports.ubuntu.com correct source may solve the last problem.

                          Good evening
                          Pulsar33

                          Aquaris BQ E5 HD UBports OTA-25 (currently testing features)
                          Aquaris BQ E5 HD Ubuntu Edition Canonical OTA-15 (last Canonical version, daily use)
                          Raspberry Pi 4 B - 4 GB & 8 GB with various OS and Desktops (UBports not OK)

                          1 Reply Last reply Reply Quote 0
                          • Pulsar33P Offline
                            Pulsar33
                            last edited by

                            Hello,
                            I'm not sure I've done the right things and I hope a "guru" will warn me if necessary but I found how to update the device-armhf kit :

                            lxc exec device-armhf -- /bin/bash
                            root@device-armhf:/# cd /etc/apt
                            root@device-armhf:/etc/apt# sed -i "s|archive|old-releases|" sources.list
                            root@device-armhf:/etc/apt# sed -i "s|ports.ubuntu.com/ubuntu-ports|old-releases.ubuntu.com/ubuntu|" sources.list

                            Then, the (long) update ends with no error.

                            This seems fine but I must now understand why all my choices are for 14-10 framework despite the fact that my kits are made with 15-04 framework ...
                            limited choices

                            Solution is welcome !
                            Best regards
                            Pulsar33

                            Aquaris BQ E5 HD UBports OTA-25 (currently testing features)
                            Aquaris BQ E5 HD Ubuntu Edition Canonical OTA-15 (last Canonical version, daily use)
                            Raspberry Pi 4 B - 4 GB & 8 GB with various OS and Desktops (UBports not OK)

                            1 Reply Last reply Reply Quote 0
                            • M Offline
                              metalbiker
                              last edited by

                              I think this is a major indication that the SDK needs to be maintained so we can make Ubuntu Touch a success. I think a lot of you can agree with that.

                              advocatuxA 1 Reply Last reply Reply Quote 0
                              • advocatuxA Offline
                                advocatux @metalbiker
                                last edited by

                                @metalbiker this is a volunteer based project, and it's free software, so if any developer(s) wants to maintain it, the door is open.

                                1 Reply Last reply Reply Quote 0
                                • tatonutaT Offline
                                  tatonuta
                                  last edited by

                                  This post is deleted!
                                  1 Reply Last reply Reply Quote 0
                                  • tatonutaT Offline
                                    tatonuta
                                    last edited by tatonuta

                                    Hello! I am having a problem with creation of Kits (pages 15-19 of the PDF).

                                    I try to create new Kit/Build target (as described on pages 15-19) and I choose option "Build and run your application locally on the Desktop", and click "Next", and choose the "Ubuntu-sdk-15.04-dev" and click "Next", and choose target name "default", and click "Finish"

                                    then a window appears showing that the kit is being downloaded

                                    0_1531090363679_Zrzut ekranu z 2018-07-09 00-50-08_same-okno.png

                                    and finally an error message appears:

                                    • Creating image with: framework: ubuntu-sdk-15.04 arch: amd64
                                      error: Failed to load raw.lxc
                                      ---Task exited with errors, please check the output---

                                    0_1531087501292_Zrzut ekranu z 2018-07-08 23-45-58_800px.png

                                    The same error happens when I try to do the kit under "Build your application to run on a Ubuntu device or emulator" and choose "Ubuntu-sdk-15.04-dev".

                                    [I do not use Wizard because I had errors during the first try and the "Do not show this Wizard the next time" was ticked so I have no access to the Wizard anymore. But I have found equivalent wizard in QTcreator - Tools - Ubuntu so I use this one]

                                    I am doing it on a new, freshly installed Ubuntu 16.04.4. Before this errors I had errors similar to people who wrote in this thread and I used their/your hints to overcame those errors (like changing .

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                                    • tatonutaT Offline
                                      tatonuta @mimecar
                                      last edited by

                                      @mimecar said in Ubuntu Touch Programming Course:

                                      Good afternoon.
                                      You can now download the resources I used in the UbuconParis 2017 workshop. The virtual machine has the following features:

                                      Ubuntu 16.04 with the Mate desktop.
                                      SDK already configured with IDE icon on the desktop.
                                      The workshop exercises are saved in the User Folder.

                                      Hi! Thanks for doing it! After several hours I still have problems with installing Ubuntu SDK IDE so it looks like a perfect solution for me.

                                      I have downloaded the 13 GB files. What do I do now?

                                      advocatuxA 1 Reply Last reply Reply Quote 0
                                      • advocatuxA Offline
                                        advocatux @tatonuta
                                        last edited by

                                        @tatonuta you need to configure VirtualBox on your computer before installing those downloaded files.

                                        tatonutaT 1 Reply Last reply Reply Quote 1
                                        • tatonutaT Offline
                                          tatonuta @advocatux
                                          last edited by

                                          @advocatux Thanks! Is this a right tutorial for mounting VirtualBox? http://nomone.com/2016/11/05/mounting-a-vdi-file-in-ubuntu/ If yes: I have made all steps which are in the instructions and have successfully mounted the /dev/nbd0p1. But what should I do next? What command? How can I install the downloaded file?

                                          advocatuxA 1 Reply Last reply Reply Quote 0
                                          • advocatuxA Offline
                                            advocatux @tatonuta
                                            last edited by

                                            @tatonuta those instructions you've linked are for quemu, not virtualbox

                                            I think Virtualbox is easier if you don't have previous experience with VM, so install virtualbox and then follow this http://linuxbsdos.com/2015/11/13/how-to-import-a-virtual-machine-image-into-virtualbox/

                                            tatonutaT 1 Reply Last reply Reply Quote 1
                                            • tatonutaT Offline
                                              tatonuta @advocatux
                                              last edited by

                                              @advocatux Thanks a lot. It worked for me. 🙂

                                              1 Reply Last reply Reply Quote 1
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