How do I resume a release upgrade?












45















Yesterday I started the upgrade from 12.10 to 13.04, but I interrupted it because it was taking too long. Now if I restart it, it doesn't proceed.



Is there any possibility to clean the mess it left when I interrupted it and make a clean restart of this update?










share|improve this question

























  • There must be a way to a) delete all temporary data he stored for the last trial or b) tell him to start again. The simple way "just go ahead where you were interrupted" does not seem to work!

    – Dave
    Sep 17 '13 at 14:33






  • 1





    I'm not sure, but maybe 'sudo apt-get upgrade' and afterwards 'sudo apt-get update' could have fixed it!

    – Dave
    Sep 17 '13 at 19:08











  • I added instructions to my answer for how to delete all the download packages. As for the upgrade/update, usually you want to do it the other way around: "sudo apt-get update && sudo-apt-get upgrade" (you can do it on one line--the '&&' means the second command will only run if the first succeeds).

    – Lambart
    Sep 17 '13 at 19:36
















45















Yesterday I started the upgrade from 12.10 to 13.04, but I interrupted it because it was taking too long. Now if I restart it, it doesn't proceed.



Is there any possibility to clean the mess it left when I interrupted it and make a clean restart of this update?










share|improve this question

























  • There must be a way to a) delete all temporary data he stored for the last trial or b) tell him to start again. The simple way "just go ahead where you were interrupted" does not seem to work!

    – Dave
    Sep 17 '13 at 14:33






  • 1





    I'm not sure, but maybe 'sudo apt-get upgrade' and afterwards 'sudo apt-get update' could have fixed it!

    – Dave
    Sep 17 '13 at 19:08











  • I added instructions to my answer for how to delete all the download packages. As for the upgrade/update, usually you want to do it the other way around: "sudo apt-get update && sudo-apt-get upgrade" (you can do it on one line--the '&&' means the second command will only run if the first succeeds).

    – Lambart
    Sep 17 '13 at 19:36














45












45








45


9






Yesterday I started the upgrade from 12.10 to 13.04, but I interrupted it because it was taking too long. Now if I restart it, it doesn't proceed.



Is there any possibility to clean the mess it left when I interrupted it and make a clean restart of this update?










share|improve this question
















Yesterday I started the upgrade from 12.10 to 13.04, but I interrupted it because it was taking too long. Now if I restart it, it doesn't proceed.



Is there any possibility to clean the mess it left when I interrupted it and make a clean restart of this update?







upgrade






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Sep 3 '16 at 14:39









Zanna

50.7k13135241




50.7k13135241










asked Sep 17 '13 at 14:13









DaveDave

253139




253139













  • There must be a way to a) delete all temporary data he stored for the last trial or b) tell him to start again. The simple way "just go ahead where you were interrupted" does not seem to work!

    – Dave
    Sep 17 '13 at 14:33






  • 1





    I'm not sure, but maybe 'sudo apt-get upgrade' and afterwards 'sudo apt-get update' could have fixed it!

    – Dave
    Sep 17 '13 at 19:08











  • I added instructions to my answer for how to delete all the download packages. As for the upgrade/update, usually you want to do it the other way around: "sudo apt-get update && sudo-apt-get upgrade" (you can do it on one line--the '&&' means the second command will only run if the first succeeds).

    – Lambart
    Sep 17 '13 at 19:36



















  • There must be a way to a) delete all temporary data he stored for the last trial or b) tell him to start again. The simple way "just go ahead where you were interrupted" does not seem to work!

    – Dave
    Sep 17 '13 at 14:33






  • 1





    I'm not sure, but maybe 'sudo apt-get upgrade' and afterwards 'sudo apt-get update' could have fixed it!

    – Dave
    Sep 17 '13 at 19:08











  • I added instructions to my answer for how to delete all the download packages. As for the upgrade/update, usually you want to do it the other way around: "sudo apt-get update && sudo-apt-get upgrade" (you can do it on one line--the '&&' means the second command will only run if the first succeeds).

    – Lambart
    Sep 17 '13 at 19:36

















There must be a way to a) delete all temporary data he stored for the last trial or b) tell him to start again. The simple way "just go ahead where you were interrupted" does not seem to work!

– Dave
Sep 17 '13 at 14:33





There must be a way to a) delete all temporary data he stored for the last trial or b) tell him to start again. The simple way "just go ahead where you were interrupted" does not seem to work!

– Dave
Sep 17 '13 at 14:33




1




1





I'm not sure, but maybe 'sudo apt-get upgrade' and afterwards 'sudo apt-get update' could have fixed it!

– Dave
Sep 17 '13 at 19:08





I'm not sure, but maybe 'sudo apt-get upgrade' and afterwards 'sudo apt-get update' could have fixed it!

– Dave
Sep 17 '13 at 19:08













I added instructions to my answer for how to delete all the download packages. As for the upgrade/update, usually you want to do it the other way around: "sudo apt-get update && sudo-apt-get upgrade" (you can do it on one line--the '&&' means the second command will only run if the first succeeds).

– Lambart
Sep 17 '13 at 19:36





I added instructions to my answer for how to delete all the download packages. As for the upgrade/update, usually you want to do it the other way around: "sudo apt-get update && sudo-apt-get upgrade" (you can do it on one line--the '&&' means the second command will only run if the first succeeds).

– Lambart
Sep 17 '13 at 19:36










3 Answers
3






active

oldest

votes


















46














Try these steps, from the command line:



Fix broken dependencies:



$ sudo apt-get install -f


If it still doesn't work, try this to fix/reconfigure the existing, unpacked-but-not-yet-configured packages:



$ sudo dpkg --configure -a


Then try the upgrade again.



If it fails again, you may want to delete all the already- downloaded packages (they should be stored in /var/cache/apt/archives), do



$ sudo apt-get clean


That will clean up the packages but if you're still stuck in some weird state, I'm not sure what else to suggest.



$ sudo apt-get autoremove -y


That will remove any now obsolete packages.



Of course, before you do anything you should back up any important contents of your /home/dave directory (or whatever your $HOME directory is).






share|improve this answer


























  • I did everything you wrote here. Thanks for the detailed advice! But I'm afraid the GUI-Software-Updater still fails. The only way I get him to do anything is via terminal, but that doesn't change my computer being stuck in some weird state.

    – Dave
    Sep 18 '13 at 14:08











  • Sure, sorry nothing worked. I found this thread yesterday which mentions a couple other angles. Maybe something in here? ubuntuforums.org/…

    – Lambart
    Sep 18 '13 at 17:12











  • Thank you very much for your help! Didn't give up and than, after a couple of trials in altering steps, I got it to work! Your code did fix the problem.

    – Dave
    Sep 19 '13 at 13:21






  • 2





    confirm that sudo apt-get install -f restarted dpkg for me. my upgrade was interrupted when network connection dropped. prob should use screen when upgrading remotely, which I thought ubuntu did at one point...

    – lukewendling
    Mar 9 '14 at 2:26






  • 4





    do-release-upgrade does start a screen session (with screen escape character ^space), but if the parent do-release-upgrade process dies, that might still kill the whole thing. Be careful about hitting ^c if you start a subshell to poke at a modified conffile, I ran into a problem with that: bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/…

    – Peter Cordes
    Jul 18 '14 at 3:18



















48














It appears that sudo screen -D -r will reconnect to a disconnected install in a 12.04 to 16.04 upgrade. This means no killing of packages or anything like that. This assumes that you didn't actively stop the upgrade, just lost access to the session.






share|improve this answer





















  • 5





    Even the "do-release-upgrade" from 14.04LTS to 16.04LTS use screen

    – Ivan Buttinoni
    Mar 5 '17 at 22:35











  • perfect - worked - thank you +1

    – bshea
    Apr 21 '17 at 1:12






  • 2





    Works on 17.10 -> 18.04 LTS!

    – Preston Lee
    May 15 '18 at 23:20






  • 1





    I was doing do-release-upgrade over x2go which was probably a bad idea, since remote screen packages get hosed in the process. This saved me.

    – endolith
    Aug 19 '18 at 3:05



















1














My 16.04 to 18.04 upgrade had interrupted as I had stopped the process by mistake. I guess the process was towards the end (installing wifi packages). Nothing of above worked and kept giving "dpkg fronend is locked by another process". A system reboot followed by



$ sudo dpkg --configure -a


resumed the process and completed upgrade to 18.04 successfully.






share|improve this answer























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    3 Answers
    3






    active

    oldest

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    3 Answers
    3






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    46














    Try these steps, from the command line:



    Fix broken dependencies:



    $ sudo apt-get install -f


    If it still doesn't work, try this to fix/reconfigure the existing, unpacked-but-not-yet-configured packages:



    $ sudo dpkg --configure -a


    Then try the upgrade again.



    If it fails again, you may want to delete all the already- downloaded packages (they should be stored in /var/cache/apt/archives), do



    $ sudo apt-get clean


    That will clean up the packages but if you're still stuck in some weird state, I'm not sure what else to suggest.



    $ sudo apt-get autoremove -y


    That will remove any now obsolete packages.



    Of course, before you do anything you should back up any important contents of your /home/dave directory (or whatever your $HOME directory is).






    share|improve this answer


























    • I did everything you wrote here. Thanks for the detailed advice! But I'm afraid the GUI-Software-Updater still fails. The only way I get him to do anything is via terminal, but that doesn't change my computer being stuck in some weird state.

      – Dave
      Sep 18 '13 at 14:08











    • Sure, sorry nothing worked. I found this thread yesterday which mentions a couple other angles. Maybe something in here? ubuntuforums.org/…

      – Lambart
      Sep 18 '13 at 17:12











    • Thank you very much for your help! Didn't give up and than, after a couple of trials in altering steps, I got it to work! Your code did fix the problem.

      – Dave
      Sep 19 '13 at 13:21






    • 2





      confirm that sudo apt-get install -f restarted dpkg for me. my upgrade was interrupted when network connection dropped. prob should use screen when upgrading remotely, which I thought ubuntu did at one point...

      – lukewendling
      Mar 9 '14 at 2:26






    • 4





      do-release-upgrade does start a screen session (with screen escape character ^space), but if the parent do-release-upgrade process dies, that might still kill the whole thing. Be careful about hitting ^c if you start a subshell to poke at a modified conffile, I ran into a problem with that: bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/…

      – Peter Cordes
      Jul 18 '14 at 3:18
















    46














    Try these steps, from the command line:



    Fix broken dependencies:



    $ sudo apt-get install -f


    If it still doesn't work, try this to fix/reconfigure the existing, unpacked-but-not-yet-configured packages:



    $ sudo dpkg --configure -a


    Then try the upgrade again.



    If it fails again, you may want to delete all the already- downloaded packages (they should be stored in /var/cache/apt/archives), do



    $ sudo apt-get clean


    That will clean up the packages but if you're still stuck in some weird state, I'm not sure what else to suggest.



    $ sudo apt-get autoremove -y


    That will remove any now obsolete packages.



    Of course, before you do anything you should back up any important contents of your /home/dave directory (or whatever your $HOME directory is).






    share|improve this answer


























    • I did everything you wrote here. Thanks for the detailed advice! But I'm afraid the GUI-Software-Updater still fails. The only way I get him to do anything is via terminal, but that doesn't change my computer being stuck in some weird state.

      – Dave
      Sep 18 '13 at 14:08











    • Sure, sorry nothing worked. I found this thread yesterday which mentions a couple other angles. Maybe something in here? ubuntuforums.org/…

      – Lambart
      Sep 18 '13 at 17:12











    • Thank you very much for your help! Didn't give up and than, after a couple of trials in altering steps, I got it to work! Your code did fix the problem.

      – Dave
      Sep 19 '13 at 13:21






    • 2





      confirm that sudo apt-get install -f restarted dpkg for me. my upgrade was interrupted when network connection dropped. prob should use screen when upgrading remotely, which I thought ubuntu did at one point...

      – lukewendling
      Mar 9 '14 at 2:26






    • 4





      do-release-upgrade does start a screen session (with screen escape character ^space), but if the parent do-release-upgrade process dies, that might still kill the whole thing. Be careful about hitting ^c if you start a subshell to poke at a modified conffile, I ran into a problem with that: bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/…

      – Peter Cordes
      Jul 18 '14 at 3:18














    46












    46








    46







    Try these steps, from the command line:



    Fix broken dependencies:



    $ sudo apt-get install -f


    If it still doesn't work, try this to fix/reconfigure the existing, unpacked-but-not-yet-configured packages:



    $ sudo dpkg --configure -a


    Then try the upgrade again.



    If it fails again, you may want to delete all the already- downloaded packages (they should be stored in /var/cache/apt/archives), do



    $ sudo apt-get clean


    That will clean up the packages but if you're still stuck in some weird state, I'm not sure what else to suggest.



    $ sudo apt-get autoremove -y


    That will remove any now obsolete packages.



    Of course, before you do anything you should back up any important contents of your /home/dave directory (or whatever your $HOME directory is).






    share|improve this answer















    Try these steps, from the command line:



    Fix broken dependencies:



    $ sudo apt-get install -f


    If it still doesn't work, try this to fix/reconfigure the existing, unpacked-but-not-yet-configured packages:



    $ sudo dpkg --configure -a


    Then try the upgrade again.



    If it fails again, you may want to delete all the already- downloaded packages (they should be stored in /var/cache/apt/archives), do



    $ sudo apt-get clean


    That will clean up the packages but if you're still stuck in some weird state, I'm not sure what else to suggest.



    $ sudo apt-get autoremove -y


    That will remove any now obsolete packages.



    Of course, before you do anything you should back up any important contents of your /home/dave directory (or whatever your $HOME directory is).







    share|improve this answer














    share|improve this answer



    share|improve this answer








    edited Sep 1 '16 at 11:30









    flob

    23328




    23328










    answered Sep 17 '13 at 19:30









    LambartLambart

    1,8711624




    1,8711624













    • I did everything you wrote here. Thanks for the detailed advice! But I'm afraid the GUI-Software-Updater still fails. The only way I get him to do anything is via terminal, but that doesn't change my computer being stuck in some weird state.

      – Dave
      Sep 18 '13 at 14:08











    • Sure, sorry nothing worked. I found this thread yesterday which mentions a couple other angles. Maybe something in here? ubuntuforums.org/…

      – Lambart
      Sep 18 '13 at 17:12











    • Thank you very much for your help! Didn't give up and than, after a couple of trials in altering steps, I got it to work! Your code did fix the problem.

      – Dave
      Sep 19 '13 at 13:21






    • 2





      confirm that sudo apt-get install -f restarted dpkg for me. my upgrade was interrupted when network connection dropped. prob should use screen when upgrading remotely, which I thought ubuntu did at one point...

      – lukewendling
      Mar 9 '14 at 2:26






    • 4





      do-release-upgrade does start a screen session (with screen escape character ^space), but if the parent do-release-upgrade process dies, that might still kill the whole thing. Be careful about hitting ^c if you start a subshell to poke at a modified conffile, I ran into a problem with that: bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/…

      – Peter Cordes
      Jul 18 '14 at 3:18



















    • I did everything you wrote here. Thanks for the detailed advice! But I'm afraid the GUI-Software-Updater still fails. The only way I get him to do anything is via terminal, but that doesn't change my computer being stuck in some weird state.

      – Dave
      Sep 18 '13 at 14:08











    • Sure, sorry nothing worked. I found this thread yesterday which mentions a couple other angles. Maybe something in here? ubuntuforums.org/…

      – Lambart
      Sep 18 '13 at 17:12











    • Thank you very much for your help! Didn't give up and than, after a couple of trials in altering steps, I got it to work! Your code did fix the problem.

      – Dave
      Sep 19 '13 at 13:21






    • 2





      confirm that sudo apt-get install -f restarted dpkg for me. my upgrade was interrupted when network connection dropped. prob should use screen when upgrading remotely, which I thought ubuntu did at one point...

      – lukewendling
      Mar 9 '14 at 2:26






    • 4





      do-release-upgrade does start a screen session (with screen escape character ^space), but if the parent do-release-upgrade process dies, that might still kill the whole thing. Be careful about hitting ^c if you start a subshell to poke at a modified conffile, I ran into a problem with that: bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/…

      – Peter Cordes
      Jul 18 '14 at 3:18

















    I did everything you wrote here. Thanks for the detailed advice! But I'm afraid the GUI-Software-Updater still fails. The only way I get him to do anything is via terminal, but that doesn't change my computer being stuck in some weird state.

    – Dave
    Sep 18 '13 at 14:08





    I did everything you wrote here. Thanks for the detailed advice! But I'm afraid the GUI-Software-Updater still fails. The only way I get him to do anything is via terminal, but that doesn't change my computer being stuck in some weird state.

    – Dave
    Sep 18 '13 at 14:08













    Sure, sorry nothing worked. I found this thread yesterday which mentions a couple other angles. Maybe something in here? ubuntuforums.org/…

    – Lambart
    Sep 18 '13 at 17:12





    Sure, sorry nothing worked. I found this thread yesterday which mentions a couple other angles. Maybe something in here? ubuntuforums.org/…

    – Lambart
    Sep 18 '13 at 17:12













    Thank you very much for your help! Didn't give up and than, after a couple of trials in altering steps, I got it to work! Your code did fix the problem.

    – Dave
    Sep 19 '13 at 13:21





    Thank you very much for your help! Didn't give up and than, after a couple of trials in altering steps, I got it to work! Your code did fix the problem.

    – Dave
    Sep 19 '13 at 13:21




    2




    2





    confirm that sudo apt-get install -f restarted dpkg for me. my upgrade was interrupted when network connection dropped. prob should use screen when upgrading remotely, which I thought ubuntu did at one point...

    – lukewendling
    Mar 9 '14 at 2:26





    confirm that sudo apt-get install -f restarted dpkg for me. my upgrade was interrupted when network connection dropped. prob should use screen when upgrading remotely, which I thought ubuntu did at one point...

    – lukewendling
    Mar 9 '14 at 2:26




    4




    4





    do-release-upgrade does start a screen session (with screen escape character ^space), but if the parent do-release-upgrade process dies, that might still kill the whole thing. Be careful about hitting ^c if you start a subshell to poke at a modified conffile, I ran into a problem with that: bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/…

    – Peter Cordes
    Jul 18 '14 at 3:18





    do-release-upgrade does start a screen session (with screen escape character ^space), but if the parent do-release-upgrade process dies, that might still kill the whole thing. Be careful about hitting ^c if you start a subshell to poke at a modified conffile, I ran into a problem with that: bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/…

    – Peter Cordes
    Jul 18 '14 at 3:18













    48














    It appears that sudo screen -D -r will reconnect to a disconnected install in a 12.04 to 16.04 upgrade. This means no killing of packages or anything like that. This assumes that you didn't actively stop the upgrade, just lost access to the session.






    share|improve this answer





















    • 5





      Even the "do-release-upgrade" from 14.04LTS to 16.04LTS use screen

      – Ivan Buttinoni
      Mar 5 '17 at 22:35











    • perfect - worked - thank you +1

      – bshea
      Apr 21 '17 at 1:12






    • 2





      Works on 17.10 -> 18.04 LTS!

      – Preston Lee
      May 15 '18 at 23:20






    • 1





      I was doing do-release-upgrade over x2go which was probably a bad idea, since remote screen packages get hosed in the process. This saved me.

      – endolith
      Aug 19 '18 at 3:05
















    48














    It appears that sudo screen -D -r will reconnect to a disconnected install in a 12.04 to 16.04 upgrade. This means no killing of packages or anything like that. This assumes that you didn't actively stop the upgrade, just lost access to the session.






    share|improve this answer





















    • 5





      Even the "do-release-upgrade" from 14.04LTS to 16.04LTS use screen

      – Ivan Buttinoni
      Mar 5 '17 at 22:35











    • perfect - worked - thank you +1

      – bshea
      Apr 21 '17 at 1:12






    • 2





      Works on 17.10 -> 18.04 LTS!

      – Preston Lee
      May 15 '18 at 23:20






    • 1





      I was doing do-release-upgrade over x2go which was probably a bad idea, since remote screen packages get hosed in the process. This saved me.

      – endolith
      Aug 19 '18 at 3:05














    48












    48








    48







    It appears that sudo screen -D -r will reconnect to a disconnected install in a 12.04 to 16.04 upgrade. This means no killing of packages or anything like that. This assumes that you didn't actively stop the upgrade, just lost access to the session.






    share|improve this answer















    It appears that sudo screen -D -r will reconnect to a disconnected install in a 12.04 to 16.04 upgrade. This means no killing of packages or anything like that. This assumes that you didn't actively stop the upgrade, just lost access to the session.







    share|improve this answer














    share|improve this answer



    share|improve this answer








    edited May 2 '18 at 14:26

























    answered Sep 11 '14 at 3:06









    flickerflyflickerfly

    4,83762043




    4,83762043








    • 5





      Even the "do-release-upgrade" from 14.04LTS to 16.04LTS use screen

      – Ivan Buttinoni
      Mar 5 '17 at 22:35











    • perfect - worked - thank you +1

      – bshea
      Apr 21 '17 at 1:12






    • 2





      Works on 17.10 -> 18.04 LTS!

      – Preston Lee
      May 15 '18 at 23:20






    • 1





      I was doing do-release-upgrade over x2go which was probably a bad idea, since remote screen packages get hosed in the process. This saved me.

      – endolith
      Aug 19 '18 at 3:05














    • 5





      Even the "do-release-upgrade" from 14.04LTS to 16.04LTS use screen

      – Ivan Buttinoni
      Mar 5 '17 at 22:35











    • perfect - worked - thank you +1

      – bshea
      Apr 21 '17 at 1:12






    • 2





      Works on 17.10 -> 18.04 LTS!

      – Preston Lee
      May 15 '18 at 23:20






    • 1





      I was doing do-release-upgrade over x2go which was probably a bad idea, since remote screen packages get hosed in the process. This saved me.

      – endolith
      Aug 19 '18 at 3:05








    5




    5





    Even the "do-release-upgrade" from 14.04LTS to 16.04LTS use screen

    – Ivan Buttinoni
    Mar 5 '17 at 22:35





    Even the "do-release-upgrade" from 14.04LTS to 16.04LTS use screen

    – Ivan Buttinoni
    Mar 5 '17 at 22:35













    perfect - worked - thank you +1

    – bshea
    Apr 21 '17 at 1:12





    perfect - worked - thank you +1

    – bshea
    Apr 21 '17 at 1:12




    2




    2





    Works on 17.10 -> 18.04 LTS!

    – Preston Lee
    May 15 '18 at 23:20





    Works on 17.10 -> 18.04 LTS!

    – Preston Lee
    May 15 '18 at 23:20




    1




    1





    I was doing do-release-upgrade over x2go which was probably a bad idea, since remote screen packages get hosed in the process. This saved me.

    – endolith
    Aug 19 '18 at 3:05





    I was doing do-release-upgrade over x2go which was probably a bad idea, since remote screen packages get hosed in the process. This saved me.

    – endolith
    Aug 19 '18 at 3:05











    1














    My 16.04 to 18.04 upgrade had interrupted as I had stopped the process by mistake. I guess the process was towards the end (installing wifi packages). Nothing of above worked and kept giving "dpkg fronend is locked by another process". A system reboot followed by



    $ sudo dpkg --configure -a


    resumed the process and completed upgrade to 18.04 successfully.






    share|improve this answer




























      1














      My 16.04 to 18.04 upgrade had interrupted as I had stopped the process by mistake. I guess the process was towards the end (installing wifi packages). Nothing of above worked and kept giving "dpkg fronend is locked by another process". A system reboot followed by



      $ sudo dpkg --configure -a


      resumed the process and completed upgrade to 18.04 successfully.






      share|improve this answer


























        1












        1








        1







        My 16.04 to 18.04 upgrade had interrupted as I had stopped the process by mistake. I guess the process was towards the end (installing wifi packages). Nothing of above worked and kept giving "dpkg fronend is locked by another process". A system reboot followed by



        $ sudo dpkg --configure -a


        resumed the process and completed upgrade to 18.04 successfully.






        share|improve this answer













        My 16.04 to 18.04 upgrade had interrupted as I had stopped the process by mistake. I guess the process was towards the end (installing wifi packages). Nothing of above worked and kept giving "dpkg fronend is locked by another process". A system reboot followed by



        $ sudo dpkg --configure -a


        resumed the process and completed upgrade to 18.04 successfully.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Jan 13 at 18:13









        SDQTSDQT

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