Error while upgrading 17.10 to 18.04 [duplicate]

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  • gksu: Gtk-WARNING **: cannot open display: :0

    3 answers



  • upgrade from 11.10 to 12.04 - No upgrade option available in update manager

    2 answers



I got following error while running sudo update-manager -d command. Why this error occurred? And how to solve it?



sudo update-manager -d
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused

(update-manager:2298): Gtk-WARNING **: cannot open display: :0



upgrade 18.04




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marked as duplicate by L. D. James, N0rbert, karel, Eric Carvalho, Fabby Apr 27 at 20:41


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.














  • What i wonder is, why you try to update to the development version, which might actually not exist anymore because of today is release day?
    – Videonauth
    Apr 26 at 17:59










  • @Videonauth just for learning purpose. I followed this steps . itsfoss.com/upgrade-ubuntu-version
    – Kiran Shahi
    Apr 26 at 18:01






  • 4




    You shouldn't use update-manager -d to upgrade Ubuntu to 18.04 manually. You should use do-release-upgrade on the command line to upgrade, at least once 18.04 is released. However, 18.04 is not yet officially released at this moment, so your results in upgrading might vary.
    – Thomas Ward♦
    Apr 26 at 18:02







  • 1




    @ThomasWard Thank you.
    – Kiran Shahi
    Apr 26 at 18:06














up vote
2
down vote

favorite













This question already has an answer here:



  • gksu: Gtk-WARNING **: cannot open display: :0

    3 answers



  • upgrade from 11.10 to 12.04 - No upgrade option available in update manager

    2 answers



I got following error while running sudo update-manager -d command. Why this error occurred? And how to solve it?



sudo update-manager -d
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused

(update-manager:2298): Gtk-WARNING **: cannot open display: :0



upgrade 18.04




share|improve this question














marked as duplicate by L. D. James, N0rbert, karel, Eric Carvalho, Fabby Apr 27 at 20:41


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.














  • What i wonder is, why you try to update to the development version, which might actually not exist anymore because of today is release day?
    – Videonauth
    Apr 26 at 17:59










  • @Videonauth just for learning purpose. I followed this steps . itsfoss.com/upgrade-ubuntu-version
    – Kiran Shahi
    Apr 26 at 18:01






  • 4




    You shouldn't use update-manager -d to upgrade Ubuntu to 18.04 manually. You should use do-release-upgrade on the command line to upgrade, at least once 18.04 is released. However, 18.04 is not yet officially released at this moment, so your results in upgrading might vary.
    – Thomas Ward♦
    Apr 26 at 18:02







  • 1




    @ThomasWard Thank you.
    – Kiran Shahi
    Apr 26 at 18:06












up vote
2
down vote

favorite









up vote
2
down vote

favorite












This question already has an answer here:



  • gksu: Gtk-WARNING **: cannot open display: :0

    3 answers



  • upgrade from 11.10 to 12.04 - No upgrade option available in update manager

    2 answers



I got following error while running sudo update-manager -d command. Why this error occurred? And how to solve it?



sudo update-manager -d
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused

(update-manager:2298): Gtk-WARNING **: cannot open display: :0



upgrade 18.04




share|improve this question















This question already has an answer here:



  • gksu: Gtk-WARNING **: cannot open display: :0

    3 answers



  • upgrade from 11.10 to 12.04 - No upgrade option available in update manager

    2 answers



I got following error while running sudo update-manager -d command. Why this error occurred? And how to solve it?



sudo update-manager -d
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused

(update-manager:2298): Gtk-WARNING **: cannot open display: :0




This question already has an answer here:



  • gksu: Gtk-WARNING **: cannot open display: :0

    3 answers



  • upgrade from 11.10 to 12.04 - No upgrade option available in update manager

    2 answers





upgrade 18.04





share|improve this question













share|improve this question




share|improve this question








edited May 1 at 4:24

























asked Apr 26 at 17:57









Kiran Shahi

204113




204113




marked as duplicate by L. D. James, N0rbert, karel, Eric Carvalho, Fabby Apr 27 at 20:41


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.






marked as duplicate by L. D. James, N0rbert, karel, Eric Carvalho, Fabby Apr 27 at 20:41


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.













  • What i wonder is, why you try to update to the development version, which might actually not exist anymore because of today is release day?
    – Videonauth
    Apr 26 at 17:59










  • @Videonauth just for learning purpose. I followed this steps . itsfoss.com/upgrade-ubuntu-version
    – Kiran Shahi
    Apr 26 at 18:01






  • 4




    You shouldn't use update-manager -d to upgrade Ubuntu to 18.04 manually. You should use do-release-upgrade on the command line to upgrade, at least once 18.04 is released. However, 18.04 is not yet officially released at this moment, so your results in upgrading might vary.
    – Thomas Ward♦
    Apr 26 at 18:02







  • 1




    @ThomasWard Thank you.
    – Kiran Shahi
    Apr 26 at 18:06
















  • What i wonder is, why you try to update to the development version, which might actually not exist anymore because of today is release day?
    – Videonauth
    Apr 26 at 17:59










  • @Videonauth just for learning purpose. I followed this steps . itsfoss.com/upgrade-ubuntu-version
    – Kiran Shahi
    Apr 26 at 18:01






  • 4




    You shouldn't use update-manager -d to upgrade Ubuntu to 18.04 manually. You should use do-release-upgrade on the command line to upgrade, at least once 18.04 is released. However, 18.04 is not yet officially released at this moment, so your results in upgrading might vary.
    – Thomas Ward♦
    Apr 26 at 18:02







  • 1




    @ThomasWard Thank you.
    – Kiran Shahi
    Apr 26 at 18:06















What i wonder is, why you try to update to the development version, which might actually not exist anymore because of today is release day?
– Videonauth
Apr 26 at 17:59




What i wonder is, why you try to update to the development version, which might actually not exist anymore because of today is release day?
– Videonauth
Apr 26 at 17:59












@Videonauth just for learning purpose. I followed this steps . itsfoss.com/upgrade-ubuntu-version
– Kiran Shahi
Apr 26 at 18:01




@Videonauth just for learning purpose. I followed this steps . itsfoss.com/upgrade-ubuntu-version
– Kiran Shahi
Apr 26 at 18:01




4




4




You shouldn't use update-manager -d to upgrade Ubuntu to 18.04 manually. You should use do-release-upgrade on the command line to upgrade, at least once 18.04 is released. However, 18.04 is not yet officially released at this moment, so your results in upgrading might vary.
– Thomas Ward♦
Apr 26 at 18:02





You shouldn't use update-manager -d to upgrade Ubuntu to 18.04 manually. You should use do-release-upgrade on the command line to upgrade, at least once 18.04 is released. However, 18.04 is not yet officially released at this moment, so your results in upgrading might vary.
– Thomas Ward♦
Apr 26 at 18:02





1




1




@ThomasWard Thank you.
– Kiran Shahi
Apr 26 at 18:06




@ThomasWard Thank you.
– Kiran Shahi
Apr 26 at 18:06















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