[Bug 1381457] Re: Ubunutu14.10:Installation fails with Debootstrap Error :Invalid Release signature (key id 40976EAF437D05B5)

[Launchpad Bug Tracker]

[Expired for debian-installer (Ubuntu) because there has been no
activity for 60 days.]

** Changed in: debian-installer (Ubuntu)
       Status: Incomplete => Expired

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Title:
  Ubunutu14.10:Installation fails with Debootstrap Error  :Invalid
  Release signature (key id 40976EAF437D05B5)

Status in debian-installer package in Ubuntu:
  Expired

Bug description:
  Problem Description
  ======================
  I was installing ubuntu 14.10 then after disk partitioning option installation failed with below error 


        ?????????????????? [!!] Install the base system ???????????????????
        ?                                                                 ?
    ?????                        Debootstrap Error                        ? ???
    ?   ? The following error occurred:                                   ?   ?
    ?   ?                                                                 ?   ?
    ?   ? Invalid Release signature (key id 40976EAF437D05B5)             ?   ?
    ? Ch?                                                                 ?   ?
    ?   ? Check /var/log/syslog or see virtual console 4 for the details. ?   ?
    ?????                                                                 ? ???
        ?     <Go Back>                                    <Continue>     ?
        ?                                                                 ?
        ???????????????????????????????????????????????????????????????????



      ?????????????????? [!!] Install the base system ???????????????????
        ?                                                                 ?
        ?                Failed to install the base system                ?
        ? The base system installation into /target/ failed.              ?
        ?                                                                 ?
        ? Check /var/log/syslog or see virtual console 4 for the details. ?
        ?                                                                 ?
        ?     <Go Back>                                    <Continue>     ?
        ?                                                                 ?
        ???????????????????????????????????????????????????????????????????



       ??????????????????? [!!] Install the base system ????????????????????
       ?                                                                   ?
       ?                     Installation step failed                      ?
       ? An installation step failed. You can try to run the failing item  ?
       ? again from the menu, or skip it and choose something else. The    ?
       ? failing step is: Install the base system                          ?
       ?                                                                   ?
       ?                            <Continue>                             ?
       ?                                                                   ?
       ?????????????????????????????????????????????????????????????????????


  
  I have attached /var/log/syslog file with this bug  .It allowed to proceed with installation so taking back the system and attaching the logs for debugging .

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