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[Bug 1521024] [NEW] Upgrade halts with invalid UPS low battery warning

 

Public bug reported:

In the midst of upgrading to Ubuntu Desktop 15.10 on 2 different
computers, each connected to different electrical circuit and a
different, separate UPS, a Critical Low Battery Warning was displayed,
followed shortly by a power-off shutdown. In both cases the installed
kernel was present in GRUB, but would not load. I was unable to start
any kernel normally in GRUB, but I was able to make a Recovery restart
with the previous kernel in GRUB and complete the upgrade.

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "apt-term.log"
   https://bugs.launchpad.net/bugs/1521024/+attachment/4527350/+files/apt-term.log

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https://bugs.launchpad.net/bugs/1521024

Title:
  Upgrade halts with invalid UPS low battery warning

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  In the midst of upgrading to Ubuntu Desktop 15.10 on 2 different
  computers, each connected to different electrical circuit and a
  different, separate UPS, a Critical Low Battery Warning was displayed,
  followed shortly by a power-off shutdown. In both cases the installed
  kernel was present in GRUB, but would not load. I was unable to start
  any kernel normally in GRUB, but I was able to make a Recovery restart
  with the previous kernel in GRUB and complete the upgrade.

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