[Bug 1828460] [NEW] DistUpgradeViewNonInteractive hangs

[Brian Murray]

Public bug reported:

The release upgrader hanged when upgrading from bionic to cosmic after I
responded to a conffile prompt:

2019-05-09 19:15:43,693 WARNING got a conffile-prompt from dpkg for file: '/etc/update-manager/release-upgrades'
2019-05-09 19:15:48,698 ERROR error 'a bytes-like object is required, not 'str'' when trying to write to the conffile

The error message comes from the conffile function in
DistUpdradeViewNonInteractive.

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

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/1828460

Title:
  DistUpgradeViewNonInteractive hangs

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

Bug description:
  The release upgrader hanged when upgrading from bionic to cosmic after
  I responded to a conffile prompt:

  2019-05-09 19:15:43,693 WARNING got a conffile-prompt from dpkg for file: '/etc/update-manager/release-upgrades'
  2019-05-09 19:15:48,698 ERROR error 'a bytes-like object is required, not 'str'' when trying to write to the conffile

  The error message comes from the conffile function in
  DistUpdradeViewNonInteractive.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1828460/+subscriptions