I can confirm this is still an issue on Xenial LTS when upgrading to Bionic LTS.
I do an 'do-release-upgrade -d -f DistUpgradeViewNonInteractive' and I'm
prompted when the installation procedure comes to the user-changed etc-files.
Despite entering an answer, the installation then hangs and does
Created a topic thread about this looking for possible workarounds:
http://ubuntuforums.org/showthread.php?t=2265877
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Title:
trusty-utopic
It seems this is still an issue, I am tailing apt-term.log and I see:
Configuration file '/etc/sysctl.conf'^M
== Modified (by you or by a script) since installation.^M
== Package distributor has shipped an updated version.^M
What would you like to do about it ? Your options are:^M
Y or
Seems like a pretty serious issue. Any solution?
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Title:
trusty-utopic non-interactive upgrade outputs garbage, and is
interactive
To manage
The pages and pages of gibberish make it very hard to do the release
upgrade with the DistUpgradeViewNonInteractive command.
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Title:
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: update-manager-core (Ubuntu)
Status: New = Confirmed
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