Public bug reported:
On upgrade from 14.04.05 to 16.04.2 using do-release-upgrade, I got this
error:
dpkg: cycle found while processing triggers:
chain of packages whose triggers are or may be responsible:
man-db -> systemd
packages' pending triggers which are or may be unresolvable:
ca-certificates: update-ca-certificates
man-db: /usr/share/man
systemd: /etc/init.d
dpkg: error processing package ca-certificates (--remove):
triggers looping, abandoned
ERROR: Cannot create report: [Errno 17] File exists:
'/var/crash/ca-certificates.0.crash'
Error in function:
Upgrade was not successful, lsb_release -a reported 16.04.02 but the
system was obviously not fully upgraded, and the network adapter was
disabled according to lshw. Couldn't get online to try and repair so
rolled back to a previous snapshot.
ubuntu-release-upgrader-core:
Installed: 1:0.220.9
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1700574
Title:
dpkg: error processing package ca-certificates
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