Had same issue with 14.04 to 16.04 upgrade, I had i386 and amd64 so this worked
for me, just doing amd64 gave me an error:
wget
http://mirrors.kernel.org/ubuntu/pool/main/d/dpkg/dpkg_1.18.4ubuntu1_amd64.deb
ar -x dpkg_1.18.4ubuntu1_amd64.deb
tar -xvf data.tar.gz
wget
Update on my previous comment (#4): I checked what "pam-auth-update
--force" did (it backs up the old versions), and ended up accepting all
its changes so that I will hopefully never have this problem going
forward. Because it added pam_systemd to common-session I have now
removed the line I
I had a similar issue. This error in syslog finally lead me to my
solution:
(EE) systemd-logind: failed to get session: PID 10023 does not belong to
any known session
As a result of that error, gdm-x-session fails further along in the gdm3
start up process and aborts:
