systemd-logind assert failure: error.c:319: Assertion failed in nih_error_get: context_stack != NULL

Initially presents as a 'hang' during bootup. Checking the upstart logs it looks like systemd-logind is failing.

I tried a few different approaches - and eventually found that installing cgmanager allowed the system to reach a x11 login

checking into the logs now I continue to see errors:

Removed session c1.
cgmanager: cgm_remove for controller=blkio, cgroup_path=user/115.user/c1.session, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=cpu, cgroup_path=user/115.user/c1.session, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=cpuacct, cgroup_path=user/115.user/c1.session, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=cpuset, cgroup_path=user/115.user/c1.session, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=devices, cgroup_path=user/115.user/c1.session, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=freezer, cgroup_path=user/115.user/c1.session, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=hugetlb, cgroup_path=user/115.user/c1.session, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=memory, cgroup_path=user/115.user/c1.session, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=perf_event, cgroup_path=user/115.user/c1.session, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=systemd, cgroup_path=user/115.user/c1.session, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=blkio, cgroup_path=user/115.user, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=cpu, cgroup_path=user/115.user, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=cpuacct, cgroup_path=user/115.user, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=cpuset, cgroup_path=user/115.user, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=devices, cgroup_path=user/115.user, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=freezer, cgroup_path=user/115.user, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=hugetlb, cgroup_path=user/115.user, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=memory, cgroup_path=user/115.user, recursive=1 failed: invalid request
cgmanager: cgm_remove for controller=perf_event, cgroup_path=user/115.user, recursive=1 failed: invalid request
Failed to issue method call: Unknown unit: <email address hidden>

but the system seems to working now.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: systemd-services 204-5ubuntu16
ProcVersionSignature: Ubuntu 3.13.0-22.44-generic 3.13.8
Uname: Linux 3.13.0-22-generic x86_64
ApportVersion: 2.14-0ubuntu1
Architecture: amd64
AssertionMessage: error.c:319: Assertion failed in nih_error_get: context_stack != NULL
Date: Thu Apr 3 18:18:23 2014
ExecutablePath: /lib/systemd/systemd-logind
InstallationDate: Installed on 2014-03-24 (10 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140323)
ProcCmdline: /lib/systemd/systemd-logind
ProcEnviron:
 PATH=(custom, no user)
 TERM=linux
Signal: 6
SourcePackage: systemd
StacktraceTop:
 nih_error_get () from /lib/x86_64-linux-gnu/libnih.so.1
 ?? ()
 ?? ()
 ?? ()
 ?? ()
Title: systemd-logind assert failure: error.c:319: Assertion failed in nih_error_get: context_stack != NULL
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: