unity-settings-daemon crashed with SIGSEGV in up_exported_daemon_get_lid_is_closed()

unity crashes at login. using two video cards, both ATI; 2600 {radeon} and R9 380 {amdgpu}.
xenial beat 2, 16.04 AMD.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: unity-settings-daemon 15.04.1+16.04.20160209-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
Uname: Linux 4.4.0-15-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CrashCounter: 1
CurrentDesktop: Unity
Date: Wed Mar 30 23:14:29 2016
ExecutablePath: /usr/lib/unity-settings-daemon/unity-settings-daemon
ProcCmdline: /usr/lib/unity-settings-daemon/unity-settings-daemon
ProcEnviron:
 PATH=(custom, no user)
 SHELL=/bin/bash
 LANG=en_US.UTF-8
 LANGUAGE=en_US
 XDG_RUNTIME_DIR=<set>
SegvAnalysis:
 Segfault happened at: 0x7f00b2bcce69 <up_exported_daemon_get_lid_is_closed+9>: mov (%rbx),%rdi
 PC (0x7f00b2bcce69) ok
 source "(%rbx)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity-settings-daemon
StacktraceTop:
 up_exported_daemon_get_lid_is_closed () from /usr/lib/x86_64-linux-gnu/libupower-glib.so.3
 gsd_power_manager_start () from /usr/lib/unity-settings-daemon-1.0/libpower.so
 ?? () from /usr/lib/unity-settings-daemon-1.0/libpower.so
 gnome_settings_plugin_info_activate ()
 ?? ()
Title: unity-settings-daemon crashed with SIGSEGV in up_exported_daemon_get_lid_is_closed()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo