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

appears at startup - only major known problem is no 4k monitor setting. Using 4k HDMI and DVI > VGA 1920x1080. GTX750ti.
Just works out of the box in Fedora 24a1-live and Win 10, 7. Tried a few things but no success.
This is straight install over Ubuntu 15.10 with only mods to grub default boot.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: unity-settings-daemon 15.04.1+16.04.20160209-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-16.32-generic 4.4.6
Uname: Linux 4.4.0-16-generic x86_64
ApportVersion: 2.20.1-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Sun Apr 3 15:29:23 2016
ExecutablePath: /usr/lib/unity-settings-daemon/unity-settings-daemon
InstallationDate: Installed on 2016-04-03 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323)
ProcCmdline: /usr/lib/unity-settings-daemon/unity-settings-daemon
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/false
SegvAnalysis:
 Segfault happened at: 0x7fd272199e69 <up_exported_daemon_get_lid_is_closed+9>: mov (%rbx),%rdi
 PC (0x7fd272199e69) 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)
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