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

Just rebooting. And the first time I open Firefox, the UI isn't what it should be.

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
CurrentDesktop: Unity
Date: Fri Apr 1 20:29:07 2016
ExecutablePath: /usr/lib/unity-settings-daemon/unity-settings-daemon
InstallationDate: Installed on 2016-03-25 (7 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)
 SHELL=/bin/bash
 LANG=es_ES.UTF-8
 LANGUAGE=es_ES
 XDG_RUNTIME_DIR=<set>
SegvAnalysis:
 Segfault happened at: 0x7f435c049e69 <up_exported_daemon_get_lid_is_closed+9>: mov (%rbx),%rdi
 PC (0x7f435c049e69) 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
upstart.unity-settings-daemon.log:
 (unity-settings-daemon:1697): Gdk-WARNING **: unity-settings-daemon: Fatal IO error 11 (Recurso no disponible temporalmente) on X server :0.

 (unity-settings-daemon:1677): libupower-glib-WARNING **: Couldn't connect to proxy: Error al llamar StartSereviceByName para org.freedesktop.UPower: GDBus.Error:org.freedesktop.DBus.Error.TimedOut: Failed to activate service 'org.freedesktop.UPower': timed out