unity-settings-daemon crashed with signal 5 in g_settings_get_enum()

[Achim Behrens]

ubuntu 17.10
after yesterdays updates lightdm doesnt work anymore (only black screen with cursor, change to tty1 doesnt work).
started with systemd.unit=multi-user.target and started gdm from there (sudo systemctl start gdm). now gtk is broken in unity.

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: unity-settings-daemon 15.04.1+17.10.20171003-0ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-15.16-generic 4.13.4
Uname: Linux 4.13.0-15-generic x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
Date: Thu Oct 12 11:37:57 2017
ExecutablePath: /usr/lib/unity-settings-daemon/unity-settings-daemon
InstallationDate: Installed on 2013-09-28 (1475 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20130925.1)
ProcCmdline: /usr/lib/unity-settings-daemon/unity-settings-daemon
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/false
Signal: 5
SourcePackage: unity-settings-daemon
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 g_settings_get_enum () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 ?? () from /usr/lib/unity-settings-daemon-1.0/libpower.so
 gsd_power_manager_start () from /usr/lib/unity-settings-daemon-1.0/libpower.so
Title: unity-settings-daemon crashed with signal 5 in g_settings_get_enum()
UpgradeStatus: Upgraded to artful on 2017-06-30 (104 days ago)
UserGroups:

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1722920, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.