I was trying several desktop environments and after a while I found a crash file in /var/crash/.
ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gconf2 3.2.6-4ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 29 15:26:52 2017
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/gsettings-data-convert
ProcCmdline: gsettings-data-convert
Signal: 5
SourcePackage: gconf
StacktraceTop:
g_settings_schema_get_value (schema=0x55b3d5780d40, key=0x55b3d57a71f0 "auto-launch") at ../../../../gio/gsettingsschema.c:967
g_settings_schema_key_init (key=key@entry=0x7ffccfe31a80, schema=0x55b3d5780d40, name=name@entry=0x55b3d57a71f0 "auto-launch") at ../../../../gio/gsettingsschema.c:1246
g_settings_set_value (settings=settings@entry=0x55b3d5730170 [GSettings], key=key@entry=0x55b3d57a71f0 "auto-launch", value=0x55b3d57a7960) at ../../../../gio/gsettings.c:1563
g_settings_set (settings=0x55b3d5730170 [GSettings], key=0x55b3d57a71f0 "auto-launch", format=<optimized out>) at ../../../../gio/gsettings.c:1670
()
Title: gsettings-data-convert crashed with signal 5 in g_settings_schema_get_value()
UpgradeStatus: Upgraded to artful on 2017-09-29 (0 days ago)
UserGroups: adm cdrom dip fuse libvirt libvirtd lpadmin plugdev sambashare staff sudo
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 #945144, 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.