[xrandr]: gnome-settings-daemon crashed with SIGSEGV

[Alex Murray]

Crashed after docking my laptop (Lenovo X260) where the dock has 2 monitors attached.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: gnome-settings-daemon 3.20.1-2ubuntu1~ubuntu16.04.1 [origin: LP-PPA-gnome3-team-gnome3-staging]
ProcVersionSignature: Ubuntu 4.8.0-34.36~16.04.1-generic 4.8.11
Uname: Linux 4.8.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CrashCounter: 1
CurrentDesktop: GNOME
Date: Tue Feb 21 09:04:12 2017
ExecutablePath: /usr/lib/gnome-settings-daemon/gnome-settings-daemon
InstallationDate: Installed on 2017-02-07 (12 days ago)
InstallationMedia: Ubuntu-GNOME 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160720)
ProcCmdline: /usr/lib/gnome-settings-daemon/gnome-settings-daemon
ProcEnviron:
 LANGUAGE=en_AU:en
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f18a80d47fd: mov (%rax),%r12
 PC (0x7f18a80d47fd) ok
 source "(%rax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%r12" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-settings-daemon
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libgnome-desktop-3.so.12
 ?? () from /usr/lib/x86_64-linux-gnu/libgnome-desktop-3.so.12
 ?? () from /usr/lib/x86_64-linux-gnu/libgnome-desktop-3.so.12
 ?? () from /usr/lib/gnome-settings-daemon-3.0/libxrandr.so
 ?? () from /usr/lib/gnome-settings-daemon-3.0/libxrandr.so
Title: [xrandr]: gnome-settings-daemon crashed with SIGSEGV
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip libvirtd lpadmin plugdev sambashare sudo

[Ubuntu GNOME (ug-bot)]

StacktraceTop:
 real_assign_crtcs (screen=screen@entry=0x2108260, outputs=outputs@entry=0x2423330, assignment=assignment@entry=0x2448c30, error=error@entry=0x7ffde435a100) at gnome-rr-config.c:941
 crtc_assignment_new (screen=0x2108260, outputs=outputs@entry=0x2423330, error=error@entry=0x7ffde435a100) at gnome-rr-config.c:1068
 gnome_rr_config_apply_helper (config=config@entry=0x7f18940253d0, screen=<optimized out>, persistent=persistent@entry=0, error=error@entry=0x7ffde435a100) at gnome-rr-config.c:628
 gnome_rr_config_apply (config=config@entry=0x7f18940253d0, screen=<optimized out>, error=error@entry=0x7ffde435a100) at gnome-rr-config.c:650
 apply_configuration (manager=manager@entry=0x20dd230, config=0x7f18940253d0, timestamp=timestamp@entry=26805428) at gsd-xrandr-manager.c:347