gnome-shell crashed with SIGSEGV in meta_gpu_kms_apply_crtc_mode()

[Colan Schwartz]

Just got the crash pop-up; no idea what happened.

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.28.2-0ubuntu0.18.04.1
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Uname: Linux 4.15.0-23-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CurrentDesktop: GNOME-Greeter:GNOME
Date: Sat Jul 14 16:18:23 2018
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:

ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 LANGUAGE=en_CA:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
 SHELL=/bin/false
SegvAnalysis:
 Segfault happened at: 0x7f61c0a50dd7 <meta_gpu_kms_apply_crtc_mode+215>: mov 0x20(%rax),%rcx
 PC (0x7f61c0a50dd7) ok
 source "0x20(%rax)" (0x00000020) not located in a known VMA region (needed readable region)!
 destination "%rcx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 meta_gpu_kms_apply_crtc_mode () from /usr/lib/x86_64-linux-gnu/libmutter-2.so.0
 meta_renderer_native_finish_frame () from /usr/lib/x86_64-linux-gnu/libmutter-2.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/mutter/libmutter-clutter-2.so
 ?? () from /usr/lib/x86_64-linux-gnu/mutter/libmutter-clutter-2.so
 ?? () from /usr/lib/x86_64-linux-gnu/mutter/libmutter-clutter-2.so
Title: gnome-shell crashed with SIGSEGV in meta_gpu_kms_apply_crtc_mode()
UpgradeStatus: Upgraded to bionic on 2018-05-19 (56 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 #1754949, 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.