Xorg/Xwayland crashed with signal 7 in XkbCopyKeymap() from XkbCopyKeymap() from XkbDeviceApplyKeymap() from CopyKeyClass() from DeepCopyKeyboardClasses()

[Neal McBurnett]

https://errors.ubuntu.com/problem/d0aed32d6455f555b4852947fb0ca074a064c8db

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Many times over the last few weeks, when I open my laptop after a sleep, I'm eventually greeted not by the desktop, but by a login screen, because Xorg has crashed.

I'm running bionic on a Lenovo ThinkPad X230, often with two external monitors.
Nothing else unusual offhand.

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: xserver-xorg-core 2:1.19.6-1ubuntu4
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
Uname: Linux 4.15.0-22-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Fri Jun 1 10:16:07 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExecutablePath: /usr/lib/xorg/Xorg
ExecutableTimestamp: 1523633505
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo 3rd Gen Core processor Graphics Controller [17aa:2203]
InstallationDate: Installed on 2018-05-01 (30 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: LENOVO 343522U
ProcCmdline: /usr/lib/xorg/Xorg vt2 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -background none -noreset -keeptty -verbose 3
ProcCwd: /home/neal
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-22-generic root=UUID=51612d4c-57c8-45d0-b308-86df52604f07 ro
Signal: 7
SourcePackage: xorg-server
StacktraceTop:
 ?? ()
 XkbDeviceApplyKeymap ()
 ?? ()
 ?? ()
 ?? ()
Title: Xorg crashed with signal 7 in XkbDeviceApplyKeymap()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo wireshark
dmi.bios.date: 02/12/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: GCETA1WW (2.61 )
dmi.board.asset.tag: Not Available
dmi.board.name: 343522U
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGCETA1WW(2.61):bd02/12/2015:svnLENOVO:pn343522U:pvrThinkPadX230Tablet:rvnLENOVO:rn343522U:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.family: ThinkPad X230 Tablet
dmi.product.name: 343522U
dmi.product.version: ThinkPad X230 Tablet
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc5-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc5-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

[Apport retracing service (apport)]

StacktraceTop:
 XkbCopyKeymap (dst=0x55cecfc1a7a0, src=0x55cecf406880) at ../../../../xkb/xkbUtils.c:1957
 XkbCopyKeymap (src=<optimized out>, dst=<optimized out>) at ../../../../xkb/xkbUtils.c:1965
 XkbDeviceApplyKeymap (dst=dst@entry=0x55cecf3a2b90, desc=<optimized out>) at ../../../../xkb/xkbUtils.c:2025
 CopyKeyClass (device=device@entry=0x55cecf405630, master=master@entry=0x55cecf3a2b90) at ../../../../Xi/exevents.c:233
 DeepCopyKeyboardClasses (to=0x55cecf3a2b90, from=0x55cecf405630) at ../../../../Xi/exevents.c:427

[Daniel van Vugt (vanvugt)]

Sounds related to bug 1762801.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Also tracking in:
https://errors.ubuntu.com/problem/d0aed32d6455f555b4852947fb0ca074a064c8db