Xorg crashed with SIGABRT in xf86platformProbe() from xf86BusProbe() from InitOutput() from dix_main() from __libc_start_main()

[AboAlfadl]

https://errors.ubuntu.com/problem/e62d193f8a871d8a404be58362b9c1a32852877d

---

in xf86BusProbe()

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: xserver-xorg-core 2:1.19.6-1ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-11.12-generic 4.15.5
Uname: Linux 4.15.0-11-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CrashCounter: 1
Date: Fri Mar 2 13:54:32 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExecutablePath: /usr/lib/xorg/Xorg
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation HD Graphics 5500 [8086:1616] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo HD Graphics 5500 [17aa:3824]
InstallationDate: Installed on 2015-12-14 (809 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: LENOVO 80K6
ProcCmdline: /usr/lib/xorg/Xorg :1 -configure
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-11-generic root=UUID=73fd1edc-d964-40d3-a1dd-b1ca4118cce6 ro quiet splash vt.handoff=1
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 ?? ()
 xf86BusProbe ()
 InitOutput ()
 ?? ()
 __libc_start_main (main=0x557c28f02b80, argc=3, argv=0x7ffe64d48138, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe64d48128) at ../csu/libc-start.c:310
Title: Xorg crashed with SIGABRT in xf86BusProbe()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 03/19/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: C2CN17WW(V1.03)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Lenovo Z51-70
dmi.board.vendor: LENOVO
dmi.board.version: No DPK
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo Z51-70
dmi.modalias: dmi:bvnLENOVO:bvrC2CN17WW(V1.03):bd03/19/2015:svnLENOVO:pn80K6:pvrLenovoZ51-70:rvnLENOVO:rnLenovoZ51-70:rvrNoDPK:cvnLENOVO:ct10:cvrLenovoZ51-70:
dmi.product.family: IDEAPAD
dmi.product.name: 80K6
dmi.product.version: Lenovo Z51-70
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.13.1+18.04.20180221.1-0ubuntu1
version.libdrm2: libdrm2 2.4.90-1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc4-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc4-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
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
xserver.bootTime: Sat Mar 3 00:27:10 2018
xserver.configfile: /root/xorg.conf.new
xserver.devices:

xserver.errors:
 dbus-core: error connecting to system bus: org.freedesktop.DBus.Error.FileNotFound (Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory)
 Server terminated with error (2). Closing log file.
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.19.6-1ubuntu2

[Apport retracing service (apport)]

StacktraceTop:
 xf86platformProbe () at ../../../../../../hw/xfree86/common/xf86platformBus.c:311
 xf86BusProbe () at ../../../../../../hw/xfree86/common/xf86Bus.c:226
 InitOutput (pScreenInfo=pScreenInfo@entry=0x557c2932e6c0 <screenInfo>, argc=argc@entry=3, argv=argv@entry=0x7ffe64d48138) at ../../../../../../hw/xfree86/common/xf86Init.c:462
 dix_main (argc=3, argv=0x7ffe64d48138, envp=<optimized out>) at ../../../../dix/main.c:197
 __libc_start_main (main=0x557c28f02b80 <main>, argc=3, argv=0x7ffe64d48138, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe64d48128) at ../csu/libc-start.c:310

[Launchpad Janitor (janitor)]

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

[Daniel van Vugt (vanvugt)]

Tracking in:
https://errors.ubuntu.com/problem/e62d193f8a871d8a404be58362b9c1a32852877d

[Paulo Marcel Coelho Aragão (marcelpaulo)]

A hypothesis was discussed in bug #1753012 that the root cause of this bug was in the kernel, specifically in blk-core.c. The patch was finally merged in kernel version 4.15.0-31-generic. I'm running on 4.15.0-32-generic but the bug is still happening:

1. Xorg starts to become unresponsive: it freezes, no input or output is processed. It stays like that for not longer than 1 minute.
2. On resuming from suspend, Xorg coredumps

On Aug 16th, my Xorg started to become unresponsive, and on aug 17th it coredumped when I resumed from suspend. I have the core file and the crash report: where should I send them to?