Xorg crashed with SIGABRT in xf86BusProbe()

[Paulo Marcel Coelho Aragão]

Every night I suspend my laptop and resume it in the morning. At least once a week, the X server crashes with SIGBUS when resuming from suspend.

I scoured systemd journals and all logs under /var/log, and this was the only suspicious message I found:

[ 59358.134] (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied

As my graphics card uses driver i915, I installed xserver-xorg-video-intel-dbg but couldn't find any package with debugging symbols for xserver-xorg-core, so running 'sudo gdb --core=/core' only yielded this:

Core was generated by `/usr/lib/xorg/Xorg -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -noliste'.
Program terminated with signal SIGBUS, Bus error.
#0 0x00005631c45681f1 in ?? ()
[Current thread is 1 (LWP 1016)]
(gdb) bt
#0 0x00005631c45681f1 in ?? ()
#1 0x0000000000000001 in ?? ()
#2 0x00005631c5a03350 in ?? ()
#3 0x0000000000000001 in ?? ()
#4 0x00005631c4596ec5 in ?? ()
#5 0x00007f5f0974e2a0 in ?? ()
#6 0x00007f5f093e5977 in ?? ()
#7 0x0000000000000000 in ?? ()

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: 2.20.9-0ubuntu7.1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CrashCounter: 1
Date: Thu Jun 7 12:22:15 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExecutablePath: /usr/lib/xorg/Xorg
ExecutableTimestamp: 1523633505
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell 2nd Generation Core Processor Family Integrated Graphics Controller [1028:04b0]
InstallationDate: Installed on 2018-04-28 (40 days ago)
InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: Dell Inc. Inspiron N5110
ProcCmdline: /usr/lib/xorg/Xorg -configure
ProcCwd: /home/paulo/tmp
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-22-generic root=UUID=c4c2d11a-634c-4105-9991-e2fb5c18e1dc ro net.ifnames=0 quiet splash systemd.legacy_systemd_cgroup_controller=1
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 ?? ()
 xf86BusProbe ()
 InitOutput ()
 ?? ()
 __libc_start_main (main=0x55d8c7a2eb50, argc=2, argv=0x7ffdc1e4d098, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdc1e4d088) 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: 05/26/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 08FDW5
dmi.board.vendor: Dell Inc.
dmi.board.version: A06
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd05/26/2011:svnDellInc.:pnInspironN5110:pvrNotSpecified:rvnDellInc.:rn08FDW5:rvrA06:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron N5110
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.
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)]

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 #1753012, 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.