Xorg crashed with SIGABRT in RRSetChanged()

[Walter Garcia-Fontes]

I got this crash just after logging in.

ProblemType: Crash
DistroRelease: Ubuntu 17.04
Package: xserver-xorg-core 2:1.18.4-1ubuntu9
ProcVersionSignature: Ubuntu 4.10.0-8.10-generic 4.10.0-rc8
Uname: Linux 4.10.0-8-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Wed Mar 1 21:43:35 2017
DistUpgraded: 2017-03-01 09:44:41,788 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (g-exec-error-quark: No s'ha pogut executar el procés fill «./xorg_fix_proprietary.py» (No such file or directory) (8))
DistroCodename: zesty
DistroVariant: ubuntu
DkmsStatus: virtualbox, 5.1.14, 4.8.0-39-generic, x86_64: installed
ExecutablePath: /usr/lib/xorg/Xorg
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell 3rd Gen Core processor Graphics Controller [1028:0535]
 NVIDIA Corporation GF108GLM [NVS 5200M] [10de:0dfc] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Dell GF108GLM [NVS 5200M] [1028:1535]
InstallationDate: Installed on 2016-11-04 (117 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
MachineType: Dell Inc. Latitude E6530
ProcCmdline: /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
ProcEnviron: PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-8-generic root=UUID=7a75ba14-ff52-4961-8dee-2baef1c7bace ro quiet splash vt.handoff=7
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 RRSetChanged ()
 RRScreenSetSizeRange ()
 xf86RandR12CreateScreenResources ()
 ?? ()
 ?? ()
Title: Xorg crashed with SIGABRT in RRSetChanged()
UpgradeStatus: Upgraded to zesty on 2017-03-01 (0 days ago)
UserGroups:

dmi.bios.date: 08/27/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A13
dmi.board.name: 07Y85M
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA13:bd08/27/2013:svnDellInc.:pnLatitudeE6530:pvr01:rvnDellInc.:rn07Y85M:rvrA01:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6530
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.13.1+17.04.20170109-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.75-1
version.libgl1-mesa-dri: libgl1-mesa-dri 13.0.4-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 13.0.4-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-1ubuntu9
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.8.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160706-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.13-1

[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 #1542625, 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.