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[Bug 1539597] Re: unity-control-center crashed with SIGSEGV in gdk_display_get_event()


The default Unity DE fails to load altogether with the nvidia driver, it
just bounces right back to the login screen. Unity does load with the
nouveau driver activated but it slows to a crawl and eventually just
freezes. But that hardware has never been able to run Unity w/nouveau
(llvmpipe / Gallium 0.4 on NV4C).

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  unity-control-center crashed with SIGSEGV in gdk_display_get_event()

Status in unity-control-center package in Ubuntu:

Bug description:
  I get this crash trying to open System Settings in Xenial. The System
  Settings UI fails to open and apport takes over.

  ProblemType: Crash
  DistroRelease: Ubuntu 16.04
  Package: unity-control-center 15.04.0+16.04.20160119-0ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
  Uname: Linux 4.4.0-2-generic x86_64
  ApportVersion: 2.19.4-0ubuntu1
  Architecture: amd64
  CrashCounter: 1
  CurrentDesktop: GNOME-Flashback:Unity
  Date: Fri Jan 29 07:27:47 2016
  ExecutablePath: /usr/bin/unity-control-center
  InstallationDate: Installed on 2015-11-10 (80 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151109)
  ProcCmdline: unity-control-center --overview
   PATH=(custom, no user)
   Segfault happened at: 0x7fc5ad919809:	mov    0xd8(%rdi),%rbx
   PC (0x7fc5ad919809) ok
   source "0xd8(%rdi)" (0x000000d8) not located in a known VMA region (needed readable region)!
   destination "%rbx" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: unity-control-center
   ?? () from /usr/lib/x86_64-linux-gnu/libcogl.so.20
   ?? () from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
   gdk_display_get_event () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
  Title: unity-control-center crashed with SIGSEGV in gdk_display_get_event()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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