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[Andrea Azzarone <1345873@xxxxxxxxxxxxxxxxxx>]

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https://bugs.launchpad.net/bugs/1345873

Title:
  First Use of Workspace Switcher: compiz crashed with SIGSEGV in
  assign_to_own()

Status in Unity:
  Confirmed
Status in unity package in Ubuntu:
  Confirmed

Bug description:
  First click on workspace switcher icon in Launcher after a clean
  install of the 20 July Utopic daily failed to produce the expected
  spread of workspaces and instead triggered approx. 30 seconds of disk
  activity followed by an Apport message that compiz had crashed.

  On the second the switcher performed as expected.

  I've seen the same behavior on every Unity release since 12.04.

  ThinkPad W530, Intel HD4000, 1920x1080.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.10
  Package: unity 7.3.0+14.10.20140711-0ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-4.9-generic 3.16.0-rc5
  Uname: Linux 3.16.0-4-generic x86_64
  ApportVersion: 2.14.4-0ubuntu2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Jul 20 21:11:18 2014
  Disassembly: => 0x7f0000000001:	Cannot access memory at address 0x7f0000000001
  ExecutablePath: /usr/bin/compiz
  InstallationDate: Installed on 2014-07-21 (0 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140720)
  ProcCmdline: compiz
  ProcEnviron:
   PATH=(custom, no user)
   LANGUAGE=en_US
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7f0000000001:	Cannot access memory at address 0x7f0000000001
   PC (0x7f0000000001) not located in a known VMA region (needed executable region)!
  SegvReason: executing unknown VMA
  Signal: 11
  SourcePackage: unity
  StacktraceTop:
   ?? ()
   CompAction::initiate() const () from /usr/lib/libcompiz_core.so.ABI-20140123
   unity::MultiActionList::Initiate(std::string const&, std::vector<CompOption, std::allocator<CompOption> > const&, int) const () from /usr/lib/compiz/libunityshell.so
   unity::MultiActionList::InitiateAll(std::vector<CompOption, std::allocator<CompOption> > const&, int) const () from /usr/lib/compiz/libunityshell.so
   unity::PluginAdapter::InitiateExpo() () from /usr/lib/compiz/libunityshell.so
  Title: compiz crashed with SIGSEGV in CompAction::initiate()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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