*** This bug is a duplicate of bug 983268 *** https://bugs.launchpad.net/bugs/983268
** This bug has been marked a duplicate of bug 983268 compiz crashed with SIGSEGV in ends_with_iter_select<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char> >, char const*, boost::algorithm::is_iequal>() from unity::ui::PointerBarrierWrapper::EmitCurrentData() -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1017402 Title: compiz crashed with SIGSEGV in unity::ui::EdgeBarrierController::Impl::OnPointerBarrierEvent() Status in Unity: Confirmed Status in unity package in Ubuntu: Confirmed Bug description: This is what happened before the crash: 1) I connected another monitor to my laptop's mini-DVI port (which was previously set to span, not mirror). 2) Unity didn't recognise the monitor, so I opened up display settings. 3) The monitor was recognised, but then everything got slow temporarily. 4) In addition, the mouse cursor could move around the second monitor, but got "stuck" when it just entered the laptop's monitor. 5) I lost all window decorations, and couldn't alt-tab, etc. I was notified of a crash. 6) I had to switch to tty1 and run $ unity --replace . All was fine then. This crash does not happen all the time. ProblemType: Crash DistroRelease: Ubuntu 12.04 Package: unity 5.12-0ubuntu1.1 ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18 Uname: Linux 3.2.0-25-generic x86_64 ApportVersion: 2.0.1-0ubuntu8 Architecture: amd64 Date: Mon Jun 25 19:03:05 2012 Disassembly: => 0x0: Cannot access memory at address 0x0 ExecutablePath: /usr/bin/compiz InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) ProcCmdline: compiz --replace SegvAnalysis: Segfault happened at: 0x0: Cannot access memory at address 0x0 PC (0x00000000) not located in a known VMA region (needed executable region)! SegvReason: executing NULL VMA Signal: 11 SourcePackage: unity StacktraceTop: ?? () unity::ui::EdgeBarrierController::Impl::OnPointerBarrierEvent(unity::ui::PointerBarrierWrapper*, std::shared_ptr<unity::ui::BarrierEvent>) () from /usr/lib/compiz/libunityshell.so sigc::internal::slot_call2<sigc::bound_mem_functor2<void, unity::ui::EdgeBarrierController::Impl, unity::ui::PointerBarrierWrapper*, std::shared_ptr<unity::ui::BarrierEvent> >, void, unity::ui::PointerBarrierWrapper*, std::shared_ptr<unity::ui::BarrierEvent> >::call_it(sigc::internal::slot_rep*, unity::ui::PointerBarrierWrapper* const&, std::shared_ptr<unity::ui::BarrierEvent> const&) () from /usr/lib/compiz/libunityshell.so unity::ui::PointerBarrierWrapper::EmitCurrentData() () from /usr/lib/compiz/libunityshell.so ?? () from /usr/lib/compiz/libunityshell.so Title: compiz crashed with SIGSEGV in unity::ui::EdgeBarrierController::Impl::OnPointerBarrierEvent() UpgradeStatus: Upgraded to precise on 2012-04-29 (57 days ago) UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1017402/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp