Unity

compiz crashed with SIGSEGV in unity::ui::EdgeBarrierController::Impl::OnPointerBarrierEvent()

Bug #984711 reported by Felix Möller on 2012-04-18

This bug report is 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(). Edit Remove

100

This bug affects 21 people

Affects		Status	Importance	Assigned to	Milestone
	Unity	New	Undecided	Unassigned
	unity (Ubuntu)	Confirmed	Medium	Unassigned

Bug Description

When attaching a second monitor the mouse sometimes gets locked on the external monitor. The edge between the monitors is sticky then. At first one has no chance to move the mouse to the internal monitor. However after some seconds it is possible and then compiz crashes. This happened allready several times to me.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity 5.10.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
ApportVersion: 2.0.1-0ubuntu4
Architecture: amd64
Date: Wed Apr 18 11:17:53 2012
Disassembly: => 0x0: Cannot access memory at address 0x0
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120331)
ProcCmdline: compiz
ProcEnviron:
PATH=(custom, no user)
LANG=de_DE.UTF-8
SHELL=/bin/bash
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: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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Revision history for this message

Felix Möller (felix-derklecks) wrote on 2012-04-18:

Dependencies.txt Edit (7.0 KiB, text/plain; charset="utf-8")
ProcMaps.txt Edit (110.8 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (815 bytes, text/plain; charset="utf-8")
Registers.txt Edit (726 bytes, text/plain; charset="utf-8")
Stacktrace.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ThreadStacktrace.txt Edit (5.2 KiB, text/plain; charset="utf-8")
XsessionErrors.txt Edit (6.5 KiB, text/plain; charset="utf-8")

Revision history for this message

Apport retracing service (apport) wrote on 2012-04-18:

StacktraceTop:
?? ()
unity::ui::EdgeBarrierController::Impl::OnPointerBarrierEvent (this=0x14e3880, owner=0x29e9a80, event=...) at /build/buildd/unity-5.10.0/plugins/unityshell/src/EdgeBarrierController.cpp:139
operator() (_A_a2=<optimized out>, _A_a1=<optimized out>, this=<optimized out>) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1917
operator()<unity::ui::PointerBarrierWrapper* const&, const std::shared_ptr<unity::ui::BarrierEvent>&> (_A_arg2=<optimized out>, _A_arg1=<optimized out>, this=<optimized out>) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:103
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 (rep=<optimized out>, a_1=<optimized out>, a_2=<optimized out>) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:173

Revision history for this message

Apport retracing service (apport) wrote on 2012-04-18: Stacktrace.txt

Stacktrace.txt Edit (4.5 KiB, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2012-04-18: ThreadStacktrace.txt

ThreadStacktrace.txt Edit (13.5 KiB, text/plain)

Changed in unity (Ubuntu):
importance:	Undecided → Medium
tags:	removed: need-amd64-retrace

Sebastien Bacher (seb128) on 2012-04-19

visibility:

private → public

Revision history for this message

Launchpad Janitor (janitor) wrote on 2012-04-20:

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in unity (Ubuntu):
status:	New → Confirmed

Revision history for this message

Aidamir Lovpache (aidamatrix) wrote on 2012-04-23:

It happend also to me.

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Ashton Fagg (fagg) wrote on 2012-04-25:

This happens to me once every few days. It's very, very annoying. I've noticed it's usually when I'm watching YouTube and try to move between monitors, although this may just be sheer coincidence.

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Alexander T. Stanton (stanton-sculpture) wrote on 2012-04-27:

Whenever I use the workspace switcher [super] + [s] it tends to happen most often then.

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Saleh Alhemidan (ssaalleehh8) wrote on 2012-05-04:

I have 3 monitors and the mouse stack every time I move between them. Its really annoying.