Thanks for looking at the bug. Following your instructions, got this: jerry@jerry-AOD255E:~$ sudo gdb /usr/bin/compiz /tmp/unity-crash/CoreDump GNU gdb (Ubuntu 7.8-1ubuntu4) 7.8.0.20141001-cvs Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/bin/compiz...(no debugging symbols found)...done. [New LWP 2018] [New LWP 2023] [New LWP 2045] [New LWP 2534] [New LWP 2046] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `compiz'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f4ebcc67439 in unity::UnityScreen::paintDisplay (this=this@entry=0xb0f000) at /build/buildd/unity-7.3.1+14.10.20141016/plugins/unityshell/src/unityshell.cpp:837 837 /build/buildd/unity-7.3.1+14.10.20141016/plugins/unityshell/src/unityshell.cpp: No such file or directory.
(gdb) bt full #0 0x00007f4ebcc67439 in unity::UnityScreen::paintDisplay (this=this@entry=0xb0f000) at /build/buildd/unity-7.3.1+14.10.20141016/plugins/unityshell/src/unityshell.cpp:837 blur_region = {priv = 0x1cdee60} gpu_device = <optimized out> backup_texture_id = <optimized out> surface_target = <optimized out> output = 0x65fa20 current_draw_binding = 1 old_read_binding = 1 outputGeo = <optimized out> #1 0x00007f4ebcc6779a in unity::UnityScreen::glPaintOutput (this=0xb0f000, attrib=..., transform=..., region=..., output=0x65fa20, mask=3) at /build/buildd/unity-7.3.1+14.10.20141016/plugins/unityshell/src/unityshell.cpp:1421 ret = true force = false #2 0x00007f4ec7bdc7c8 in GLScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so No symbol table info available. #3 0x00007f4ec7be4415 in PrivateGLScreen::paintOutputs(std::list<CompOutput*, std::allocator<CompOutput*> >&, unsigned int, CompRegion const&) () from /usr/lib/compiz/libopengl.so No symbol table info available. #4 0x00007f4ed42f81d6 in CompositeScreen::paint(std::list<CompOutput*, std::allocator<CompOutput*> >&, unsigned int) () from /usr/lib/compiz/libcomposite.so ---Type <return> to continue, or q <return> to quit--- No symbol table info available. #5 0x00007f4ed42fb92c in CompositeScreen::handlePaintTimeout() () from /usr/lib/compiz/libcomposite.so No symbol table info available. #6 0x00007f4edc5a31ed in CompTimer::triggerCallback() () from /usr/lib/libcompiz_core.so.ABI-20140123 No symbol table info available. #7 0x00007f4edc5a32bf in CompTimeoutSource::callback() () from /usr/lib/libcompiz_core.so.ABI-20140123 No symbol table info available. #8 0x00007f4edc5a276d in CompTimeoutSource::dispatch(sigc::slot_base*) () from /usr/lib/libcompiz_core.so.ABI-20140123 No symbol table info available. #9 0x00007f4edaa7e10f in Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1 No symbol table info available. #10 0x00007f4eda76db6d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #11 0x00007f4eda76df48 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #12 0x00007f4eda76e272 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #13 0x00007f4edc55c96b in compiz::private_screen::EventManager::startEventLoop(_XDisplay*) () from /usr/lib/libcompiz_core.so.ABI-20140123 No symbol table info available. #14 0x0000000000401931 in main () No symbol table info available. (gdb) q jerry@jerry-AOD255E:~$ Anything else? Thanks, Jerry -- 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/1366351 Title: compiz crashed with SIGSEGV in g_closure_invoke() if unity-settings- daemon goes away Status in Compiz: Invalid Status in Unity: Fix Committed Status in “compiz” package in Ubuntu: Invalid Status in “unity” package in Ubuntu: Fix Released Bug description: Compiz crashes when unity-settings-daemon goes away. Simple reproducer: "killall -SEGV unity-settings-daemon". ProblemType: Crash DistroRelease: Ubuntu 14.10 Package: compiz-core 1:0.9.12+14.10.20140812-0ubuntu1 ProcVersionSignature: Ubuntu 3.16.0-13.19-generic 3.16.1 Uname: Linux 3.16.0-13-generic x86_64 NonfreeKernelModules: fglrx .tmp.unity.support.test.0: ApportVersion: 2.14.7-0ubuntu2 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 CurrentDesktop: Unity Date: Sat Sep 6 10:48:43 2014 Disassembly: => 0x0: Cannot access memory at address 0x0 DistUpgraded: 2014-09-01 18:03:23,330 DEBUG enabling apt cron job DistroCodename: utopic DistroVariant: ubuntu ExecutablePath: /usr/bin/compiz GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Curacao XT [Radeon R9 270X] [1002:6810] (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device [1043:04a1] InstallationDate: Installed on 2014-03-24 (166 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: MSI MS-7640 ProcCmdline: compiz ProcEnviron: PATH=(custom, no user) SHELL=/bin/bash LD_LIBRARY_PATH=<set> LANG=en_US.UTF-8 XDG_RUNTIME_DIR=<set> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-13-generic root=UUID=2696ea28-d88b-431c-a1fa-1e0f297ee664 ro quiet splash vt.handoff=7 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: compiz StacktraceTop: ?? () g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 Title: compiz crashed with SIGSEGV in g_closure_invoke() UpgradeStatus: Upgraded to utopic on 2014-09-01 (4 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 10/31/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V1.15 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: 890FXA-GD70 (MS-7640) dmi.board.vendor: MSI dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MSI dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.15:bd10/31/2012:svnMSI:pnMS-7640:pvr1.0:rvnMSI:rn890FXA-GD70(MS-7640):rvr1.0:cvnMSI:ct3:cvr1.0: dmi.product.name: MS-7640 dmi.product.version: 1.0 dmi.sys.vendor: MSI version.compiz: compiz 1:0.9.12+14.10.20140812-0ubuntu1 version.fglrx-installer: fglrx-installer N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.56-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.2.6-1ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.2.6-1ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu9 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2 xserver.bootTime: Sat Sep 6 10:48:05 2014 xserver.configfile: default xserver.errors: open /dev/dri/card0: No such file or directory AIGLX error: failed to open /usr/X11R6/lib64/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib64/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory] AIGLX error: failed to open /usr/lib64/dri/fglrx_dri.so, error[/usr/lib64/dri/fglrx_dri.so: cannot open shared object file: No such file or directory] AIGLX error: failed to open /usr/X11R6/lib/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory] xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.15.1-0ubuntu9 xserver.video_driver: fglrx To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1366351/+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