[kurt@kc-x64architecture ~]$ sudo coredumpctl gdb 659 PID: 659 (gnome-shell) UID: 120 (gdm) GID: 120 (gdm) Signal: 5 (TRAP) Timestamp: Mon 2016-04-11 18:25:21 EDT (4min 6s ago) Command Line: /usr/bin/gnome-shell Executable: /usr/bin/gnome-shell Control Group: /user.slice/user-120.slice/session-c3.scope Unit: session-c3.scope Slice: user-120.slice Session: c3 Owner UID: 120 (gdm) Boot ID: c0d8da04c78e4c908e179607e9ada48f Machine ID: bf66ee7e00694ec481e9564ee82c651e Hostname: kc-x64architecture Coredump: /var/lib/systemd/coredump/core.gnome-shell.120.c0d8da04c78e4c908e179607e9ada48f.659.1460413521000000000000.lz4 Message: Process 659 (gnome-shell) of user 120 dumped core. Stack trace of thread 659: #0 0x00007fb8930d37eb g_logv (libglib-2.0.so.0) #1 0x00007fb89058c369 n/a (libcogl.so.20) #2 0x00007fb89053c97a n/a (libcogl.so.20) #3 0x00007fb890582515 cogl_framebuffer_allocate (libcogl.so.20) #4 0x00007fb89053c03f n/a (libcogl.so.20) #5 0x00007fb890582918 cogl_framebuffer_clear4f (libcogl.so.20) #6 0x00007fb895a7c885 st_theme_node_paint (libgnome-shell.so) #7 0x00007fb895a87fcf st_widget_paint_background (libgnome-shell.so) #8 0x00007fb895a87ffc n/a (libgnome-shell.so) #9 0x00007fb8933a3122 n/a (libgobject-2.0.so.0) #10 0x00007fb8933bd9d6 g_signal_emit_valist (libgobject-2.0.so.0) #11 0x00007fb8933be0bf g_signal_emit (libgobject-2.0.so.0) #12 0x00007fb893dd521b clutter_actor_continue_paint (libclutter-1.0.so.0) #13 0x00007fb893ddb3db n/a (libclutter-1.0.so.0) #14 0x00007fb893ddb710 n/a (libclutter-1.0.so.0) #15 0x00007fb8933a3122 n/a (libgobject-2.0.so.0) #16 0x00007fb8933bd9d6 g_signal_emit_valist (libgobject-2.0.so.0) #17 0x00007fb8933be0bf g_signal_emit (libgobject-2.0.so.0) #18 0x00007fb893dd521b clutter_actor_continue_paint (libclutter-1.0.so.0) #19 0x00007fb893ddb3db n/a (libclutter-1.0.so.0) #20 0x00007fb893ddb710 n/a (libclutter-1.0.so.0) #21 0x00007fb8933a3122 n/a (libgobject-2.0.so.0) #22 0x00007fb8933bd9d6 g_signal_emit_valist (libgobject-2.0.so.0) #23 0x00007fb8933be0bf g_signal_emit (libgobject-2.0.so.0) #24 0x00007fb893dd521b clutter_actor_continue_paint (libclutter-1.0.so.0) #25 0x00007fb893ddb3db n/a (libclutter-1.0.so.0) #26 0x00007fb893ddb710 n/a (libclutter-1.0.so.0) #27 0x00007fb8933a3122 n/a (libgobject-2.0.so.0) #28 0x00007fb8933bd9d6 g_signal_emit_valist (libgobject-2.0.so.0) #29 0x00007fb8933be0bf g_signal_emit (libgobject-2.0.so.0) #30 0x00007fb893dd521b clutter_actor_continue_paint (libclutter-1.0.so.0) #31 0x00007fb893ddb3db n/a (libclutter-1.0.so.0) #32 0x00007fb895a5b560 n/a (libgnome-shell.so) #33 0x00007fb8933a3122 n/a (libgobject-2.0.so.0) #34 0x00007fb8933bd9d6 g_signal_emit_valist (libgobject-2.0.so.0) #35 0x00007fb8933be0bf g_signal_emit (libgobject-2.0.so.0) #36 0x00007fb893dd521b clutter_actor_continue_paint (libclutter-1.0.so.0) #37 0x00007fb893ddb3db n/a (libclutter-1.0.so.0) #38 0x00007fb893e2dcca n/a (libclutter-1.0.so.0) #39 0x00007fb894a13bb5 n/a (libmutter.so.0) #40 0x00007fb8933a31d4 n/a (libgobject-2.0.so.0) #41 0x00007fb8933bd9d6 g_signal_emit_valist (libgobject-2.0.so.0) #42 0x00007fb8933be0bf g_signal_emit (libgobject-2.0.so.0) #43 0x00007fb893dd521b clutter_actor_continue_paint (libclutter-1.0.so.0) #44 0x00007fb893ddb3db n/a (libclutter-1.0.so.0) #45 0x00007fb893e31edb n/a (libclutter-1.0.so.0) #46 0x00007fb893dc3809 n/a (libclutter-1.0.so.0) #47 0x00007fb893e30707 n/a (libclutter-1.0.so.0) #48 0x00007fb893e1a459 n/a (libclutter-1.0.so.0) #49 0x00007fb8930ccf07 g_main_context_dispatch (libglib-2.0.so.0) #50 0x00007fb8930cd160 n/a (libglib-2.0.so.0) #51 0x00007fb8930cd482 g_main_loop_run (libglib-2.0.so.0) #52 0x00007fb894a3cd3c meta_run (libmutter.so.0) #53 0x0000000000402197 main (gnome-shell) #54 0x00007fb892ae5710 __libc_start_main (libc.so.6) #55 0x00000000004022c9 n/a (gnome-shell) Stack trace of thread 661: #0 0x00007fb892ba3c3d poll (libc.so.6) #1 0x00007fb8930cd0fc n/a (libglib-2.0.so.0) #2 0x00007fb8930cd20c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007fb8930cd249 n/a (libglib-2.0.so.0) #4 0x00007fb8930f3975 n/a (libglib-2.0.so.0) #5 0x00007fb892e6d424 start_thread (libpthread.so.0) #6 0x00007fb892baccbd __clone (libc.so.6) Stack trace of thread 662: #0 0x00007fb892ba3c3d poll (libc.so.6) #1 0x00007fb8930cd0fc n/a (libglib-2.0.so.0) #2 0x00007fb8930cd482 g_main_loop_run (libglib-2.0.so.0) #3 0x00007fb8938d66d6 n/a (libgio-2.0.so.0) #4 0x00007fb8930f3975 n/a (libglib-2.0.so.0) #5 0x00007fb892e6d424 start_thread (libpthread.so.0) #6 0x00007fb892baccbd __clone (libc.so.6) Stack trace of thread 664: #0 0x00007fb892ba3c3d poll (libc.so.6) #1 0x00007fb8930cd0fc n/a (libglib-2.0.so.0) #2 0x00007fb8930cd20c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007fb8789fa43d n/a (libdconfsettings.so) #4 0x00007fb8930f3975 n/a (libglib-2.0.so.0) #5 0x00007fb892e6d424 start_thread (libpthread.so.0) #6 0x00007fb892baccbd __clone (libc.so.6) Stack trace of thread 717: #0 0x00007fb892e7303f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0) #1 0x00007fb885beb4a0 PR_WaitCondVar (libnspr4.so) #2 0x00007fb88e9db816 n/a (libmozjs-24.so) #3 0x00007fb885bf0dcb n/a (libnspr4.so) #4 0x00007fb892e6d424 start_thread (libpthread.so.0) #5 0x00007fb892baccbd __clone (libc.so.6) Stack trace of thread 665: #0 0x00007fb892ba3c3d poll (libc.so.6) #1 0x00007fb88ef151b1 n/a (libpulse.so.0) #2 0x00007fb88ef06761 pa_mainloop_poll (libpulse.so.0) #3 0x00007fb88ef06dfe pa_mainloop_iterate (libpulse.so.0) #4 0x00007fb88ef06eb0 pa_mainloop_run (libpulse.so.0) #5 0x00007fb88ef150f9 n/a (libpulse.so.0) #6 0x00007fb8844c0b08 n/a (libpulsecommon-8.0.so) #7 0x00007fb892e6d424 start_thread (libpthread.so.0) #8 0x00007fb892baccbd __clone (libc.so.6) Stack trace of thread 716: #0 0x00007fb892e7303f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0) #1 0x00007fb885beb4a0 PR_WaitCondVar (libnspr4.so) #2 0x00007fb88e967e9e n/a (libmozjs-24.so) #3 0x00007fb885bf0dcb n/a (libnspr4.so) #4 0x00007fb892e6d424 start_thread (libpthread.so.0) #5 0x00007fb892baccbd __clone (libc.so.6) GNU gdb (GDB) 7.11 Copyright (C) 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later 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-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/bin/gnome-shell...(no debugging symbols found)...done. [New LWP 659] [New LWP 661] [New LWP 662] [New LWP 664] [New LWP 717] [New LWP 665] [New LWP 716] warning: Could not load shared library symbols for linux-vdso.so.1. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". Core was generated by `/usr/bin/gnome-shell'. Program terminated with signal SIGTRAP, Trace/breakpoint trap. #0 0x00007fb8930d37eb in g_logv () from /usr/lib/libglib-2.0.so.0 [Current thread is 1 (Thread 0x7fb895fc29c0 (LWP 659))] (gdb) bt #0 0x00007fb8930d37eb in g_logv () from /usr/lib/libglib-2.0.so.0 #1 0x00007fb89058c369 in ?? () from /usr/lib/libcogl.so.20 #2 0x00007fb89053c97a in ?? () from /usr/lib/libcogl.so.20 #3 0x00007fb890582515 in cogl_framebuffer_allocate () from /usr/lib/libcogl.so.20 #4 0x00007fb89053c03f in ?? () from /usr/lib/libcogl.so.20 #5 0x00007fb890582918 in cogl_framebuffer_clear4f () from /usr/lib/libcogl.so.20 #6 0x00007fb895a7c885 in st_theme_node_paint () from /usr/lib/gnome-shell/libgnome-shell.so #7 0x00007fb895a87fcf in st_widget_paint_background () from /usr/lib/gnome-shell/libgnome-shell.so #8 0x00007fb895a87ffc in ?? () from /usr/lib/gnome-shell/libgnome-shell.so #9 0x00007fb8933a3122 in ?? () from /usr/lib/libgobject-2.0.so.0 #10 0x00007fb8933bd9d6 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #11 0x00007fb8933be0bf in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #12 0x00007fb893dd521b in clutter_actor_continue_paint () from /usr/lib/libclutter-1.0.so.0 #13 0x00007fb893ddb3db in ?? () from /usr/lib/libclutter-1.0.so.0 #14 0x00007fb893ddb710 in ?? () from /usr/lib/libclutter-1.0.so.0 #15 0x00007fb8933a3122 in ?? () from /usr/lib/libgobject-2.0.so.0 #16 0x00007fb8933bd9d6 in g_signal_emit_valist () ---Type to continue, or q to quit--- o.0 #17 0x00007fb8933be0bf in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #18 0x00007fb893dd521b in clutter_actor_continue_paint () from /usr/lib/libclutter-1.0.so.0 #19 0x00007fb893ddb3db in ?? () from /usr/lib/libclutter-1.0.so.0 #20 0x00007fb893ddb710 in ?? () from /usr/lib/libclutter-1.0.so.0 #21 0x00007fb8933a3122 in ?? () from /usr/lib/libgobject-2.0.so.0 #22 0x00007fb8933bd9d6 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #23 0x00007fb8933be0bf in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #24 0x00007fb893dd521b in clutter_actor_continue_paint () from /usr/lib/libclutter-1.0.so.0 #25 0x00007fb893ddb3db in ?? () from /usr/lib/libclutter-1.0.so.0 #26 0x00007fb893ddb710 in ?? () from /usr/lib/libclutter-1.0.so.0 #27 0x00007fb8933a3122 in ?? () from /usr/lib/libgobject-2.0.so.0 #28 0x00007fb8933bd9d6 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #29 0x00007fb8933be0bf in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #30 0x00007fb893dd521b in clutter_actor_continue_paint () from /usr/lib/libclutter-1.0.so.0 #31 0x00007fb893ddb3db in ?? () from /usr/lib/libclutter-1.0.so.0 #32 0x00007fb895a5b560 in ?? () from /usr/lib/gnome-shell/libgnome-shell.so #33 0x00007fb8933a3122 in ?? () from /usr/lib/libgobject-2.0.so.0 #34 0x00007fb8933bd9d6 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #35 0x00007fb8933be0bf in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #36 0x00007fb893dd521b in clutter_actor_continue_paint () from /usr/lib/libclutter-1.0.so.0 #37 0x00007fb893ddb3db in ?? () from /usr/lib/libclutter-1.0.so.0 #38 0x00007fb893e2dcca in ?? () from /usr/lib/libclutter-1.0.so.0 #39 0x00007fb894a13bb5 in ?? () from /usr/lib/libmutter.so.0 #40 0x00007fb8933a31d4 in ?? () from /usr/lib/libgobject-2.0.so.0 #41 0x00007fb8933bd9d6 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0 #42 0x00007fb8933be0bf in g_signal_emit () from /usr/lib/libgobject-2.0.so.0 #43 0x00007fb893dd521b in clutter_actor_continue_paint () from /usr/lib/libclutter-1.0.so.0 #44 0x00007fb893ddb3db in ?? () from /usr/lib/libclutter-1.0.so.0 #45 0x00007fb893e31edb in ?? () from /usr/lib/libclutter-1.0.so.0 #46 0x00007fb893dc3809 in ?? () from /usr/lib/libclutter-1.0.so.0 #47 0x00007fb893e30707 in ?? () from /usr/lib/libclutter-1.0.so.0 #48 0x00007fb893e1a459 in ?? () from /usr/lib/libclutter-1.0.so.0 #49 0x00007fb8930ccf07 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #50 0x00007fb8930cd160 in ?? () from /usr/lib/libglib-2.0.so.0 #51 0x00007fb8930cd482 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 #52 0x00007fb894a3cd3c in meta_run () from /usr/lib/libmutter.so.0 #53 0x0000000000402197 in main ()