.
Thread 7 (LWP 1277):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x00007f79964a6d0a in g_cond_wait_until () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f7996436929 in g_async_queue_pop_intern_unlocked () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f7996489506 in g_thread_pool_thread_proxy () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f7996488b95 in g_thread_proxy () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f79961ff66a in start_thread (arg=0x7f7973def700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f7973def700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140159611762432, 5442442247231900776, 0, 140727411804815, 140159611763136, 31983248, -5371219998136726424, -5371566902847206296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007f7995f2ee4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 6 (LWP 1276):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x00007f79964a6d0a in g_cond_wait_until () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f7996436929 in g_async_queue_pop_intern_unlocked () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f7996489506 in g_thread_pool_thread_proxy () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f7996488b95 in g_thread_proxy () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f79961ff66a in start_thread (arg=0x7f798bed5700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f798bed5700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140160015357696, 5442442247231900776, 0, 140727411804367, 8388608, 32002576, -5371554407511618456, -5371566902847206296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007f7995f2ee4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 5 (LWP 936):
#0  0x00007f7995f2383d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f799646233c in g_main_context_iterate.isra () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f79964626c2 in g_main_loop_run () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f7996a6c816 in gdbus_shared_thread_func () from /tmp/apport_sandbox_fUEYH1/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007f7996488b95 in g_thread_proxy () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f79961ff66a in start_thread (arg=0x7f798b6d4700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f798b6d4700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140160006964992, 5442442247231900776, 0, 140160023747007, 140160006965696, 140159748190992, -5371555510781342616, -5371566902847206296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007f7995f2ee4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 4 (LWP 950):
#0  0x00007f7995f2383d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f799646233c in g_main_context_iterate.isra () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f799646244c in g_main_context_iteration () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f798acc728d in ?? () from /tmp/apport_sandbox_fUEYH1/usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#4  0x00007f7996488b95 in g_thread_proxy () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f79961ff66a in start_thread (arg=0x7f798a627700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f798a627700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140159989479168, 5442442247231900776, 0, 140727411804287, 140159989479872, 32253088, -5371557784429654936, -5371566902847206296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007f7995f2ee4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 3 (LWP 932):
#0  0x00007f7995f2383d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f799646233c in g_main_context_iterate.isra () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f799646244c in g_main_context_iteration () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f7996462489 in glib_worker_main () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f7996488b95 in g_thread_proxy () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f79961ff66a in start_thread (arg=0x7f798ced7700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f798ced7700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140160032143104, 5442442247231900776, 0, 140727411805455, 140160032143808, 0, -5371552209562104728, -5371566902847206296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007f7995f2ee4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 2 (LWP 1275):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x00007f79964a6d0a in g_cond_wait_until () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f7996436929 in g_async_queue_pop_intern_unlocked () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f7996489506 in g_thread_pool_thread_proxy () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f7996488b95 in g_thread_proxy () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f79961ff66a in start_thread (arg=0x7f798c6d6700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f798c6d6700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140160023750400, 5442442247231900776, 0, 140727411804367, 8388608, 32001760, -5371553308536861592, -5371566902847206296}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007f7995f2ee4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 1 (LWP 886):
#0  0x00007f7995e5d227 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
        resultvar = 0
        pid = 886
        selftid = 886
#1  0x00007f7995e5ee8a in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x1f1ca10, sa_sigaction = 0x1f1ca10}, sa_mask = {__val = {111, 140160191857376, 140160216395616, 0, 32623120, 111, 140160191857376, 140727411805024, 140160212040544, 32433728, 140160182962172, 0, 140160186371128, 0, 4294967295, 140160186371072}}, sa_flags = 32623120, sa_restorer = 0x0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f7996487d45 in g_assertion_message () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f7996487dda in g_assertion_message_expr () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f7997a5ee59 in gsd_rr_config_load_current (config=config@entry=0x7f797c006c20, error=error@entry=0x7ffda7640cb0) at gsd-rr-config.c:661
        a = 0x1eee640
        rr_outputs = <optimized out>
        i = <optimized out>
        clone_width = <optimized out>
        clone_height = <optimized out>
        last_x = <optimized out>
        __func__ = "gsd_rr_config_load_current"
#5  0x00007f7997a5eee5 in gsd_rr_config_new_current (screen=<optimized out>, error=error@entry=0x7ffda7640cb0) at gsd-rr-config.c:737
        self = 0x7f797c006c20
#6  0x00007f7997a5efc9 in gsd_rr_config_load_filename (result=result@entry=0x7f797c006ba0, filename=filename@entry=0x1efc3d0 "/var/lib/lightdm/.config/monitors.xml.backup", error=error@entry=0x7ffda7640cb0) at gsd-rr-config.c:677
        current = <optimized out>
        configs = <optimized out>
        found = 0
        __func__ = "gsd_rr_config_load_filename"
#7  0x00007f79731cdc7c in apply_configuration_from_filename (manager=manager@entry=0x1ed8a50, filename=filename@entry=0x1efc3d0 "/var/lib/lightdm/.config/monitors.xml.backup", no_matching_config_is_an_error=no_matching_config_is_an_error@entry=0, timestamp=timestamp@entry=0, error=error@entry=0x7ffda7640d08) at gsd-xrandr-manager.c:470
        priv = 0x1ed89e0
        config = 0x7f797c006ba0
        my_error = 0x0
        success = <optimized out>
        str = <optimized out>
#8  0x00007f79731d1369 in apply_stored_configuration_at_startup (timestamp=0, manager=0x1ed8a50) at gsd-xrandr-manager.c:1952
        success = <optimized out>
        intended_filename = 0x1efc1b0 "/var/lib/lightdm/.config/monitors.xml"
        pnp_ids = 0x1e9a360
        my_error = 0x0
        backup_filename = 0x1efc3d0 "/var/lib/lightdm/.config/monitors.xml.backup"
#9  gsd_xrandr_manager_start (manager=0x1ed8a50, error=error@entry=0x7ffda7640d60) at gsd-xrandr-manager.c:2421
No locals.
#10 0x00007f79731cd80e in impl_activate (plugin=0x7f7974007170) at gsd-xrandr-plugin.c:29
        error = 0x0
        plugin_cast = <optimized out>
#11 0x0000000000405410 in _activate_plugin (info=0x1e8b360) at gnome-settings-plugin-info.c:437
        res = 1
#12 gnome_settings_plugin_info_activate (info=info@entry=0x1e8b360) at gnome-settings-plugin-info.c:460
No locals.
#13 0x0000000000404295 in maybe_activate_plugin (info=0x1e8b360, user_data=<optimized out>) at gnome-settings-manager.c:93
        res = <optimized out>
#14 0x00007f799648006d in g_slist_foreach () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#15 0x0000000000404762 in _load_all (manager=0x1ea8220) at gnome-settings-manager.c:319
No locals.
#16 gnome_settings_manager_start (manager=0x1ea8220, error=error@entry=0x7ffda7640e30) at gnome-settings-manager.c:406
        ret = 0
#17 0x0000000000403ddd in start_settings_manager () at main.c:154
        res = <optimized out>
        error = 0x0
#18 name_acquired_handler (connection=<optimized out>, name=<optimized out>, user_data=<optimized out>) at main.c:358
        proxy = 0x1e920b0
#19 0x00007f7996a66da6 in do_call () from /tmp/apport_sandbox_fUEYH1/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#20 0x00007f7996a66fe8 in request_name_cb () from /tmp/apport_sandbox_fUEYH1/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#21 0x00007f7996a0fb13 in g_task_return_now () from /tmp/apport_sandbox_fUEYH1/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#22 0x00007f7996a101be in g_task_return () from /tmp/apport_sandbox_fUEYH1/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#23 0x00007f7996a5e99a in g_dbus_connection_call_done () from /tmp/apport_sandbox_fUEYH1/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#24 0x00007f7996a0fb13 in g_task_return_now () from /tmp/apport_sandbox_fUEYH1/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#25 0x00007f7996a0fb49 in complete_in_idle_cb () from /tmp/apport_sandbox_fUEYH1/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#26 0x00007f7996461ffa in g_main_context_dispatch () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#27 0x00007f79964623a0 in g_main_context_iterate.isra () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#28 0x00007f79964626c2 in g_main_loop_run () from /tmp/apport_sandbox_fUEYH1/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#29 0x00007f7996f21135 in gtk_main () at /build/gtk+3.0-hryEEv/gtk+3.0-3.18.7/./gtk/gtkmain.c:1241
        loop = 0x1e85240
#30 0x00000000004037d1 in main (argc=1, argv=0x7ffda7641188) at main.c:483
No locals.