(gdb) run
Starting program: /usr/bin/unity-control-center
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffec4c8700 (LWP 23258)]
[New Thread 0x7fffebcc7700 (LWP 23259)]
[New Thread 0x7fffeb4c6700 (LWP 23260)]
(unity-control-center:23254): GLib-CRITICAL **: g_strsplit: assertion 'string != NULL' failed
Thread 1 "unity-control-c" received signal SIGSEGV, Segmentation fault.
_cogl_check_extension (name=0xabe830 "GLX_EXT_texture_from_pixmap", ext=ext@entry=0x0) at cogl.c:75
75 cogl.c: No such file or directory.
(gdb) bt
#0 0x00007fffcd388549 in _cogl_check_extension (name=0xabe830 "GLX_EXT_texture_from_pixmap", ext=ext@entry=0x0) at cogl.c:75
#1 0x00007fffcd390838 in _cogl_feature_check (renderer=renderer@entry=0xabc2d0, driver_prefix=driver_prefix@entry=0x7fffcd3e92bb "GLX", data=data@entry=0x7fffcd60ad18 <winsys_feature_data+56>, gl_major=<optimised out>, gl_minor=<optimised out>, driver=driver@entry=COGL_DRIVER_GL, extensions=0x0, function_table=0xabf000) at cogl-feature-private.c:128
#2 0x00007fffcd3cdf42 in _cogl_winsys_renderer_connect (renderer=0xabc2d0) at winsys/cogl-winsys-glx.c:692
#3 0x00007fffcd3cdf42 in _cogl_winsys_renderer_connect (renderer=0xabc2d0, error=<optimised out>) at winsys/cogl-winsys-glx.c:794
#4 0x00007fffcd387401 in cogl_renderer_connect (renderer=0xabc2d0, error=error@entry=0x7fffffffd0d0) at cogl-renderer.c:687
#5 0x00007fffcd67b9ef in clutter_backend_real_create_context (error=0x7fffffffd0c8, driver_id=<optimised out>, backend=0xa380c0 [ClutterBackendGdk]) at clutter-backend.c:283
#6 0x00007fffcd67b9ef in clutter_backend_real_create_context (backend=0xa380c0 [ClutterBackendGdk], error=0x7fffffffd250) at clutter-backend.c:385
#7 0x00007fffcd694523 in _clutter_feature_init (error=error@entry=0x7fffffffd250) at clutter-feature.c:107
#8 0x00007fffcd6a5979 in clutter_init_real (error=error@entry=0x7fffffffd250) at clutter-main.c:1378
#9 0x00007fffcd6a5b80 in post_parse_hook (context=<optimised out>, group=<optimised out>, data=<optimised out>, error=0x7fffffffd250) at clutter-main.c:1550
#10 0x00007ffff5b65ef7 in g_option_context_parse (context=context@entry=0x885900, argc=argc@entry=0x0, argv=argv@entry=0x0, error=error@entry=0x7fffffffd250) at /build/glib2.0-SNH0tt/glib2.0-2.47.6/./glib/goption.c:2169
#11 0x00007fffcd6a6928 in clutter_init (error=0x7fffffffd248, argv=0x0, argc=0x0) at clutter-main.c:1770
#12 0x00007fffcd6a6928 in clutter_init (argc=0x0, argv=0x0) at clutter-main.c:1832
#13 0x00007fffce1d84fc in cheese_gtk_init () at /usr/lib/x86_64-linux-gnu/libcheese-gtk.so.25
#14 0x00007fffce850ef3 in g_io_module_load (module=0xa231e0 [GIOModule]) at um-user-module.c:38
#15 0x00007ffff60d5ef6 in g_io_module_load_module (gmodule=0xa231e0 [GIOModule]) at /build/glib2.0-SNH0tt/glib2.0-2.47.6/./gio/giomodule.c:320
#16 0x00007ffff5e586a1 in g_type_module_use (module=module@entry=0xa231e0 [GIOModule]) at /build/glib2.0-SNH0tt/glib2.0-2.47.6/./gobject/gtypemodule.c:244
#17 0x00007ffff60d62d5 in g_io_modules_load_all_in_directory_with_scope (dirname=dirname@entry=0x40c980 "/usr/lib/x86_64-linux-gnu/unity-control-center-1/panels", scope=scope@entry=0x0)
at /build/glib2.0-SNH0tt/glib2.0-2.47.6/./gio/giomodule.c:602
#18 0x00007ffff60d6347 in g_io_modules_load_all_in_directory (dirname=dirname@entry=0x40c980 "/usr/lib/x86_64-linux-gnu/unity-control-center-1/panels") at /build/glib2.0-SNH0tt/glib2.0-2.47.6/./gio/giomodule.c:641
#19 0x000000000040a44a in gnome_control_center_init (shell=0x682240 [GnomeControlCenter]) at gnome-control-center.c:1088
#20 0x000000000040a44a in gnome_control_center_init (self=0x682240 [GnomeControlCenter]) at gnome-control-center.c:1632
#21 0x00007ffff5e55359 in g_type_create_instance (type=<optimised out>) at /build/glib2.0-SNH0tt/glib2.0-2.47.6/./gobject/gtype.c:1875
#22 0x00007ffff5e3731b in g_object_new_internal (class=class@entry=0x6ff200, params=params@entry=0x0, n_params=n_params@entry=0) at /build/glib2.0-SNH0tt/glib2.0-2.47.6/./gobject/gobject.c:1781
#23 0x00007ffff5e38c01 in g_object_newv (object_type=object_type@entry=7426096, n_parameters=n_parameters@entry=0, parameters=parameters@entry=0x0) at /build/glib2.0-SNH0tt/glib2.0-2.47.6/./gobject/gobject.c:1928
#24 0x00007ffff5e39534 in g_object_new (object_type=7426096, first_property_name=first_property_name@entry=0x0) at /build/glib2.0-SNH0tt/glib2.0-2.47.6/./gobject/gobject.c:1621
#25 0x000000000040ad79 in gnome_control_center_new () at gnome-control-center.c:1649
#26 0x0000000000407546 in main (argc=1, argv=0x7fffffffd7c8) at control-center.c:334