Here's the backtrace I'm getting out of unity-greeter. Unfortunately there's no debug symbols available for it to find what's at the bottom of the stack trace.
#0 _g_log_abort (breakpoint=breakpoint@entry=1) at ././glib/gmessages.c:487 #1 0x00007ffff5c8a64d in g_logv (log_domain=0x7ffff5ccbd6e "GLib", log_level=G_LOG_LEVEL_ERROR, format=<optimized out>, args=args@entry=0x7fffffffd7c0) at ././glib/gmessages.c:1296 #2 0x00007ffff5c8a7af in g_log ( log_domain=log_domain@entry=0x7ffff5ccbd6e "GLib", log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=format@entry=0x7ffff5cd56c8 "%s: failed to allocate %lu bytes") at ././glib/gmessages.c:1337 #3 0x00007ffff5c88ed1 in g_realloc (mem=<optimized out>, n_bytes=131072) at ././glib/gmem.c:164 #4 0x00007ffff5c56869 in g_array_maybe_expand ( array=array@entry=0x55555590aa40, len=len@entry=40) at ././glib/garray.c:779 #5 0x00007ffff5c56be8 in g_array_append_vals (farray=0x55555590aa40, data=0x7fffffffd9a0, len=40) at ././glib/garray.c:418 #6 0x00007ffff5c57d09 in g_byte_array_append ( array=array@entry=0x55555590aa40, data=data@entry=0x7fffffffd9a0 "", len=len@entry=40) at ././glib/garray.c:1713 #7 0x00007ffff6f57d34 in alloc_tree (offset=<synthetic pointer>, array=0x55555590aa40) at ././gtk/gtkcssselector.c:1726 #8 subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555968020, parent_offset=parent_offset@entry=65392) at ././gtk/gtkcssselector.c:1779 #9 0x00007ffff6f57f73 in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555967f20, parent_offset=parent_offset@entry=65392) at ././gtk/gtkcssselector.c:1824 #10 0x00007ffff6f57f5c in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555967ec0, parent_offset=parent_offset@entry=65352) at ././gtk/gtkcssselector.c:1821 #11 0x00007ffff6f57f5c in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555968100, parent_offset=parent_offset@entry=65312) at ././gtk/gtkcssselector.c:1821 #12 0x00007ffff6f57f5c in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555967a20, parent_offset=parent_offset@entry=62904) at ././gtk/gtkcssselector.c:1821 #13 0x00007ffff6f57f73 in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555967740, parent_offset=parent_offset@entry=62904) at ././gtk/gtkcssselector.c:1824 #14 0x00007ffff6f57f73 in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555966b20, parent_offset=parent_offset@entry=62904) at ././gtk/gtkcssselector.c:1824 #15 0x00007ffff6f57f5c in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555961b80, parent_offset=parent_offset@entry=2147483647) at ././gtk/gtkcssselector.c:1821 #16 0x00007ffff6f57f73 in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555959a20, parent_offset=parent_offset@entry=2147483647) at ././gtk/gtkcssselector.c:1824 #17 0x00007ffff6f57f73 in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555953020, parent_offset=parent_offset@entry=2147483647) at ././gtk/gtkcssselector.c:1824 #18 0x00007ffff6f57f73 in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555938680, parent_offset=parent_offset@entry=2147483647) at ././gtk/gtkcssselector.c:1824 #19 0x00007ffff6f57f73 in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x55555592bb40, parent_offset=parent_offset@entry=2147483647) at ././gtk/gtkcssselector.c:1824 #20 0x00007ffff6f57f73 in subdivide_infos (array=array@entry=0x55555590aa40, infos=infos@entry=0x555555924ca0, parent_offset=parent_offset@entry=2147483647) at ././gtk/gtkcssselector.c:1824 #21 0x00007ffff6f57f73 in subdivide_infos (array=array@entry=0x55555590aa40, infos=<optimized out>, parent_offset=parent_offset@entry=2147483647) at ././gtk/gtkcssselector.c:1824 #22 0x00007ffff6f596c0 in _gtk_css_selector_tree_builder_build ( builder=builder@entry=0x555555867040) at ././gtk/gtkcssselector.c:1900 #23 0x00007ffff6f54e09 in gtk_css_provider_postprocess ( css_provider=0x55555580e6e0) at ././gtk/gtkcssprovider.c:1702 #24 gtk_css_provider_load_internal ( css_provider=css_provider@entry=0x55555580e6e0, parent=parent@entry=0x0, file=file@entry=0x555555858f20, text=<optimized out>, text@entry=0x0, error=error@entry=0x0) at ././gtk/gtkcssprovider.c:1791 #25 0x00007ffff6f559f2 in gtk_css_provider_load_from_file ( css_provider=css_provider@entry=0x55555580e6e0, file=file@entry=0x555555858f20, error=error@entry=0x0) at ././gtk/gtkcssprovider.c:1888 #26 0x00007ffff6f55a8e in gtk_css_provider_load_from_path ( css_provider=0x55555580e6e0, path=<optimized out>, error=0x0) at ././gtk/gtkcssprovider.c:1922 #27 0x00007ffff6f55d58 in _gtk_css_provider_load_named ( provider=0x55555580e6e0, name=<optimized out>, variant=<optimized out>) at ././gtk/gtkcssprovider.c:2162 #28 0x00007ffff7086926 in settings_update_theme ( settings=settings@entry=0x5555558130d0) at ././gtk/gtksettings.c:3227 #29 0x00007ffff7086d4d in settings_init_style (settings=0x5555558130d0) at ././gtk/gtksettings.c:1853 #30 gtk_settings_get_for_screen (screen=<optimized out>) at ././gtk/gtksettings.c:1904 #31 0x000055555558e2ca in ?? () #32 0x00007ffff46e13f1 in __libc_start_main (main=0x555555563e20, argc=1, argv=0x7fffffffeb98, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffeb88) at ../csu/libc-start.c:291 #33 0x0000555555563e5a in ?? () -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662244 Title: unity-greeter crashes causing lightdm to fail to start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1662244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs