Starting program: /usr/bin/gala --replace --display :0
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe5585700 (LWP 29049)]
[New Thread 0x7fffdeb01700 (LWP 29052)]
[New Thread 0x7fffde300700 (LWP 29054)]
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[Thread 0x7fffde300700 (LWP 29054) exited]
[Thread 0x7fffcd59b700 (LWP 29058) exited]
[New Thread 0x7fffcd59b700 (LWP 29226)]
[New Thread 0x7fffcd59b700 (LWP 29227)]
[Thread 0x7fffcd59b700 (LWP 29226) exited]
[Thread 0x7fffcd59b700 (LWP 29227) exited]
[New Thread 0x7fffcd59b700 (LWP 29228)]
[Thread 0x7fffcd59b700 (LWP 29228) exited]
[New Thread 0x7fffcd59b700 (LWP 29229)]
[Thread 0x7fffcd59b700 (LWP 29229) exited]
[New Thread 0x7fffcd59b700 (LWP 29230)]
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[Thread 0x7fffcd59b700 (LWP 29230) exited]
[Thread 0x7fffcd59b700 (LWP 29231) exited]
[New Thread 0x7fffcd59b700 (LWP 29232)]
[Thread 0x7fffcd59b700 (LWP 29232) exited]
[New Thread 0x7fffcd59b700 (LWP 29233)]
[Thread 0x7fffcd59b700 (LWP 29233) exited]
[New Thread 0x7fffcd59b700 (LWP 29234)]
[New Thread 0x7fffcd59b700 (LWP 29235)]
[Thread 0x7fffcd59b700 (LWP 29234) exited]
[Thread 0x7fffcd59b700 (LWP 29235) exited]
[New Thread 0x7fffcd59b700 (LWP 29239)]
[Thread 0x7fffcd59b700 (LWP 29239) exited]
[New Thread 0x7fffcd59b700 (LWP 29240)]
[Thread 0x7fffcd59b700 (LWP 29240) exited]
Thread 1 "gala" received signal SIGSEGV, Segmentation fault.
0x00007ffff75c62d4 in meta_window_get_monitor () from /usr/lib/libmutter.so.0
The history is empty.
No symbol "crash" in current context.
Tracepoint 1 at 0x7ffff75c62d4
#0  0x00007ffff75c62d4 in meta_window_get_monitor () from /usr/lib/libmutter.so.0
#1  0x0000000000439e2b in gala_multitasking_view_toggle (self=0xd4f2c0)
    at /build/gala-1TWkn2/gala-0.3.0~r521+pkg35~daily~ubuntu0.4.1/src/Widgets/MultitaskingView.vala:513
#2  0x000000000042b9bd in gala_window_manager_gala_real_perform_action (base=0x68f260, 
    type=<optimized out>)
    at /build/gala-1TWkn2/gala-0.3.0~r521+pkg35~daily~ubuntu0.4.1/src/WindowManager.vala:685
#3  0x0000000000426964 in ___lambda53_ (
    _data4_=0xa23a80)
    at /build/gala-1TWkn2/gala-0.3.0~r521+pkg35~daily~ubuntu0.4.1/src/WindowManager.vala:348
#4  ____lambda53__clutter_actor_enter_event
    (_sender=<optimized out>, 
    event=<optimized out>, self=0xa23a80)
    at WindowManager.c:2591
#5  0x00007ffff72e14dc in ?? ()
   from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#6  0x00007ffff4a69fa5 in g_closure_invoke
    ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7  0x00007ffff4a7bfc1 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8  0x00007ffff4a847f9 in g_signal_emit_valist ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9  0x00007ffff4a8508f in g_signal_emit ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007ffff7243d1c in clutter_actor_event ()
   from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#11 0x00007ffff7249180 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#12 0x00007ffff728281c in ?? ()
   from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#13 0x00007ffff7282f6e in ?? ()
   from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#14 0x00007ffff7299639 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#15 0x00007ffff72850e9 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#16 0x00007ffff4793127 in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007ffff4793380 in ?? ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007ffff47936a2 in g_main_loop_run
    ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007ffff75b869c in meta_run ()
   from /usr/lib/libmutter.so.0
#20 0x000000000041e154 in gala_main (
    args=0x7fffffffea58, args_length1=1)
    at /build/gala-1TWkn2/gala-0.3.0~r521+pkg35~daily~ubuntu0.4.1/src/Main.vala:65
#21 0x00007ffff3f76830 in __libc_start_main
    (main=0x416a10 <main>, argc=4, 
    argv=0x7fffffffea58, 
    init=<optimized out>, 
    fini=<optimized out>, 
    rtld_fini=<optimized out>, 
    stack_end=0x7fffffffea48)
    at ../csu/libc-start.c:291
#22 0x0000000000416a49 in _start ()
Starting program: /usr/bin/gala --replace --display :0
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe5585700 (LWP 29251)]
[New Thread 0x7fffdeb01700 (LWP 29252)]
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[New Thread 0x7fffbf9cc700 (LWP 29260)]
[Thread 0x7fffbf9cc700 (LWP 29260) exited]
[Thread 0x7fffcd59b700 (LWP 29258) exited]
[Thread 0x7fffde300700 (LWP 29254) exited]