Reading symbols from /lib64/libXau.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libXau.so.6
Reading symbols from /lib64/libdl.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libdl.so.2
0x00000037632f1c73 in epoll_wait () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install expat-2.1.0-1.fc17.x86_64 freetype-2.4.8-3.fc17.x86_64 glibc-2.15-58.fc17.x86_64 libX11-1.5.0-2.fc17.x86_64 libXau-1.0.6-3.fc17.x86_64 libXext-1.3.1-1.fc17.x86_64 libXrender-0.9.7-1.fc17.x86_64 libffi-3.0.10-2.fc17.x86_64 libjpeg-turbo-1.2.1-1.fc17.x86_64 libpng-1.5.10-1.fc17.x86_64 libxcb-1.9-1.fc17.x86_64 zlib-1.2.5-7.fc17.x86_64
(gdb) c
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x000000000040846d in output_handle_geometry (data=0x252f2d0, wl_output=0x2517f80, x=1366, y=0, physical_width=160, physical_height=90, subpixel=0,
    make=0x25436f0 "SAM", model=0x25436f8 "SyncMaster", transform=0) at desktop-shell.c:1095
1095            window_set_buffer_transform(output->panel->window, transform);
(gdb) inspect output
$1 = (struct output *) 0x252f2d0
(gdb) inspect output->panel
$2 = (struct panel *) 0x0
(gdb) bt full
#0  0x000000000040846d in output_handle_geometry (data=0x252f2d0, wl_output=0x2517f80, x=1366, y=0, physical_width=160, physical_height=90, subpixel=0,
    make=0x25436f0 "SAM", model=0x25436f8 "SyncMaster", transform=0) at desktop-shell.c:1095
        output = 0x252f2d0
#1  0x0000003765e05e90 in ffi_call_unix64 () from /lib64/libffi.so.5
No symbol table info available.
#2  0x0000003765e058a0 in ffi_call () from /lib64/libffi.so.5
No symbol table info available.
#3  0x00007f90ee56159c in wl_closure_invoke (closure=0x2543600, flags=1, target=0x2517f80, opcode=0, data=0x252f2d0) at connection.c:887
        count = 8
        ffi_types = {0x3765e06180, 0x3765e06180, 0x3765e061e0, 0x3765e061e0, 0x3765e061e0, 0x3765e061e0, 0x3765e061e0, 0x3765e06180, 0x3765e06180, 0x3765e061e0,
          0x7c00000077, 0x7fff7acfd5a0, 0x7fff7acfd5d0, 0x7f90ee55ebf4, 0x7fff7acfd620, 0x8, 0x2545130, 0x2452de0, 0xd8, 0xd1800405260, 0x7fff7acfd600, 0x7f90ee55ef04}
        implementation = 0x41e940
        cif = {abi = FFI_UNIX64, nargs = 10, arg_types = 0x7fff7acfd530, rtype = 0x3765e062a0, bytes = 32, flags = 0}
        ffi_args = {0x7fff7acfd4f0, 0x7fff7acfd4f8, 0x2543618, 0x2543620, 0x2543628, 0x2543630, 0x2543638, 0x2543640, 0x2543648, 0x2543650, 0x7acfd669,
          0x7f90ee563afd, 0x7fff7acfd670, 0x7f90ee563afc, 0x7fff7acfd6a0, 0x7f90ee55a9ef, 0x7fff7acfd6a0, 0x2543600, 0x7acfda69, 0x0, 0x0, 0x8ee5622bf}
#4  0x00007f90ee55ab90 in dispatch_event (display=0x2452c60, queue=0x2452ce8) at wayland-client.c:855
        closure = 0x2543600
        proxy = 0x2517f80
        opcode = 0
        proxy_destroyed = false
#5  0x00007f90ee55ae67 in dispatch_queue (display=0x2452c60, queue=0x2452ce8) at wayland-client.c:943
        count = 29
#6  0x00007f90ee55b1e8 in wl_display_dispatch_queue (display=0x2452c60, queue=0x2452ce8) at wayland-client.c:1120
        pfd = {{fd = 54, events = 1, revents = 1}, {fd = 38087928, events = 0, revents = 0}}
        ret = 0
#7  0x00007f90ee55b309 in wl_display_dispatch (display=0x2452c60) at wayland-client.c:1190
No locals.
#8  0x0000000000418bd7 in handle_display_data (task=0x2452b88, events=1) at window.c:4933
        display = 0x2452b10
        ep = {events = 2060441536, data = {ptr = 0x2452c6000007fff, fd = 32767, u32 = 32767, u64 = 163585752297406463}}
        ret = 0
#9  0x0000000000419a08 in display_run (display=0x2452b10) at window.c:5248
        i = 0
        count = 1
        ret = 72
        task = 0x2452b88
        ep = {{events = 1, data = {ptr = 0x2452b88, fd = 38087560, u32 = 38087560, u64 = 38087560}}, {events = 0, data = {ptr = 0x0, fd = 0, u32 = 0, u64 = 0}}, {
            events = 0, data = {ptr = 0x0, fd = 0, u32 = 0, u64 = 0}}, {events = 0, data = {ptr = 0x10000000, fd = 268435456, u32 = 268435456, u64 = 268435456}}, {
            events = 0, data = {ptr = 0x7acfda4000000000, fd = 0, u32 = 0, u64 = 8849531761219076096}}, {events = 32767, data = {ptr = 0x0, fd = 0, u32 = 0,
              u64 = 0}}, {events = 0, data = {ptr = 0x500000000, fd = 0, u32 = 0, u64 = 21474836480}}, {events = 0, data = {ptr = 0x0, fd = 0, u32 = 0, u64 = 0}}, {
            events = 1, data = {ptr = 0x630212a800007fff, fd = 32767, u32 = 32767, u64 = 7134285272472125439}}, {events = 55, data = {ptr = 0x8, fd = 8, u32 = 8,
              u64 = 8}}, {events = 38087856, data = {ptr = 0x24595f000000000, fd = 0, u32 = 0, u64 = 163701819493580800}}, {events = 0, data = {ptr = 0x98, fd = 152,
              u32 = 152, u64 = 152}}, {events = 0, data = {ptr = 0x6302160000000000, fd = 0, u32 = 0, u64 = 7134288948964098048}}, {events = 55, data = {
---Type <return> to continue, or q <return> to quit---
              ptr = 0x7fff7acfd790, fd = 2060441488, u32 = 2060441488, u64 = 140735253829520}}, {events = 2060441456, data = {ptr = 0x7acfda4000007fff, fd = 32767,
              u32 = 32767, u64 = 8849531761219108863}}, {events = 32767, data = {ptr = 0x7f90ed5df220, fd = -312610272, u32 = 3982357024, u64 = 140260434375200}}}
#10 0x0000000000408ae6 in main (argc=1, argv=0x7fff7acfda48) at desktop-shell.c:1245
        desktop = {display = 0x2452b10, shell = 0x24661c0, interface_version = 2, unlock_dialog = 0x0, unlock_task = {run = 0x407d3b <unlock_dialog_finish>, link = {
              prev = 0x0, next = 0x0}}, outputs = {prev = 0x24587e8, next = 0x252f2d8}, grab_window = 0x2459410, grab_widget = 0x2459630,
          grab_cursor = CURSOR_BOTTOM_LEFT, painted = 1}
        config_fd = 8
        output = 0x7fff7acfd910
        ret = 0
(gdb) c