Program received signal SIGSEGV, Segmentation fault.
0x00007f972c6b02f8 in udev_seat_get_named (input=0x1213960, seat_name=0x1224a50 "back0") at src/libinput-seat.c:347
347             wl_list_for_each(seat, &input->compositor->seat_list, base.link) {
#0  0x00007f972c6b02f8 in udev_seat_get_named (input=0x1213960, seat_name=0x1224a50 "back0") at src/libinput-seat.c:347
        seat = 0x0
#1  0x00007f972c6ace95 in setup_output_seat_constraint (ec=0x1213570, output=0x12258a0, s=0x1224a50 "back0") at src/compositor-drm.c:1848
        seat = 0x120c100
#2  0x00007f972c6ad3a7 in create_output_for_connector (ec=0x1213570, resources=0x1224100, connector=0x12242c0, x=0, y=0, drm_device=0x1215210) at src/compositor-drm.c:1961
        output = 0x12258a0
        drm_mode = 0x12242c0
        next = 0x407040 <_start>
        preferred = 0x0
        current = 0x5a000000a0
        configured = 0x100000002
        best = 0xb00000010
        m = 0xf00000001
        section = 0x120c040
        encoder = 0x5a000000a0
        crtc_mode = {clock = 19024496, hdisplay = 0, hsync_start = 0, hsync_end = 16, htotal = 0, hskew = 13, vdisplay = 0, vsync_start = 0, vsync_end = 0, vtotal = 0, vscan = 0, vrefresh = 0, flags = 0, type = 0,
          name = '\000' <repeats 12 times>, "\027\000\000\000\004\000\000\000\001\000\000\000\017\000\000\000\020\000\000"}
        modeline = {clock = 1364627552, hdisplay = 32767, hsync_start = 0, hsync_end = 28736, htotal = 64, hskew = 0, vdisplay = 0, vsync_start = 38352, vsync_end = 20822, vtotal = 32767, vscan = 0, vrefresh = 0, flags = 0, type = 0,
          name = "\000\000\000\000\224\066\237+\227\177\000\000\020K\"\001\000\000\000\000PJ\"\001\000\000\000\000\060\221VQ"}
        crtc = 0x100000002
        i = 0
        width = 0
        height = 0
        scale = 1
        name = "HDMI2", '\000' <repeats 11 times>, "\060\220VQ\377\177\000\000o6\237+\227\177\000"
        s = 0x1224a50 "back0"
        type_name = 0x7f972c6b8222 "HDMI"
        config = OUTPUT_CONFIG_PREFERRED
        transform = 0
#3  0x00007f972c6ae266 in create_outputs (ec=0x1213570, option_connector=0, drm_device=0x1215210) at src/compositor-drm.c:2236
        connector = 0x12242c0
        resources = 0x1224100
        i = 2
        x = 0
        y = 0
#4  0x00007f972c6af4a1 in drm_compositor_create (display=0x1209970, param=0x7fff515692d0, argc=0x7fff5156930c, argv=0x7fff515695d8, config=0x120a320) at src/compositor-drm.c:2786
        ec = 0x1213570
        section = 0x1209ae0
        drm_device = 0x1215210
        loop = 0x7fff515695d8
        path = 0x12153e0 "/sys/devices/pci0000:00/0000:00:02.0/drm/card0"
        key = 67
        __func__ = "drm_compositor_create"
#5  0x00007f972c6af93a in backend_init (display=0x1209970, argc=0x7fff5156930c, argv=0x7fff515695d8, config=0x120a320) at src/compositor-drm.c:2882
        param = {connector = 0, tty = 3, use_pixman = 0, seat_id = 0x7f972c6b7ef0 <default_seat> "seat0"}
        drm_options = {{type = WESTON_OPTION_INTEGER, name = 0x7f972c6b89a9 "connector", short_name = 0, data = 0x7fff515692d0}, {type = WESTON_OPTION_STRING, name = 0x7f972c6b8461 "seat", short_name = 0, data = 0x7fff515692e0}, {
            type = WESTON_OPTION_INTEGER, name = 0x7f972c6b89b3 "tty", short_name = 0, data = 0x7fff515692d4}, {type = WESTON_OPTION_BOOLEAN, name = 0x7f972c6b89b7 "current-mode", short_name = 0,
            data = 0x7f972c8bdba8 <option_current_mode>}, {type = WESTON_OPTION_BOOLEAN, name = 0x7f972c6b89c4 "use-pixman", short_name = 0, data = 0x7fff515692d8}}
#6  0x0000000000410afa in main (argc=1, argv=0x7fff515695d8) at src/compositor.c:4223
        ret = 0
        display = 0x1209970
        ec = 0x33415b8760 <main_arena>
        signals = {0x1209a90, 0x120a230, 0x120a280, 0x120a2d0}
        loop = 0x1209a00
        backend_init = 0x7f972c6af7d7 <backend_init>
        i = 0
        fd = 32767
        backend = 0x120b340 "/usr/share/X11/xkb"
        option_backend = 0x0
        shell = 0x0
        option_shell = 0x0
        modules = 0x3340c214c0 " \024\302@3"
        option_modules = 0x0
        log = 0x0
        server_socket = 0x0
        end = 0x7fff00000050 <Address 0x7fff00000050 out of bounds>
        idle_time = 300
        help = 0
        socket_name = 0x4231ba "wayland-0"
        version = 0
        config = 0x120a320
        section = 0x1209ae0
        primary_client = 0x1207010
        primary_client_destroyed = {link = {prev = 0x1, next = 0x0}, notify = 0x1}
        core_options = {{type = WESTON_OPTION_STRING, name = 0x4231c4 "backend", short_name = 66, data = 0x7fff51569470}, {type = WESTON_OPTION_STRING, name = 0x4231cc "shell", short_name = 0, data = 0x7fff51569460}, {
            type = WESTON_OPTION_STRING, name = 0x4231d2 "socket", short_name = 83, data = 0x7fff51569430}, {type = WESTON_OPTION_INTEGER, name = 0x4231d9 "idle-time", short_name = 105, data = 0x7fff5156943c}, {
            type = WESTON_OPTION_STRING, name = 0x4231e3 "modules", short_name = 0, data = 0x7fff51569450}, {type = WESTON_OPTION_STRING, name = 0x4231eb "log", short_name = 0, data = 0x7fff51569448}, {type = WESTON_OPTION_BOOLEAN,
            name = 0x4231ef "help", short_name = 104, data = 0x7fff51569438}, {type = WESTON_OPTION_BOOLEAN, name = 0x4231f4 "version", short_name = 0, data = 0x7fff5156942c}}
Missing separate debuginfos, use: debuginfo-install dbus-libs-1.6.12-8.fc20.x86_64 expat-2.1.0-7.fc20.x86_64 glibc-2.18-12.fc20.x86_64 libX11-1.6.1-1.fc20.x86_64 libXau-1.0.8-2.fc20.x86_64 libevdev-0.6-3.fc20.x86_64 libffi-3.0.13-5.fc20.x86_64 libgcc-4.8.2-7.fc20.x86_64 libgcrypt-1.6.1-1.fc21.x86_64 libgpg-error-1.12-1.fc20.x86_64 libpciaccess-0.13.2-1.fc20.x86_64 libstdc++-4.8.2-7.fc20.x86_64 libxcb-1.9.1-3.fc20.x86_64 libxkbcommon-0.3.1-1.fc20.x86_64 mtdev-1.1.4-1.fc20.x86_64 pixman-0.30.0-3.fc20.x86_64 systemd-libs-210-7.fc21.x86_64 xz-libs-5.1.2-6alpha.fc20.x86_64