#0  0x00007fcae14c43b5 in __GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = 0
        pid = <optimized out>
        selftid = <optimized out>
#1  0x00007fcae14c7b1b in __GI_abort () at abort.c:92
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x112, sa_sigaction = 0x112}, sa_mask = {__val = {140509341200897, 140509155273360, 140509341192794, 140733868966576, 140509340196098, 274, 206158430232, 140733868966592, 140733868966368, 4, 206158430256, 38100624, 140509343547840, 38100721, 0, 140733868972775}}, sa_flags = -513895846, sa_restorer = 0x7fcad649aa68}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fcae14bcd2d in __GI___assert_fail (assertion=0x7fcad649aa88 "0", file=<optimized out>, line=274, function=<optimized out>) at assert.c:81
        buf = 0x2455e90 "compiz: ../../nouveau/nouveau_pushbuf.c:274: nouveau_pushbuf_flush: asserzione \"0\" non riuscita.\n"
#3  0x00007fcad649926e in nouveau_pushbuf_flush (chan=0x1883260, min=0) at ../../nouveau/nouveau_pushbuf.c:274
        nvdev = <optimized out>
        nvchan = 0x1883260
        nvpb = 0x1883398
        req = {channel = 3, nr_buffers = 23, buffers = 25716384, nr_relocs = 85, nr_push = 1, relocs = 25757360, push = 25703432, suffix0 = 131072, suffix1 = 0, vram_available = 57294848, gart_available = 66830336}
        i = <optimized out>
        ret = -16
        __PRETTY_FUNCTION__ = "nouveau_pushbuf_flush"
#4  0x00007fcad61ac392 in st_glFlush (ctx=<optimized out>) at state_tracker/st_cb_flush.c:126
        st = 0x1957890
#5  0x00007fcad7a6cc30 in PrivateGLScreen::waitForVideoSync() () from /tmp/tmpWewUK2/usr/lib/compiz/libopengl.so
No symbol table info available.
#6  0x00007fcad7a6ce19 in PrivateGLScreen::paintOutputs(std::list<CompOutput*, std::allocator<CompOutput*> >&, unsigned int, CompRegion const&) () from /tmp/tmpWewUK2/usr/lib/compiz/libopengl.so
No symbol table info available.
#7  0x00007fcad7c92e59 in CompositeScreen::paint(std::list<CompOutput*, std::allocator<CompOutput*> >&, unsigned int) () from /tmp/tmpWewUK2/usr/lib/compiz/libcomposite.so
No symbol table info available.
#8  0x00007fcad7c946cf in CompositeScreen::handlePaintTimeout() () from /tmp/tmpWewUK2/usr/lib/compiz/libcomposite.so
No symbol table info available.
#9  0x0000000000424d5b in CompTimer::triggerCallback() ()
No symbol table info available.
#10 0x0000000000424e92 in CompTimeoutSource::callback() ()
No symbol table info available.
#11 0x000000000042438d in CompTimeoutSource::dispatch(sigc::slot_base*) ()
No symbol table info available.
#12 0x00007fcae2b2e48f in Glib::Source::dispatch_vfunc (callback=<optimized out>, user_data=<optimized out>) at main.cc:906
        self = <optimized out>
        callback_data = <optimized out>
        __PRETTY_FUNCTION__ = "static gboolean Glib::Source::dispatch_vfunc(GSource*, GSourceFunc, void*)"
#13 0x00007fcae26386ca in g_main_dispatch (context=0x16fa6f0) at /build/buildd/glib2.0-2.31.8/./glib/gmain.c:2513
        dispatch = 0x7fcae2b2e440 <Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*)>
        was_in_call = 0
        user_data = 0x1842650
        callback = 0x7fcae2b2e530 <(anonymous namespace)::glibmm_dummy_source_callback(void*)>
        cb_funcs = 0x7fcae28e29a0
        cb_data = 0x18429f0
        current_source_link = {data = 0x1842780, next = 0x0}
        need_destroy = <optimized out>
        source = 0x1842780
        current = 0x17f01b0
        i = <optimized out>
#14 g_main_context_dispatch (context=0x16fa6f0) at /build/buildd/glib2.0-2.31.8/./glib/gmain.c:3050
No locals.
#15 0x00007fcae2638a90 in g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x16fa6f0, self=<optimized out>) at /build/buildd/glib2.0-2.31.8/./glib/gmain.c:3121
        timeout = 1
        some_ready = 1
        fds = <optimized out>
        max_priority = 2147483647
        nfds = 13
        allocated_nfds = <optimized out>
#16 g_main_context_iterate (context=0x16fa6f0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.8/./glib/gmain.c:3058
        some_ready = 1
#17 0x00007fcae2638e8a in g_main_loop_run (loop=0x18439a0) at /build/buildd/glib2.0-2.31.8/./glib/gmain.c:3315
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#18 0x000000000042e856 in CompScreen::eventLoop() ()
No symbol table info available.
#19 0x000000000042221a in main ()
No symbol table info available.