.
Thread 2 (Thread 0x7fb2a3231700 (LWP 2747)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007fb2a3b0fbd9 in ?? () from /usr/lib/xorg/modules/drivers/intel_drv.so
No symbol table info available.
#2  0x00007fb2a69840a5 in start_thread (arg=0x7fb2a3231700) at pthread_create.c:309
        __res = <optimised out>
        pd = 0x7fb2a3231700
        now = <optimised out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140405217892096, 3632663667916091027, 0, 0, 140405217892800, 140405217892096, -3671394541092786541, -3671386511275643245}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimised out>
        pagesize_m1 = <optimised out>
        sp = <optimised out>
        freesize = <optimised out>
        __PRETTY_FUNCTION__ = "start_thread"
#3  0x00007fb2a752784d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
.
Thread 1 (Thread 0x7fb2a96c19c0 (LWP 2656)):
#0  0x00007fb2a98af64e in IgnoreClient ()
No symbol table info available.
#1  0x00007fb2a5c6015f in ?? () from /usr/lib/xorg/modules/extensions/libglx.so
No symbol table info available.
#2  0x00007fb2a5c66f56 in ?? () from /usr/lib/xorg/modules/extensions/libglx.so
No symbol table info available.
#3  0x00007fb2a978f0a5 in AbortDDX ()
No symbol table info available.
#4  0x00007fb2a98b97a2 in ?? ()
No symbol table info available.
#5  0x00007fb2a98ba60d in FatalError ()
No symbol table info available.
#6  0x00007fb2a98b18bc in ?? ()
No symbol table info available.
#7  <signal handler called>
No locals.
#8  0x00007fb2a97498eb in dixDestroyPixmap ()
No symbol table info available.
#9  0x00007fb2a9771062 in ?? ()
No symbol table info available.
#10 0x00007fb2a97720ec in FreeClientResources ()
No symbol table info available.
#11 0x00007fb2a974d580 in CloseDownClient ()
No symbol table info available.
#12 0x00007fb2a974e164 in ?? ()
No symbol table info available.
#13 0x00007fb2a97522a6 in ?? ()
No symbol table info available.
#14 0x00007fb2a744eec5 in __libc_start_main (main=0x7fb2a973c680, argc=11, argv=0x7fff16b62508, init=<optimised out>, fini=<optimised out>, rtld_fini=<optimised out>, stack_end=0x7fff16b624f8) at libc-start.c:287
        result = <optimised out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 3632663667916091027, 140405323843205, 140733574423808, 0, 0, -3632156158783181165, -3671384970789572973}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7fb2a98be3a0 <__libc_csu_init>, 0x7fff16b62508}, data = {prev = 0x0, cleanup = 0x0, canceltype = -1450450016}}}
        not_first_call = <optimised out>
#15 0x00007fb2a973c6ae in _start ()
No symbol table info available.