I tried to attach the core file, but it was too big for the mail server. This is what I get with gdb.
$ gdb /usr/bin/Xwayland core GNU gdb (Debian 7.12-6+b1) 7.12.0.20161007-git Copyright (C) 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/bin/Xwayland...(no debugging symbols found)...done. [New LWP 2218] [New LWP 2225] [New LWP 2226] [New LWP 2230] [New LWP 2232] [New LWP 2229] [New LWP 2231] [New LWP 2227] [New LWP 2228] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `/usr/bin/Xwayland :0 -rootless -terminate -accessx -core -listen 4 -listen 5 -d'. Program terminated with signal SIGABRT, Aborted. #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 51 ../sysdeps/unix/sysv/linux/raise.c: No existe el fichero o el directorio. [Current thread is 1 (Thread 0x7f7cdbabd580 (LWP 2218))] (gdb) where #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 #1 0x00007f7cd8902231 in __GI_abort () at abort.c:79 #2 0x00005642194aaa5a in OsAbort () #3 0x00005642194b0573 in ?? () #4 0x00005642194b1395 in FatalError () #5 0x00005642193388bf in ?? () #6 0x00005642194a85d1 in ?? () #7 0x00005642194a15db in WaitForSomething () #8 0x000056421946d3e3 in ?? () #9 0x0000564219471680 in ?? () #10 0x00007f7cd88eda87 in __libc_start_main (main=0x564219337ee0, argc=12, argv=0x7ffed2ddec68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffed2ddec58) at ../csu/libc-start.c:310 #11 0x0000564219337f1a in _start () -- Saludos, Mu.
