chris@localhost:~$ sudo gdb nautilus 2>&1|tee ~/gdb-nautilus.txt [sudo] password for chris: GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later 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: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from nautilus...Reading symbols from /usr/lib/debug//usr/bin/nautilus...done. done. (gdb) handle SIG33 pass nostop noprint Signal Stop Print Pass to program Description SIG33 No No Yes Real-time event 33 (gdb) set pagination 0 (gdb) run nautilus Starting program: /usr/bin/nautilus nautilus [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7fffead02700 (LWP 6584)] (nautilus:6579): Gtk-WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files [New Thread 0x7fffe9288700 (LWP 6585)] [New Thread 0x7fffe887a700 (LWP 6586)] [New Thread 0x7fffd2ff6700 (LWP 6587)] [New Thread 0x7fffd1d9c700 (LWP 6588)] [New Thread 0x7fffc37b8700 (LWP 6591)] [Thread 0x7fffc37b8700 (LWP 6591) exited] [Thread 0x7fffd1d9c700 (LWP 6588) exited] [New Thread 0x7fffc37b8700 (LWP 6594)] [Thread 0x7fffe9288700 (LWP 6585) exited] [New Thread 0x7fffe9288700 (LWP 6596)] [Thread 0x7fffe9288700 (LWP 6596) exited] [New Thread 0x7fffe9288700 (LWP 6598)] [Thread 0x7fffe9288700 (LWP 6598) exited] [New Thread 0x7fffe9288700 (LWP 6606)] [Thread 0x7fffe9288700 (LWP 6606) exited] [New Thread 0x7fffe9288700 (LWP 6608)] [Thread 0x7fffe9288700 (LWP 6608) exited] [New Thread 0x7fffe9288700 (LWP 6610)] [Thread 0x7fffe9288700 (LWP 6610) exited] [New Thread 0x7fffe9288700 (LWP 6612)] [Thread 0x7fffe9288700 (LWP 6612) exited] [New Thread 0x7fffe9288700 (LWP 6614)] [Thread 0x7fffe9288700 (LWP 6614) exited] [New Thread 0x7fffe9288700 (LWP 6616)] [New Thread 0x7fffd1d9c700 (LWP 6617)] [New Thread 0x7fffc2fb7700 (LWP 6618)] [Thread 0x7fffc2fb7700 (LWP 6618) exited] [Thread 0x7fffd1d9c700 (LWP 6617) exited] [Thread 0x7fffc37b8700 (LWP 6594) exited] [New Thread 0x7fffc37b8700 (LWP 6620)] [New Thread 0x7fffd1d9c700 (LWP 6621)] [Thread 0x7fffc37b8700 (LWP 6620) exited] [Thread 0x7fffe9288700 (LWP 6616) exited] [New Thread 0x7fffe9288700 (LWP 6622)] [Thread 0x7fffd1d9c700 (LWP 6621) exited] Program received signal SIGSEGV, Segmentation fault. 0x00007ffff38d28f3 in _IO_vfprintf_internal (s=s@entry=0x7fffffffe080, format=, format@entry=0x4f454e "%s\n%s", ap=ap@entry=0x7fffffffe1f8) at vfprintf.c:1661 1661 vfprintf.c: No such file or directory. (gdb)