ubuntu@ubuntu:~$ gdb /usr/bin/ica GNU gdb (Ubuntu/Linaro 7.3-0ubuntu2) 7.3-2011.08 Copyright (C) 2011 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". For bug reporting instructions, please see: ... Reading symbols from /usr/bin/ica...(no debugging symbols found)...done. (gdb) run -noshm -isdport 5800 -ivsport 5900 -role other Starting program: /usr/bin/ica -noshm -isdport 5800 -ivsport 5900 -role other [Thread debugging using libthread_db enabled] (ica:4568): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap", (ica:4568): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap", (ica:4568): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap", (ica:4568): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap", [New Thread 0x7fffe2e0e700 (LWP 4571)] [New Thread 0x7fffe260d700 (LWP 4572)] Program received signal SIGSEGV, Segmentation fault. 0x00007fffe9e6f6dc in gtk_container_add () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 (gdb) bt #0 0x00007fffe9e6f6dc in gtk_container_add () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 #1 0x00007ffff6e99d1e in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #2 0x00007ffff6e9b82e in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #3 0x00007ffff6e9bfe8 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #4 0x00007ffff6e80169 in QGtkStyle::QGtkStyle() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #5 0x00007ffff6e042a7 in QStyleFactory::create(QString const&) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #6 0x00007ffff6b1b6c9 in QApplication::style() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #7 0x00007ffff6b1f415 in QApplicationPrivate::initialize() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #8 0x00007ffff6b1f54c in QApplicationPrivate::construct(_XDisplay*, unsigned long, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #9 0x00007ffff6b1fe21 in QApplication::QApplication(int&, char**, int) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4 #10 0x0000000000424895 in ?? () #11 0x00007ffff473530d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 #12 0x00000000004232b9 in ?? () #13 0x00007fffffffe1d8 in ?? () #14 0x000000000000001c in ?? () #15 0x0000000000000008 in ?? () #16 0x00007fffffffe4d3 in ?? () #17 0x00007fffffffe4e0 in ?? () #18 0x00007fffffffe4e7 in ?? () #19 0x00007fffffffe4f0 in ?? () #20 0x00007fffffffe4f5 in ?? () #21 0x00007fffffffe4fe in ?? () #22 0x00007fffffffe503 in ?? () #23 0x00007fffffffe509 in ?? () #24 0x0000000000000000 in ?? ()