Hello.
I update my Debian 8 x64 and after it Libreoffice can't start and don't show any error.
My logs are :

$ sudo tail messages
Aug 15 21:00:55 debian /etc/gdm3/Xsession[1353]: Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
Aug 15 21:02:39 debian /etc/gdm3/Xsession[1353]: Window manager warning: Log level 8: Source ID 499 was not found when attempting to remove it
Aug 15 21:02:41 debian /etc/gdm3/Xsession[1353]: Window manager warning: Log level 8: Source ID 501 was not found when attempting to remove it
Aug 15 21:02:43 debian kernel: [ 997.298001] soffice.bin[2770]: segfault at 7f7693cc2760 ip 00007f76766cc18f sp 00007ffe1185a030 error 6 in ld-2.19.so[7f76766c1000+20000]
Aug 15 21:02:59 debian /etc/gdm3/Xsession[1353]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x3200004 specified for 0x3200002 (wps).
Aug 15 21:03:44 debian kernel: [ 1059.247976] soffice.bin[2805]: segfault at 7fcb1df65760 ip 00007fcb0096f18f sp 00007fff42bce600 error 6 in ld-2.19.so[7fcb00964000+20000]
Aug 15 21:03:56 debian kernel: [ 1070.265194] soffice.bin[2835]: segfault at 7fb58c163760 ip 00007fb56eb6d18f sp 00007ffe5838c9e0 error 6 in ld-2.19.so[7fb56eb62000+20000]
Aug 15 21:05:58 debian kernel: [ 1192.614579] perf interrupt took too long (2505 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
Aug 15 21:06:27 debian /etc/gdm3/Xsession[1353]: (gedit:2926): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:63:17: Theming engine 'unico' not found
Aug 15 21:06:30 debian /etc/gdm3/Xsession[1353]: (gedit:2926): Gtk-WARNING **: Calling Inhibit failed: GDBus.Errorrg.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files


Any idea?

please post the error form trying to launch LO
also WHAT version ol lo is this?
libreoffice 5 or 4 or an antique libreoffice 3 version

for the LO NOT from the Debian repos !!!
but the deb from Libreoffices web site
-- change the program VERSION to your installed version

Try running LibreOffice from a terminal. You will see error messages there.

As I said, Not show any error.

---------- Post added 08-16-15 at 12:35 PM ----------

I purge it and reinstall. Problem Solved.