Hello Cristian,
I have runned now and insted of "Reading symbols from /usr/bin/qbittorrent...Reading symbols from /usr/lib/debug/usr/bin/ qbittorrent...done. done. (gdb) set pagination 0 (gdb) thread apply all bt (gdb) run Starting program: /usr/bin/qbittorrent" I see "Reading symbols from /usr/bin/qbittorrent...Reading symbols from /usr/lib/debug/ usr/bin/qbittorrent...(no debugging symbols found)...done. (no debugging symbols found)...done. (gdb) Killed"