Hi @stephane-guillou, I also do have ubuntu 18.04 and I can't see this issue there.
helio@xps13ubuntu:~$ python3 Python 3.6.7 (default, Oct 22 2018, 11:32:17) [GCC 8.2.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> help('modules') Please wait a moment while I gather a list of all available modules... pygame 1.9.4 Hello from the pygame community. https://www.pygame.org/contribute.html AptUrl argparse imp runpy CommandNotFound array importlib scanext Crypto asn1crypto inspect sched DistUpgrade ast io scour HweSupportStatus astroid ipaddress secrets LanguageSelector asynchat isort secretstorage LibAppArmor asyncio itertools select NvidiaDetector asyncore janitor selectors Onboard atexit json selinux PIL audioop jwt setproctitle PyQt5 axi keyring setuptools Quirks base64 keyword shelve SSSDConfig bdb language_support_pkgs shlex UbuntuDrivers binascii lazy_object_proxy shutil UbuntuSystemService binhex lib2to3 signal UpdateManager bisect libfuturize sip Xlib blinker libpasteurize sipconfig __future__ blueman linecache sipconfig_nd6 _ast bs4 locale sipdistutils _asyncio bson logging site _bisect builtins lsb_release sitecustomize _blake2 bz2 lxml six _blueman cProfile lzma slip _bootlocale cairo macaroonbakery smtpd _bz2 calendar macpath smtplib _cffi_backend certifi macurl2path snack _codecs cgi magic snapshot-twitter _codecs_cn cgitb mailbox sndhdr _codecs_hk chardet mailcap socket _codecs_iso2022 chunk mako socketserver _codecs_jp cmath markupsafe softwareproperties _codecs_kr cmd marshal spwd _codecs_tw code math sqlite3 _collections codecs mccabe sre_compile _collections_abc codeop mimetypes sre_constants _compat_pickle collections mmap sre_parse _compression colorsys mock ssh_import_id _crypt compileall modulefinder ssl _csv concurrent multiprocessing stat _ctypes configparser nacl statistics _ctypes_test contextlib netifaces string _curses copy netrc stringprep _curses_panel copyreg nis struct _datetime crypt nntplib subprocess _dbm cryptography ntpath sunau _dbus_bindings csv nturl2path symbol _dbus_glib_bindings ctypes numbers symtable _decimal cups numpy sys _dummy_thread cupsext oauthlib sysconfig _elementtree cupshelpers opcode syslog _functools curl operator systemd _gdbm curses optparse tabnanny _hashlib datetime os tarfile _heapq dbm ossaudiodev telnetlib _imp dbus overlay-text tempfile _io deb822 parser termios _json debconf past test _locale debian pathlib textwrap _lsprof debian_bundle pbr this _lzma debianbts pcardext threading _markupbase debmake pdb time _md5 decimal pexpect timeit _multibytecodec decorator pickle tkinter _multiprocessing defer pickletools token _opcode devscripts picturequality tokenize _operator difflib pip trace _osx_support dis pipes traceback _pickle distro_info pkg_resources tracemalloc _posixsubprocess distro_info_test pkgutil tty _pydecimal distutils platform turtle _pyio doctest plistlib twitter _random dummy_threading poplib types _selinux easy_install posix typing _sha1 email posixpath unicodedata _sha256 encodings pprint unidiff _sha3 enum problem_report unittest _sha512 errno profile uno _signal faulthandler pstats unohelper _sitebuiltins fcntl psutil urllib _snack feedparser pty urllib3 _socket filecmp ptyprocess usbcreator _sqlite3 fileinput pwd uu _sre firewall py_compile uuid _ssl fnmatch pyclbr venv _stat formatter pycurl virtualenv _string fractions pydoc warnings _strptime ftplib pydoc_data wave _struct functools pyexpat weakref _symtable future pygame weather-twitter _sysconfigdata_m_linux_x86_64-linux-gnu gc pygame_camera webbrowser _testbuffer genericpath pygments webencodings _testcapi getopt pygtkcompat wheel _testimportmultiple getpass pylint wrapt _testmultiphase gettext pymacaroons wsgiref _thread gi pymongo xapian _threading_local glob pyrfc3339 xapp _tkinter gpg pysimplesoap xattr _tracemalloc graphviz pysss xdg _warnings gridfs pysss_murmur xdiagnose _weakref grp pytz xdot _weakrefset guake queue xdrlib _yaml gzip quopri xkit abc hashlib random xml aifc heapq re xmlrpc antigravity hmac readline xxlimited apparmor hpmudext reportbug xxsubtype apport html reportlab yaml apport_python_hook html5lib reprlib youtube_dl apt http requests zipapp apt_inst httplib2 requests_oauthlib zipfile apt_pkg idna requests_unixsocket zipimport aptdaemon imaplib resource zlib aptsources imghdr rlcompleter Enter any module name to get more help. Or, type "modules spam" to search for modules whose name or summary contain the string "spam". >>> import gtk >>> helio@xps13ubuntu:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.2 LTS Release: 18.04 Codename: bionic -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to pygtk in Ubuntu. https://bugs.launchpad.net/bugs/896836 Title: Segmentation fault when asking help() for the list of modules To manage notifications about this bug go to: https://bugs.launchpad.net/pygtk/+bug/896836/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs