Package: matrix-synapse Version: 0.99.2-2 Followup-For: Bug #920339 Still exists in the recent version. It seems that the server is spawned and disowned, and the configure script waits forever for some return value which never comes.
Also this output is not really happy: Setting up matrix-synapse (0.99.2-2) ... Traceback (most recent call last): File "/usr/lib/python3.7/runpy.py", line 193, in _run_module_as_main "__main__", mod_spec) File "/usr/lib/python3.7/runpy.py", line 85, in _run_code exec(code, run_globals) File "/usr/lib/python3/dist-packages/synapse/config/__main__.py", line 31, in <module> print(getattr(config, key)) AttributeError: 'HomeServerConfig' object has no attribute 'signing_key_path' chown: missing operand after 'matrix-synapse:nogroup' Try 'chown --help' for more information. chmod: missing operand after '0600' Try 'chmod --help' for more information. As a sidenote: _no_ systemd here. Sysvinit for your service, which may or may not relate to the problem; it is a completely valid config though.