Running the ThinLinc 4.14.0 server on a SLES12 VM I managed to get tl-mount-localdrives to hang during session startup. This issue seems very racy and temperamental as I've had a hard time reproducing it. Nonetheless, out of sheer luck, I managed to reproduce it while running inside of pdb and managed to obtain the following stack trace: > (Pdb) bt > /usr/lib64/python3.4/runpy.py(170)_run_module_as_main() > -> "__main__", mod_spec) > /usr/lib64/python3.4/runpy.py(85)_run_code() > -> exec(code, run_globals) > /usr/lib64/python3.4/pdb.py(1688)<module>() > -> pdb.main() > /usr/lib64/python3.4/pdb.py(1661)main() > -> pdb._runscript(mainpyfile) > /usr/lib64/python3.4/pdb.py(1542)_runscript() > -> self.run(statement) > /usr/lib64/python3.4/bdb.py(431)run() > -> exec(cmd, globals, locals) > <string>(1)<module>() > /opt/thinlinc/bin/tl-mount-localdrives(9)<module>() > -> if 82 - 82: Iii1i > /opt/thinlinc/bin/tl-mount-localdrives(327)OoOOooO0oOO0Oo() > -> oo00 = OoOo ( "127.0.0.1" , i1iIIi1I1iiI ) > /opt/thinlinc/bin/tl-mount-localdrives(97)__init__() > -> self . mountcl . null ( ) > /opt/thinlinc/bin/tl-mount-localdrives(71)null() > -> self . make_call ( mount_const . MOUNTPROC3_NULL ) > /opt/thinlinc/bin/tl-mount-localdrives(61)make_call() > -> Iio0 , i1i = self . pipe . listen ( oOoo0 ) > /opt/thinlinc/modules/thinlinc/rpc/rpc.py(375)listen() > -> self._pending[xid].wait(timeout) > /opt/thinlinc/modules/thinlinc/rpc/rpc.py(150)wait() > -> self._filled.wait(timeout) > /usr/lib64/python3.4/threading.py(546)wait() > -> signaled = self._cond.wait(timeout) > > /usr/lib64/python3.4/threading.py(290)wait() > -> waiter.acquire() The issue was observed with a fresh ThinLinc install on an otherwise clean system. Looking at the client and xinit logs, nothing looks out of the ordinary.