Pipewire screencasting etc. fails on GNOME 3.26/Fedora 27
Following the instructions per https://wiki.gnome.org/Projects/Mutter/RemoteDesktop on Fedora 27 (tested on an installed system or directly on the live image) results in:
$ ./gnome-screen-cast.py Traceback (most recent call last): File "./gnome-screen-cast.py", line 51, in <module> session.Start(dbus_interface=screen_cast_session_iface) File "/usr/lib64/python3.6/site-packages/dbus/proxies.py", line 145, in __call__ **keywords) File "/usr/lib64/python3.6/site-packages/dbus/connection.py", line 651, in call_blocking message, timeout) dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Failed: Failed to start screen cast: Couldn't connect pipewire remote
Similar messages are logged when trying to connect via VNC.