Bug#880601: gdm fails to give wayland an Xauthority file, preventing running applications as root

[Phil Susi]

Package: gdm3
Version: 3.26.1-3

The man page for gdm3 states that it will create an XAUTHORITY file in
/var/run/gdm3 and set the environment variable to point to it.  It does
not do this when running wayland.  Instead it leaves Xwayland configured
to allow connections only from local processes running as the same user
ID.  This prevents you from being able to run X applications as root,
such as gparted or synaptic.  It also means that two users on two
different terminals using a shared/guest UID can interfere with one
another's X session, making it a security issue as well.

Please restore the sane XAUTHORITY settings under Xwayland.


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