[Bug 1652282] Re: Xwayland not using XAUTHORITY, prevents root applications from connecting

[Dave Stroud]

Wayland is now looking into this Dont know what they will do yet.In the
meantime I have found that if you insert (xhost si:localuser:root) into
start up applications  it will work without having to do it in terminal
every time you start up.

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Title:
  Xwayland not using XAUTHORITY, prevents root applications from
  connecting

Status in gdm:
  Confirmed
Status in GParted:
  Fix Released
Status in Ubuntu GNOME:
  Triaged
Status in wayland:
  New
Status in gparted package in Ubuntu:
  Invalid

Bug description:
  When running wayland, GDM fails to set up an XAUTHORITY file and instead
  relies on the process UID for authentication.  This prevents
  applications run as root, like gparted or synaptic from connecting to
  the server.  GDM needs to set up the XAUTHORITY file when running
  Xwayland just like it does when it runs the conventional Xorg.

  A large list of applications broken by this can be found here:

  https://codesearch.debian.net/search?q=Exec%3Dsu-to-
  root+filetype%3Adesktop+path%3A*%2Fapplications%2F*&perpkg=1

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