Fedora 28: Connect to KDE desktop environment via XRDP

Install KDE desktop environment with this.

Install XRDP.

$ sudo dnf install -y xrdp
$ sudo systemctl enable xrdp
$ sudo systemctl start xrdp

Create .Xclients in home directory of user to be connected.

$ echo "startkde" > ~/.Xclients
$ chmod a+x ~/.Xclients

After you connect to XRDP, the following dialog will be displayed.

This article makes all authentication to be failed and avoid Authentication Required dialog.

$ cat <<EOF | \
  sudo tee /etc/polkit-1/localauthority/50-local.d/xrdp-color-manager.pkla
[Netowrkmanager]
Identity=unix-user:*
Action=org.freedesktop.color-manager.create-device
ResultAny=no
ResultInactive=no
ResultActive=yes
EOF
$ cat <<EOF | \
  sudo tee /etc/polkit-1/localauthority/50-local.d/xrdp-NetworkManager.pkla
[Netowrkmanager]
Identity=unix-user:*
Action=org.freedesktop.NetworkManager.network-control
ResultAny=no
ResultInactive=yes
ResultActive=yes
EOF
$ cat <<EOF | \
  sudo tee /etc/polkit-1/localauthority/50-local.d/xrdp-packagekit.pkla
[Netowrkmanager]
Identity=unix-user:*
Action=org.freedesktop.packagekit.system-sources-refresh
ResultAny=no
ResultInactive=auth_admin
ResultActive=yes
EOF
$ sudo systemctl restart polkit

Use Xvnc as a session type. Windows Remote Desktop Connection is as the following.