login remote via xrdp gives empty screen or terminates immediately

[Thomas Schweikle]

trying to login using xrdp with module
- sessman-Xvnc -> empty screen with X11 default background
- sessman-X11rdp -> terminates after some time without any error message

Seen for lubuntu, xubuntu.
gnome and kde seem to work from time to time.

Adding $HOME/.xsession filled with "lxsession -s lubuntu -e LXDE" as suggested for lubuntu does not help.

Adding $HOME/.xsession filled with "xfce4-session", then changing line ". /etc/X11/Xsession" to "startxfce4" as suggested for xubuntu does not help.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xrdp 0.6.1-2
ProcVersionSignature: Ubuntu 4.4.0-72.93-generic 4.4.49
Uname: Linux 4.4.0-72-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
Date: Wed Apr 5 14:43:41 2017
InstallationDate: Installed on 2017-02-22 (41 days ago)
InstallationMedia: Lubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160720)
SourcePackage: xrdp
UpgradeStatus: No upgrade log present (probably fresh install)