xrdp shows static gray screen via remmina or vinagre

[penalvch]

1) lsb_release -rd
Description: Ubuntu 14.04 LTS
Release: 14.04

2) apt-cache policy gnome-session
gnome-session:
  Installed: 3.9.90-0ubuntu12
  Candidate: 3.9.90-0ubuntu12
  Version table:
 *** 3.9.90-0ubuntu12 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

apt-cache policy gnome-session-fallback
gnome-session-fallback:
  Installed: 1:3.8.0-1ubuntu12.1
  Candidate: 1:3.8.0-1ubuntu12.1
  Version table:
 *** 1:3.8.0-1ubuntu12.1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/universe amd64 Packages
        100 /var/lib/dpkg/status
     1:3.8.0-1ubuntu11 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages

apt-cache policy xrdp
xrdp:
  Installed: 0.6.0-1
  Candidate: 0.6.0-1
  Version table:
 *** 0.6.0-1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
        100 /var/lib/dpkg/status

apt-cache policy remmina
remmina:
  Installed: 1.0.0-4ubuntu3
  Candidate: 1.0.0-4ubuntu3
  Version table:
 *** 1.0.0-4ubuntu3 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

apt-cache policy vinagre
vinagre:
  Installed: 3.10.2-0ubuntu1
  Candidate: 3.10.2-0ubuntu1
  Version table:
 *** 3.10.2-0ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
        100 /var/lib/dpkg/status

3) What is expected to happen is when one installs xrdp on the host and attempts to use remmina or vinagre on a Ubuntu 14.04 client to RDP in, it works.

4) What happens instead is it shows a gray static screen as per attached screenshot. This would appear an issue with gnome-session as per client log:
cat .xsession-errors.old
Script for ibus started at run_im.
Script for auto started at run_im.
Script for default started at run_im.
init: indicator-application main process ended, respawning
init: indicator-application main process ended, respawning
init: indicator-application respawning too fast, stopped
Xsession: X session started for at Sun Jul 20 15:25:59 CDT 2014
X Error of failed request: BadValue (integer parameter out of range for operation)
  Major opcode of failed request: 109 (X_ChangeHosts)
  Value in failed request: 0x5
  Serial number of failed request: 6
  Current serial number in output stream: 8
localuser:moniker being added to access control list
X Error of failed request: BadValue (integer parameter out of range for operation)
  Major opcode of failed request: 109 (X_ChangeHosts)
  Value in failed request: 0x5
  Serial number of failed request: 6
  Current serial number in output stream: 8
Script for ibus started at run_im.
Script for auto started at run_im.
Script for default started at run_im.
Script for ibus started at run_im.
Script for auto started at run_im.
Script for default started at run_im.
gnome-session-is-accelerated: No composite extension.
gnome-session-check-accelerated: Helper exited with code 256
gnome-session-is-accelerated: No composite extension.
gnome-session-check-accelerated: Helper exited with code 256

** (process:2565): WARNING **: software acceleration check failed: Child process exited with code 1

** (x-session-manager:2565): CRITICAL **: We failed, but the fail whale is dead. Sorry....

The following is not a WORKAROUND, create /etc/xorg.conf :
Section "Device"
   Identifier "Intel Graphics"
   Driver "Intel"
   Option "DRI" "False"
EndSection

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gnome-session 3.9.90-0ubuntu12
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Jul 20 15:35:23 2014
InstallationDate: Installed on 2014-06-22 (28 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: gnome-session
UpgradeStatus: No upgrade log present (probably fresh install)

[penalvch (penalvch)]

Screenshot of remmina RDP attempt.