diff --git a/Makefile b/Makefile
index de5d70a0e..c104979d5 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 NAME := $(or $(NAME),$(NAME),selenium)
 CURRENT_DATE := $(shell date '+%Y%m%d')
 BUILD_DATE := $(or $(BUILD_DATE),$(BUILD_DATE),$(CURRENT_DATE))
-VERSION := $(or $(VERSION),$(VERSION),4.0.0-alpha-6)
+VERSION := $(or $(VERSION),$(VERSION),4.0.0-alpha-7)
 TAG_VERSION := $(VERSION)-$(BUILD_DATE)
 NAMESPACE := $(or $(NAMESPACE),$(NAMESPACE),$(NAME))
 AUTHORS := $(or $(AUTHORS),$(AUTHORS),SeleniumHQ)
diff --git a/NodeBase/Dockerfile.txt b/NodeBase/Dockerfile.txt
index cea175113..f0a900f95 100644
--- a/NodeBase/Dockerfile.txt
+++ b/NodeBase/Dockerfile.txt
@@ -117,8 +117,7 @@ RUN sudo chmod -R 777 ${HOME} \
 #==============================
 # Scripts to run fluxbox and x11vnc
 #==============================
-COPY start-fluxbox.sh \
-      start-vnc.sh \
+COPY start-vnc.sh \
       /opt/bin/
 
 #============================
@@ -129,6 +128,7 @@ ENV SCREEN_HEIGHT 1020
 ENV SCREEN_DEPTH 24
 ENV SCREEN_DPI 96
 ENV DISPLAY :99.0
+ENV DISPLAY_NUM 99
 ENV START_XVFB true
 
 #========================
diff --git a/NodeBase/selenium.conf b/NodeBase/selenium.conf
index 32547c5e9..49f58b886 100644
--- a/NodeBase/selenium.conf
+++ b/NodeBase/selenium.conf
@@ -21,25 +21,6 @@ stderr_logfile_backups=5
 stdout_capture_maxbytes=50MB
 stderr_capture_maxbytes=50MB
 
-[program:fluxbox]
-priority=5
-command=/opt/bin/start-fluxbox.sh
-autostart=true
-autorestart=unexpected
-startsecs=0
-startretries=0
-
-;Logs
-redirect_stderr=false
-stdout_logfile=/var/log/supervisor/fluxbox-stdout.log
-stderr_logfile=/var/log/supervisor/fluxbox-stderr.log
-stdout_logfile_maxbytes=50MB
-stderr_logfile_maxbytes=50MB
-stdout_logfile_backups=5
-stderr_logfile_backups=5
-stdout_capture_maxbytes=50MB
-stderr_capture_maxbytes=50MB
-
 [program:vnc]
 priority=10
 command=/opt/bin/start-vnc.sh
diff --git a/NodeBase/start-fluxbox.sh b/NodeBase/start-fluxbox.sh
deleted file mode 100755
index 56e3d44ac..000000000
--- a/NodeBase/start-fluxbox.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/usr/bin/env bash
-#
-# IMPORTANT: Change this file only in directory NodeDebug!
-
-if [ "${START_XVFB}" = true ] ; then
-  fluxbox -display ${DISPLAY}
-else
-  echo "Fluxbox won't start because Xvfb is configured to not start."
-fi
diff --git a/NodeBase/start-vnc.sh b/NodeBase/start-vnc.sh
index a70cb8c81..b921af050 100755
--- a/NodeBase/start-vnc.sh
+++ b/NodeBase/start-vnc.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# IMPORTANT: Change this file only in directory NodeDebug!
+# IMPORTANT: Change this file only in directory NodeBase!
 
 if [ "${START_XVFB}" = true ] ; then
   if [ ! -z $VNC_NO_PASSWORD ]; then
@@ -20,8 +20,7 @@ if [ "${START_XVFB}" = true ] ; then
     echo "Waiting for Xvfb..."
   done
 
-  # -noxrecord fixes https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=859213 in x11vnc 0.9.13-2
-  x11vnc ${X11VNC_OPTS} -forever -shared -rfbport 5900 -display ${DISPLAY} -noxrecord
+  x11vnc ${X11VNC_OPTS} -forever -shared -rfbport 5900 -rfbportv6 5900 -display ${DISPLAY}
 else
   echo "Vnc won't start because Xvfb is configured to not start."
 fi
diff --git a/NodeBase/start-xvfb.sh b/NodeBase/start-xvfb.sh
index 4d2ed0f2c..d86c537ec 100755
--- a/NodeBase/start-xvfb.sh
+++ b/NodeBase/start-xvfb.sh
@@ -5,7 +5,14 @@ if [ "${START_XVFB}" = true ] ; then
 
   rm -f /tmp/.X*lock
 
-  /usr/bin/Xvfb ${DISPLAY} -screen 0 ${GEOMETRY} -dpi ${SCREEN_DPI} -ac +extension RANDR
+  # Command reference
+  # http://manpages.ubuntu.com/manpages/bionic/man1/xvfb-run.1.html
+  # http://manpages.ubuntu.com/manpages/bionic/man1/Xvfb.1.html
+  # http://manpages.ubuntu.com/manpages/bionic/man1/Xserver.1.html
+  /usr/bin/xvfb-run --server-num=${DISPLAY_NUM} \
+    --listen-tcp \
+    --server-args="-screen 0 ${GEOMETRY} -dpi ${SCREEN_DPI} -listen tcp -noreset -ac +extension RANDR" \
+    /usr/bin/fluxbox -display ${DISPLAY}
 else
-  echo "Xvfb won't start. Chrome/Firefox can only run in headless mode. Remember to set the 'headless' flag in your test."
+  echo "Xvfb and Fluxbox won't start. Chrome/Firefox/Opera can only run in headless mode. Remember to set the 'headless' flag in your test."
 fi
diff --git a/Standalone/selenium.conf b/Standalone/selenium.conf
index 055e2155c..d43952750 100644
--- a/Standalone/selenium.conf
+++ b/Standalone/selenium.conf
@@ -21,25 +21,6 @@ stderr_logfile_backups=5
 stdout_capture_maxbytes=50MB
 stderr_capture_maxbytes=50MB
 
-[program:fluxbox]
-priority=5
-command=/opt/bin/start-fluxbox.sh
-autostart=true
-autorestart=unexpected
-startsecs=0
-startretries=0
-
-;Logs
-redirect_stderr=false
-stdout_logfile=/var/log/supervisor/fluxbox-stdout.log
-stderr_logfile=/var/log/supervisor/fluxbox-stderr.log
-stdout_logfile_maxbytes=50MB
-stderr_logfile_maxbytes=50MB
-stdout_logfile_backups=5
-stderr_logfile_backups=5
-stdout_capture_maxbytes=50MB
-stderr_capture_maxbytes=50MB
-
 [program:vnc]
 priority=10
 command=/opt/bin/start-vnc.sh