SCRUM#356: Ensures Xorg / Xephyr execution

opt/le-multiterminal/multiseat-controller.sh

@@ -65,6 +65,20 @@ create_onboard_window () {
 		export DISPLAY=${DISPLAY_XORGS[$WINDOW_COUNTER]}
 
 		Xorg ${DISPLAY_XORGS[$WINDOW_COUNTER]} &
+		pid=$!
+		
+		# Guarantees the Xorg execution
+		xdpyinfo -display ${DISPLAY_XORGS[$WINDOW_COUNTER]}
+		EXIT_CODE=$?
+		while [[ $EXIT_CODE -ne 0 ]]; do 
+			sleep 0.5
+			xdpyinfo -display ${DISPLAY_XORGS[$WINDOW_COUNTER]}
+			EXIT_CODE=$?
+			if ! kill -0 "${pid}" >/dev/null 2>&1; then
+				Xorg ${DISPLAY_XORGS[$WINDOW_COUNTER]} &
+				pid=$!
+			fi
+		done
 
 		$CREATE_WINDOW
 		
@@ -85,9 +99,24 @@ create_secundarycard_windows () {
 
 		# Run Xephyr to type in this output
 		Xephyr ${DISPLAY_XORGS[$WINDOW_COUNTER]} -output $i -noxv &
+		pid=$!
+		
+		# Guarantees the Xephyr execution
+		xdpyinfo -display ${DISPLAY_XORGS[$WINDOW_COUNTER]}
+		EXIT_CODE=$?
+		while [[ $EXIT_CODE -ne 0 ]]; do 
+			sleep 0.5
+			xdpyinfo -display ${DISPLAY_XORGS[$WINDOW_COUNTER]}
+			EXIT_CODE=$?
+			if ! kill -0 "${pid}" >/dev/null 2>&1; then
+				Xephyr ${DISPLAY_XORGS[$WINDOW_COUNTER]} -output $i -noxv &
+				pid=$!
+			fi
+		done
 
 		# Export display and create a window to write on this output
 		export DISPLAY=${DISPLAY_XORGS[$WINDOW_COUNTER]}
+		
 		$CREATE_WINDOW
 
 		# Again: the fake_seat display needs to be exported
@@ -120,6 +149,7 @@ kill_jobs () {
 
 ############ BEGIN ############
 
+# Guarantees the fake-seat execution, used to access the secondary board
 Xorg $FAKE_DISPLAY -seat __fake-seat-1__ -dpms -s 0 -nocursor &
 pid=$!