diff --git a/ChangeLog b/ChangeLog
index 46b5d7c..f4cea76 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -8,6 +8,7 @@ Key:
 v.0.5dev (ongoing development)
  * Update driver includes and LDFLAGS (fixed glk and bayrad binding error)
  * Modify all drivers to use server/drivers/report.h instead of shared/report.h
+ * Make all drivers using parallel port fail if they cannot get IO permission
 
 v0.5.3
  + lcdexec: notification when called program finishes
diff --git a/server/drivers/hd44780-4bit.c b/server/drivers/hd44780-4bit.c
index 2640397..549b3e5 100644
--- a/server/drivers/hd44780-4bit.c
+++ b/server/drivers/hd44780-4bit.c
@@ -64,8 +64,9 @@
 #include "hd44780-4bit.h"
 #include "hd44780-low.h"
 #include "lpt-port.h"
-
 #include "port.h"
+#include "report.h"
+
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
@@ -109,7 +110,11 @@ hd_init_4bit(Driver *drvthis)
 	int enableLines = EN1 | EN2 | ((p->numDisplays == 3) ? EnMask[2] : 0);
 
 	// Reserve the port registers
-	port_access_multiple(p->port,3);
+	if (port_access_multiple(p->port,3)) {
+		report(RPT_ERR, "%s: cannot get IO-permission for 0x%03X: %s",
+				drvthis->name, p->port, strerror(errno));
+		return -1;
+	}
 
 	hd44780_functions->senddata = lcdstat_HD44780_senddata;
 	hd44780_functions->backlight = lcdstat_HD44780_backlight;
diff --git a/server/drivers/hd44780-ext8bit.c b/server/drivers/hd44780-ext8bit.c
index 694ab29..5235908 100644
--- a/server/drivers/hd44780-ext8bit.c
+++ b/server/drivers/hd44780-ext8bit.c
@@ -55,9 +55,10 @@
 #include "hd44780-ext8bit.h"
 #include "hd44780-low.h"
 #include "lpt-port.h"
-
 #include "port.h"
 #include "lcd_sem.h"
+#include "report.h"
+
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
@@ -97,7 +98,11 @@ hd_init_ext8bit(Driver *drvthis)
 	semid = sem_get();
 
 	// Reserve the port registers
-	port_access_multiple(p->port,3);
+	if (port_access_multiple(p->port,3)) {
+		report(RPT_ERR, "%s: cannot get IO-permission for 0x%03X: %s",
+				drvthis->name, p->port, strerror(errno));
+		return -1;
+	}
 
 	hd44780_functions->senddata = lcdtime_HD44780_senddata;
 	hd44780_functions->backlight = lcdtime_HD44780_backlight;
diff --git a/server/drivers/hd44780-serialLpt.c b/server/drivers/hd44780-serialLpt.c
index 807e0b6..c921c31 100644
--- a/server/drivers/hd44780-serialLpt.c
+++ b/server/drivers/hd44780-serialLpt.c
@@ -53,8 +53,9 @@
 #include "hd44780-serialLpt.h"
 #include "hd44780-low.h"
 #include "lpt-port.h"
-
 #include "port.h"
+#include "report.h"
+
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
@@ -89,7 +90,11 @@ hd_init_serialLpt(Driver *drvthis)
 	unsigned char enableLines = EN1 | EN2;
 
 	// Reserve the port registers
-	port_access_multiple(p->port,3);
+	if (port_access_multiple(p->port,3)) {
+		report(RPT_ERR, "%s: cannot get IO-permission for 0x%03X: %s",
+				drvthis->name, p->port, strerror(errno));
+		return -1;
+	}
 
 	hd44780_functions->senddata = lcdserLpt_HD44780_senddata;
 	hd44780_functions->backlight = lcdserLpt_HD44780_backlight;
diff --git a/server/drivers/hd44780-winamp.c b/server/drivers/hd44780-winamp.c
index 25664e1..0731335 100644
--- a/server/drivers/hd44780-winamp.c
+++ b/server/drivers/hd44780-winamp.c
@@ -125,7 +125,11 @@ hd_init_winamp(Driver *drvthis)
 	}
 
 	// Reserve the port registers
-	port_access_multiple(p->port,3);
+	if (port_access_multiple(p->port,3)) {
+		report(RPT_ERR, "%s: cannot get IO-permission for 0x%03X: %s",
+				drvthis->name, p->port, strerror(errno));
+		return -1;
+	}
 
 	hd44780_functions->senddata = lcdwinamp_HD44780_senddata;
 	hd44780_functions->backlight = lcdwinamp_HD44780_backlight;
diff --git a/server/drivers/sed1330.c b/server/drivers/sed1330.c
index 4f76ee9..5b46650 100644
--- a/server/drivers/sed1330.c
+++ b/server/drivers/sed1330.c
@@ -531,9 +531,11 @@ sed1330_init( Driver * drvthis )
 
 	// Arrange for access to port
 	debug(RPT_DEBUG, "%s: getting port access", __FUNCTION__);
-	port_access(p->port);
-	port_access(p->port+1);
-	port_access(p->port+2);
+	if (port_access_multiple(p->port,3)) {
+		report(RPT_ERR, "%s: cannot get IO-permission for 0x%03X: %s",
+				drvthis->name, p->port, strerror(errno));
+		return -1;
+	}
 
 	if (timing_init() == -1) {
 		report(RPT_ERR, "%s: timing_init() failed (%s)",
diff --git a/server/drivers/t6963.c b/server/drivers/t6963.c
index 3c0c159..8d88f47 100644
--- a/server/drivers/t6963.c
+++ b/server/drivers/t6963.c
@@ -119,13 +119,13 @@ t6963_init (Driver *drvthis)
 	/* -- Get permission to parallel port --------------------------------------------*/
 	debug(RPT_DEBUG, "T6963: Getting permission to parallel port %d...", p->port);
 
-        if (port_access_multiple(p->port, 3)) {   //ioperm(p->port, 3, 1)) {
+        if (port_access_multiple(p->port, 3)) {
 		report(RPT_ERR, "%s: no permission to port 0x%03X: (%s)",
 				drvthis->name, p->port, strerror(errno));
                	return -1;
         }
 
-        if (port_access(0x80)) {	//ioperm(0x80, 1, 1)) {
+        if (port_access(0x80)) {
 	       report(RPT_ERR, "%s: no permission to port 0x80: (%s)",
 			       drvthis->name, strerror(errno));
                 return -1;