diff -up cups-1.3.3/backend/ieee1284.c.libieee1284 cups-1.3.3/backend/ieee1284.c
--- cups-1.3.3/backend/ieee1284.c.libieee1284	2007-07-11 22:46:42.000000000 +0100
+++ cups-1.3.3/backend/ieee1284.c	2007-10-09 17:00:54.000000000 +0100
@@ -32,6 +32,8 @@
 #  include <linux/lp.h>
 #  define IOCNR_GET_DEVICE_ID		1
 #  define LPIOC_GET_DEVICE_ID(len)	_IOC(_IOC_READ, 'P', IOCNR_GET_DEVICE_ID, len)
+#  include <ieee1284.h>
+#  include <dlfcn.h>
 #endif /* __linux */
 
 #ifdef __sun
@@ -93,11 +95,10 @@ backendGetDeviceID(
   if (make_model)
     *make_model = '\0';
 
-  if (uri)
-    *uri = '\0';
-
   if (fd >= 0)
   {
+    int got_id = 0;
+
    /*
     * Get the device ID string...
     */
@@ -105,7 +106,66 @@ backendGetDeviceID(
     *device_id = '\0';
 
 #ifdef __linux
-    if (!ioctl(fd, LPIOC_GET_DEVICE_ID(device_id_size), device_id))
+    if (ioctl(fd, LPIOC_GET_DEVICE_ID(device_id_size), device_id))
+    {
+#  ifdef DEBUG
+      printf("backendGetDeviceID: ioctl failed - %s\n", strerror(errno));
+#  endif /* DEBUG */
+
+      if (!strcmp (scheme, "parallel"))
+      {
+	struct parport_list ports;
+	int i;
+	const char *n;
+	int (*find_ports) (struct parport_list *, int);
+	void (*free_ports) (struct parport_list *);
+	ssize_t (*get_deviceid) (struct parport *, int, int,
+				 char *, size_t);
+	void *libieee1284;
+
+	libieee1284 = dlopen ("libieee1284.so", RTLD_LAZY);
+	if (libieee1284)
+	{
+	  dlerror ();
+	  find_ports = dlsym (libieee1284, "ieee1284_find_ports");
+	  free_ports = dlsym (libieee1284, "ieee1284_free_ports");
+	  get_deviceid = dlsym (libieee1284, "ieee1284_get_deviceid");
+	  if (dlerror () != NULL)
+	  {
+	    dlclose (libieee1284);
+	    libieee1284 = NULL;
+	  }
+	}
+
+	if (libieee1284)
+	{
+	  n = uri + strcspn (uri, "0123456789");
+	  if (n && *n && (*find_ports) (&ports, 0) == E1284_OK)
+	  {
+	    for (i = 0; i < ports.portc; i++)
+	    {
+	      const char *filename = ports.portv[i]->filename;
+	      if (!strncmp (filename, "/dev/parport", 12) &&
+		  !strcmp (filename + 12, n))
+	      {
+		device_id_size = (*get_deviceid) (ports.portv[i], -1,
+						  F1284_FRESH, device_id,
+						  device_id_size);
+		got_id = 1;
+		break;
+	      }
+	    }
+
+	    (*free_ports) (&ports);
+	    dlclose (libieee1284);
+	  }
+	}
+      }
+    }
+    else
+      got_id = 1;
+
+    if (got_id)
     {
      /*
       * Extract the length of the device ID string from the first two
@@ -136,10 +196,6 @@ backendGetDeviceID(
       memmove(device_id, device_id + 2, length);
       device_id[length] = '\0';
     }
-#  ifdef DEBUG
-    else
-      printf("backendGetDeviceID: ioctl failed - %s\n", strerror(errno));
-#  endif /* DEBUG */
 #endif /* __linux */
 
 #if defined(__sun) && defined(ECPPIOC_GETDEVID)
@@ -168,6 +224,9 @@ backendGetDeviceID(
 
   DEBUG_printf(("backendGetDeviceID: device_id=\"%s\"\n", device_id));
 
+  if (uri)
+    *uri = '\0';
+
   if (!*device_id)
     return (-1);
 
diff -up cups-1.3.3/backend/Makefile.libieee1284 cups-1.3.3/backend/Makefile
--- cups-1.3.3/backend/Makefile.libieee1284	2007-08-08 20:27:51.000000000 +0100
+++ cups-1.3.3/backend/Makefile	2007-10-09 17:07:00.000000000 +0100
@@ -99,7 +99,7 @@ betest:	betest.o ../cups/$(LIBCUPS)
 test1284:	test1284.o ../cups/libcups.a
 	echo Linking $@...
 	$(CC) $(LDFLAGS) -o test1284 test1284.o ../cups/libcups.a \
-		$(SSLLIBS) $(COMMONLIBS) $(LIBZ)
+		$(SSLLIBS) $(COMMONLIBS) $(LIBZ) -ldl
 
 
 #
@@ -160,7 +160,7 @@ pap:	pap.o ../cups/$(LIBCUPS)
 
 parallel:	parallel.o ../cups/$(LIBCUPS) libbackend.a
 	echo Linking $@...
-	$(CC) $(LDFLAGS) -o parallel parallel.o libbackend.a $(LIBS)
+	$(CC) $(LDFLAGS) -o parallel parallel.o libbackend.a -ldl $(LIBS)
 
 
 #
@@ -189,7 +189,7 @@ serial:	serial.o ../cups/$(LIBCUPS) libb
 
 snmp:	snmp.o ../cups/$(LIBCUPS) libbackend.a
 	echo Linking $@...
-	$(CC) $(LDFLAGS) -o snmp snmp.o libbackend.a $(LIBS)
+	$(CC) $(LDFLAGS) -o snmp snmp.o libbackend.a $(LIBS) -ldl
 
 
 #
@@ -207,7 +207,7 @@ socket:	socket.o ../cups/$(LIBCUPS) libb
 
 usb:	usb.o ../cups/$(LIBCUPS) libbackend.a
 	echo Linking $@...
-	$(CC) $(LDFLAGS) -o usb usb.o libbackend.a $(BACKLIBS) $(LIBS)
+	$(CC) $(LDFLAGS) -o usb usb.o libbackend.a $(BACKLIBS) $(LIBS) -ldl
 usb.o:	usb.c usb-darwin.c usb-unix.c
 
 
diff -up cups-1.3.3/backend/parallel.c.libieee1284 cups-1.3.3/backend/parallel.c
--- cups-1.3.3/backend/parallel.c.libieee1284	2007-08-22 19:34:34.000000000 +0100
+++ cups-1.3.3/backend/parallel.c	2007-10-09 16:49:50.000000000 +0100
@@ -350,9 +350,12 @@ list_devices(void)
       * Now grab the IEEE 1284 device ID string...
       */
 
+      char device_uri[255 + 9];
+      strcpy (device_uri, "parallel:");
+      strcpy (device_uri + 9, device);
       if (!backendGetDeviceID(fd, device_id, sizeof(device_id),
                               make_model, sizeof(make_model),
-			      NULL, NULL, 0))
+			      "parallel", device_uri, sizeof (device_uri)))
 	printf("direct parallel:%s \"%s\" \"%s LPT #%d\" \"%s\"\n", device,
 	       make_model, make_model, i + 1, device_id);
       else