--- kdebase-3.5.8/kdm/backend/ctrl.c
+++ kdebase-3.5.8/kdm/backend/ctrl.c
@@ -483,6 +483,10 @@
 							Reply( "nuke\t" );
 					}
 				}
+				if (d->allowSuspend != SHUT_NONE) {
+				    Reply( "suspend\t" );
+				}
+
 				if ((d->displayType & d_location) == dLocal &&
 				    AnyReserveDisplays())
 					Writer( fd, cbuf, sprintf( cbuf, "reserve %d\t",
--- kdebase-3.5.8/kdm/backend/greet.h
+++ kdebase-3.5.8/kdm/backend/greet.h
@@ -125,6 +125,7 @@
 # define SHUT_REBOOT      1	/* how */
 # define SHUT_HALT        2
 # define SHUT_CONSOLE     -1 /* pseudo-code */
+# define SHUT_SUSPEND     -2 /* pseudo-code */
 # define SHUT_SCHEDULE    0	/* when; config only */
 # define SHUT_TRYNOW      1
 # define SHUT_FORCENOW    2
--- kdebase-3.5.8/kdm/config.def
+++ kdebase-3.5.8/kdm/config.def
@@ -1798,6 +1798,19 @@
  Who is allowed to shut down the system. This applies both to the
  greeter and to the command <acronym>FiFo</acronym>.
 
+Key: AllowSuspend
+Type: enum
+ None/SHUT_NONE: no <guilabel>Suspend...</guilabel> menu entry is shown at all
+ Root/SHUT_ROOT: the <systemitem class="username">root</systemitem> password must be entered to suspend
+ All/SHUT_ALL: everybody can suspend the machine
+Default: Root
+User: greeter
+User: core
+Instance: #:0/All
+Comment: &
+Description:
+  If the user should have an option to suspend the system if configured to (also in the desktop)
+
 Key: AllowSdForceNow
 Type: enum
  None: no forced shutdown is allowed at all
--- kdebase-3.5.8/kdm/kfrontend/kdmshutdown.cpp
+++ kdebase-3.5.8/kdm/kfrontend/kdmshutdown.cpp
@@ -22,6 +22,7 @@
 
 */
 
+#include <liblazy.h>
 #include "kdmshutdown.h"
 #include "kdm_greet.h"
 
@@ -34,6 +35,7 @@
 #include <kdialog.h>
 #include <kstandarddirs.h>
 #include <kuser.h>
+#include <kdebug.h>
 
 #include <qcombobox.h>
 #include <qvbuttongroup.h>
@@ -57,6 +59,10 @@
 int KDMShutdownBase::curPlugin = -1;
 PluginList KDMShutdownBase::pluginList;
 
+#define DBUS_HAL_INTERFACE		"org.freedesktop.Hal"
+#define DBUS_HAL_SYSTEM_POWER_INTERFACE	"org.freedesktop.Hal.Device.SystemPowerManagement"
+#define HAL_UDI_COMPUTER		"/org/freedesktop/Hal/devices/computer"
+
 KDMShutdownBase::KDMShutdownBase( int _uid, QWidget *_parent )
 	: inherited( _parent )
 	, box( new QVBoxLayout( this, KDmh, KDsh ) )
@@ -71,6 +77,7 @@
 	, verify( 0 )
 	, needRoot( -1 )
 	, uid( _uid )
+        , willSuspend( false )
 {
 }
 
@@ -87,6 +94,7 @@
 
 	if (uid &&
 	    ((willShut && _allowShutdown == SHUT_ROOT) ||
+             ( willSuspend && _allowSuspend == SHUT_ROOT ) ||
 	     (mayNuke && _allowNuke == SHUT_ROOT)))
 	{
 		rootlab = new QLabel( i18n("Root authorization required."), this );
@@ -169,6 +177,7 @@
 {
 	int nNeedRoot = uid &&
 		(((willShut && _allowShutdown == SHUT_ROOT) ||
+                  ( willSuspend && _allowSuspend == SHUT_ROOT ) ||
 		  (_allowNuke == SHUT_ROOT && doesNuke)));
 	if (verify && nNeedRoot != needRoot) {
 		if (needRoot == 1)
@@ -425,7 +434,7 @@
 
 
 KDMDelayedPushButton::KDMDelayedPushButton( const KGuiItem &item,
-                                            QWidget *parent, 
+                                            QWidget *parent,
                                             const char *name )
 	: inherited( item, parent, name )
 	, pop( 0 )
@@ -490,6 +499,57 @@
 	buttonlay->addWidget( btnReboot );
 	connect( btnReboot, SIGNAL(clicked()), SLOT(slotReboot()) );
 
+        if ( _allowSuspend != SHUT_NONE )
+        {
+            int supported = -1;
+            liblazy_hal_get_property_bool(HAL_UDI_COMPUTER, "power_management.can_suspend", &supported);
+            if (supported == 1)
+                suspend_ram = true;
+            else
+                suspend_ram = false;
+
+            liblazy_hal_get_property_bool(HAL_UDI_COMPUTER, "power_management.can_standby", &supported);
+            if (supported == 1)
+                standby = true;
+            else
+                standby = false;
+            liblazy_hal_get_property_bool(HAL_UDI_COMPUTER, "power_management.can_hibernate", &supported);
+            if (supported == 1)
+                suspend_disk = true;
+            else
+                suspend_disk = false;
+
+/*	if (liblazy_polkit_is_user_allowed_by_uid(0, "hal-power-hibernate", NULL) != 1)
+  suspend_disk = false;
+  if (liblazy_polkit_is_user_allowed_by_uid(0, "hal-power-suspend", NULL) != 1)
+  suspend_ram = false;
+  if (liblazy_polkit_is_user_allowed_by_uid(0, "hal-power-standby", NULL) != 1)
+  standby = false;
+*/
+            int sum = standby + suspend_ram + suspend_disk;
+            if ( sum ) {
+                buttonlay->addSpacing( KDialog::spacingHint() );
+
+                QButton *btnSuspend;
+                if (sum > 1) {
+                    btnSuspend = new KDMDelayedPushButton( KGuiItem( i18n("&Suspend Computer"), "player_pause"), this );
+                    QPopupMenu *suspends = new QPopupMenu(this);
+                    if (suspend_disk)
+                        suspends->insertItem(i18n("Suspend to Disk"), 1);
+                    if (suspend_ram)
+                        suspends->insertItem(i18n("Suspend to RAM"), 2);
+                    if (standby)
+                        suspends->insertItem(i18n("Standby"), 3);
+                    connect(suspends, SIGNAL(activated(int)), SLOT(slotSuspend(int)));
+                    static_cast<KDMDelayedPushButton*>(btnSuspend)->setPopup(suspends);
+                } else {
+                    btnSuspend = new KPushButton( KGuiItem( i18n("&Suspend Computer"), "player_pause"), this );
+                }
+                buttonlay->addWidget( btnSuspend );
+                connect(btnSuspend, SIGNAL(clicked()), SLOT(slotSuspend()));
+            }
+        }
+
 	GSet( 1 );
 	GSendInt( G_ListBootOpts );
 	if (GRecvInt() == BO_OK) {
@@ -536,6 +596,65 @@
 	freeStrArr( targetList );
 }
 
+void KDMSlimShutdown::slotSuspend()
+{
+  if (suspend_disk)
+      slotSuspend( 1 );
+  else if (suspend_ram)
+      slotSuspend( 2 );
+  else if ( standby )
+      slotSuspend( 3 );
+  else
+      reject();
+}
+
+void KDMSlimShutdown::slotSuspend(int id)
+{
+  reject();
+  // dpySpec *sess = fetchSessions( lstRemote | lstTTY );
+  // it would be nice to show the sessions to suspend, but it
+  // would require string changes (coolo)
+  dpySpec *sess = 0;
+  kdDebug() << "slotSuspend " << _allowSuspend << endl;
+  if (sess || _allowSuspend == SHUT_ROOT)
+  {
+      int ret = KDMConfShutdown( -1, sess, SHUT_SUSPEND, 0 ).exec();
+      if ( !ret )
+          return;
+  }
+
+  int error = 0;
+  int wake = 0;
+  DBusMessage *reply;
+
+  if (suspend_disk && id == 1) {
+       error = liblazy_dbus_system_send_method_call(DBUS_HAL_INTERFACE,
+						    HAL_UDI_COMPUTER,
+						    DBUS_HAL_SYSTEM_POWER_INTERFACE,
+						    "Hibernate",
+						    &reply,
+						    DBUS_TYPE_INVALID);
+  } else if (suspend_ram && id == 2)
+       error = liblazy_dbus_system_send_method_call(DBUS_HAL_INTERFACE,
+						    HAL_UDI_COMPUTER,
+						    DBUS_HAL_SYSTEM_POWER_INTERFACE,
+						    "Suspend",
+						    &reply,
+						    DBUS_TYPE_INT32,
+						    &wake,
+						    DBUS_TYPE_INVALID);
+  else if (standby && id == 3)
+       error = liblazy_dbus_system_send_method_call(DBUS_HAL_INTERFACE,
+						    HAL_UDI_COMPUTER,
+						    DBUS_HAL_SYSTEM_POWER_INTERFACE,
+						    "Standby",
+						    &reply,
+						  DBUS_TYPE_INVALID);
+  else {
+      return;
+  }
+}
+
 void
 KDMSlimShutdown::slotSched()
 {
@@ -601,16 +720,27 @@
 	if (type == SHUT_CONSOLE)
 		willShut = false;
 #endif
+        QString title;
+        if ( type == SHUT_HALT)
+            title = i18n("Turn Off Computer");
+        else {
+#ifdef HAVE_VTS
+            if ( type == SHUT_CONSOLE)
+                title = i18n("Switch to Console");
+            else
+#endif
+                if ( type == SHUT_SUSPEND ) {
+                    willSuspend = true;
+                    title = i18n( "Suspend Computer" );
+                }
+                else
+                    title = i18n("Restart Computer");
+        }
+
 	box->addWidget( new QLabel( QString( "<qt><center><b><nobr>"
 	                                     "%1%2"
 	                                     "</nobr></b></center><br></qt>" )
-	                            .arg( (type == SHUT_HALT) ?
-	                                  i18n("Turn Off Computer") :
-#ifdef HAVE_VTS
-	                                  (type == SHUT_CONSOLE) ?
-	                                  i18n("Switch to Console") :
-#endif
-	                                  i18n("Restart Computer") )
+	                            .arg( title )
 	                            .arg( os ?
 	                                  i18n("<br>(Next boot: %1)")
 	                                  .arg( QString::fromLocal8Bit( os ) ) :
--- kdebase-3.5.8/kdm/kfrontend/kdmshutdown.h
+++ kdebase-3.5.8/kdm/kfrontend/kdmshutdown.h
@@ -67,7 +67,7 @@
 #else
 	static const bool willShut = true;
 #endif
-	bool mayNuke, doesNuke, mayOk, maySched;
+	bool mayNuke, doesNuke, mayOk, maySched, willSuspend;
 
   private slots:
 	void slotSched();
@@ -118,7 +118,6 @@
 	QComboBox *targets;
 	int oldTarget;
 	int sch_st, sch_to;
-
 };
 
 class KDMRadioButton : public QRadioButton {
@@ -168,10 +167,13 @@
 	void slotReboot();
 	void slotReboot( int );
 	void slotSched();
+        void slotSuspend();
+        void slotSuspend(int);
 
   private:
 	bool checkShutdown( int type, const char *os );
 	char **targetList;
+        bool suspend_disk, suspend_ram, standby;
 
 };
 
--- kdebase-3.5.8/kdm/kfrontend/Makefile.am
+++ kdebase-3.5.8/kdm/kfrontend/Makefile.am
@@ -4,7 +4,7 @@
 SUBDIRS = themer themes pics sessions
 
 AM_CPPFLAGS = -I$(srcdir)/../backend -I.. -I$(top_srcdir)/kcontrol/background \
-    -I$(top_srcdir)/kdmlib $(all_includes)
+    -I$(top_srcdir)/kdmlib $(all_includes) $(DBUS_INCS)
 
 bin_PROGRAMS = kdm_config kdm_greet krootimage genkdmconf kdmctl
 
@@ -25,7 +25,7 @@
     kgreeter.cpp \
     kgapp.cpp
 kdm_greet_LDFLAGS = $(all_libraries) $(KDE_RPATH)
-kdm_greet_LDADD = themer/libkdmthemer.a $(LIB_KDEUI) $(XTESTLIB) $(LIBPOSIX4)
+kdm_greet_LDADD = themer/libkdmthemer.a $(LIB_KDEUI) $(XTESTLIB) $(LIBPOSIX4) -llazy $(DBUS_LIBS)
 
 krootimage_SOURCES = krootimage.cpp
 krootimage_LDFLAGS = $(all_libraries) $(KDE_RPATH)