Improved detection of available options for

freeze/standby/suspend/hybrid suspend/hibernate when
multiple power managers are available.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

2 files changed, 257 insertions, 253 deletions

diff --git a/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c b/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c
index 2a10d67c6..1975a2d29 100644
--- a/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c
+++ b/tdecore/tdehw/hwlibdaemons/dbus/tde_dbus_hardwarecontrol.c
@@ -399,7 +399,6 @@ void reply_SetSuspend(DBusMessage* msg, DBusConnection* conn, bool result) {
 }
 
 void reply_CanSetHibernationMethod(DBusMessage* msg, DBusConnection* conn) {
-
 	// check if path is writable
 	reply_CanSetGivenPath(msg, conn, "/sys/power/disk");
 }
diff --git a/tdecore/tdehw/tderootsystemdevice.cpp b/tdecore/tdehw/tderootsystemdevice.cpp
index c11f346f4..0b25d8cbf 100644
--- a/tdecore/tdehw/tderootsystemdevice.cpp
+++ b/tdecore/tdehw/tderootsystemdevice.cpp
@@ -89,12 +89,6 @@ void TDERootSystemDevice::internalSetDiskSpaceNeededForHibernation(unsigned long
 }
 
 bool TDERootSystemDevice::canSetHibernationMethod() {
-	TQString hibernationnode = "/sys/power/disk";
-	int rval = access (hibernationnode.ascii(), W_OK);
-	if (rval == 0) {
-		return TRUE;
-	}
-
 #ifdef WITH_TDEHWLIB_DAEMONS
 	{
 		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
@@ -113,18 +107,16 @@ bool TDERootSystemDevice::canSetHibernationMethod() {
 	}
 #endif // WITH_TDEHWLIB_DAEMONS
 
-	return FALSE;
-}
-
-bool TDERootSystemDevice::canFreeze() {
-	TQString statenode = "/sys/power/state";
-	int rval = access (statenode.ascii(), W_OK);
+	TQString hibernationnode = "/sys/power/disk";
+	int rval = access(hibernationnode.ascii(), W_OK);
 	if (rval == 0) {
-		if (powerStates().contains(TDESystemPowerState::Freeze)) {
-			return TRUE;
-		}
+		return true;
 	}
 
+	return false;
+}
+
+bool TDERootSystemDevice::canFreeze() {
 #ifdef WITH_TDEHWLIB_DAEMONS
 	{
 		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
@@ -143,18 +135,18 @@ bool TDERootSystemDevice::canFreeze() {
 	}
 #endif // WITH_TDEHWLIB_DAEMONS
 
-	return FALSE;
-}
-
-bool TDERootSystemDevice::canStandby() {
 	TQString statenode = "/sys/power/state";
-	int rval = access (statenode.ascii(), W_OK);
+	int rval = access(statenode.ascii(), W_OK);
 	if (rval == 0) {
-		if (powerStates().contains(TDESystemPowerState::Standby)) {
-			return TRUE;
+		if (powerStates().contains(TDESystemPowerState::Freeze)) {
+			return true;
 		}
 	}
 
+	return false;
+}
+
+bool TDERootSystemDevice::canStandby() {
 #ifdef WITH_TDEHWLIB_DAEMONS
 	{
 		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
@@ -173,36 +165,18 @@ bool TDERootSystemDevice::canStandby() {
 	}
 #endif // WITH_TDEHWLIB_DAEMONS
 
-	return FALSE;
-}
-
-bool TDERootSystemDevice::canSuspend() {
 	TQString statenode = "/sys/power/state";
-	int rval = access (statenode.ascii(), W_OK);
+	int rval = access(statenode.ascii(), W_OK);
 	if (rval == 0) {
-		if (powerStates().contains(TDESystemPowerState::Suspend)) {
-			return TRUE;
+		if (powerStates().contains(TDESystemPowerState::Standby)) {
+			return true;
 		}
 	}
 
-#ifdef WITH_TDEHWLIB_DAEMONS
-	{
-		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
-		if (dbusConn.isConnected()) {
-			// can suspend?
-			TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
-						"org.trinitydesktop.hardwarecontrol",
-						"/org/trinitydesktop/hardwarecontrol",
-						"org.trinitydesktop.hardwarecontrol.Power",
-						"CanSuspend");
-			TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
-			if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
-				return reply[0].toBool();
-			}
-		}
-	}
-#endif // WITH_TDEHWLIB_DAEMONS
+	return false;
+}
 
+bool TDERootSystemDevice::canSuspend() {
 #ifdef WITH_LOGINDPOWER
 	{
 		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
@@ -283,30 +257,16 @@ bool TDERootSystemDevice::canSuspend() {
 	}
 #endif // WITH_HAL
 
-	return FALSE;
-}
-
-bool TDERootSystemDevice::canHybridSuspend() {
-	TQString statenode = "/sys/power/state";
-	TQString disknode  = "/sys/power/disk";
-	int state_rval = access (statenode.ascii(), W_OK);
-	int disk_rval  = access (disknode.ascii(), W_OK);
-	if (state_rval == 0 && disk_rval == 0) {
-		if (powerStates().contains(TDESystemPowerState::HybridSuspend)) {
-			return TRUE;
-		}
-	}
-
 #ifdef WITH_TDEHWLIB_DAEMONS
 	{
 		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
 		if (dbusConn.isConnected()) {
-			// can hybrid suspend?
+			// can suspend?
 			TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
 						"org.trinitydesktop.hardwarecontrol",
 						"/org/trinitydesktop/hardwarecontrol",
 						"org.trinitydesktop.hardwarecontrol.Power",
-						"CanHybridSuspend");
+						"CanSuspend");
 			TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
 			if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
 				return reply[0].toBool();
@@ -315,6 +275,18 @@ bool TDERootSystemDevice::canHybridSuspend() {
 	}
 #endif // WITH_TDEHWLIB_DAEMONS
 
+	TQString statenode = "/sys/power/state";
+	int rval = access(statenode.ascii(), W_OK);
+	if (rval == 0) {
+		if (powerStates().contains(TDESystemPowerState::Suspend)) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
+bool TDERootSystemDevice::canHybridSuspend() {
 #ifdef WITH_LOGINDPOWER
 	{
 		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
@@ -356,30 +328,16 @@ bool TDERootSystemDevice::canHybridSuspend() {
 	}
 #endif // WITH_HAL
 
-	return FALSE;
-}
-
-bool TDERootSystemDevice::canHibernate() {
-	TQString statenode = "/sys/power/state";
-	TQString disknode  = "/sys/power/disk";
-	int state_rval = access (statenode.ascii(), W_OK);
-	int disk_rval  = access (disknode.ascii(), W_OK);
-	if (state_rval == 0 && disk_rval == 0) {
-		if (powerStates().contains(TDESystemPowerState::Hibernate)) {
-			return TRUE;
-		}
-	}
-
 #ifdef WITH_TDEHWLIB_DAEMONS
 	{
 		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
 		if (dbusConn.isConnected()) {
-			// can hibernate?
+			// can hybrid suspend?
 			TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
 						"org.trinitydesktop.hardwarecontrol",
 						"/org/trinitydesktop/hardwarecontrol",
 						"org.trinitydesktop.hardwarecontrol.Power",
-						"CanHibernate");
+						"CanHybridSuspend");
 			TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
 			if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
 				return reply[0].toBool();
@@ -388,6 +346,20 @@ bool TDERootSystemDevice::canHibernate() {
 	}
 #endif // WITH_TDEHWLIB_DAEMONS
 
+	TQString statenode = "/sys/power/state";
+	TQString disknode  = "/sys/power/disk";
+	int state_rval = access(statenode.ascii(), W_OK);
+	int disk_rval  = access(disknode.ascii(), W_OK);
+	if (state_rval == 0 && disk_rval == 0) {
+		if (powerStates().contains(TDESystemPowerState::HybridSuspend)) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
+bool TDERootSystemDevice::canHibernate() {
 #ifdef WITH_LOGINDPOWER
 	{
 		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
@@ -468,14 +440,42 @@ bool TDERootSystemDevice::canHibernate() {
 	}
 #endif // WITH_HAL
 
-	return FALSE;
+#ifdef WITH_TDEHWLIB_DAEMONS
+	{
+		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
+		if (dbusConn.isConnected()) {
+			// can hibernate?
+			TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+						"org.trinitydesktop.hardwarecontrol",
+						"/org/trinitydesktop/hardwarecontrol",
+						"org.trinitydesktop.hardwarecontrol.Power",
+						"CanHibernate");
+			TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+			if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
+				return reply[0].toBool();
+			}
+		}
+	}
+#endif // WITH_TDEHWLIB_DAEMONS
+
+	TQString statenode = "/sys/power/state";
+	TQString disknode  = "/sys/power/disk";
+	int state_rval = access(statenode.ascii(), W_OK);
+	int disk_rval  = access(disknode.ascii(), W_OK);
+	if (state_rval == 0 && disk_rval == 0) {
+		if (powerStates().contains(TDESystemPowerState::Hibernate)) {
+			return true;
+		}
+	}
+
+	return false;
 }
 
 bool TDERootSystemDevice::canPowerOff() {
 	TDEConfig config("ksmserverrc", true);
 	config.setGroup("General" );
 	if (!config.readBoolEntry( "offerShutdown", true )) {
-		return FALSE;
+		return false;
 	}
 
 #ifdef WITH_LOGINDPOWER
@@ -518,16 +518,17 @@ bool TDERootSystemDevice::canPowerOff() {
 	// Can we power down this system?
 	// This should probably be checked via DCOP and therefore interface with TDM
 	// if ( DM().canShutdown() ) {
-	// 	return TRUE;
+	// 	return true;
 	// }
-	return TRUE;
+	   return true;
+	//return false;
 }
 
 bool TDERootSystemDevice::canReboot() {
 	TDEConfig config("ksmserverrc", true);
 	config.setGroup("General" );
 	if (!config.readBoolEntry( "offerShutdown", true )) {
-		return FALSE;
+		return false;
 	}
 
 #ifdef WITH_LOGINDPOWER
@@ -570,40 +571,13 @@ bool TDERootSystemDevice::canReboot() {
 	// Can we power down this system?
 	// This should probably be checked via DCOP and therefore interface with TDM
 	// if ( DM().canShutdown() ) {
-	// 	return TRUE;
+	// 	return true;
 	// }
-	return TRUE;
+	   return true;
+	//return false;
 }
 
 void TDERootSystemDevice::setHibernationMethod(TDESystemHibernationMethod::TDESystemHibernationMethod hm) {
-	TQString hibernationnode = "/sys/power/disk";
-	TQFile file( hibernationnode );
-	if ( file.open( IO_WriteOnly ) ) {
-		TQString hibernationCommand;
-		if (hm == TDESystemHibernationMethod::Platform) {
-			hibernationCommand = "platform";
-		}
-		else if (hm == TDESystemHibernationMethod::Shutdown) {
-			hibernationCommand = "shutdown";
-		}
-		else if (hm == TDESystemHibernationMethod::Reboot) {
-			hibernationCommand = "reboot";
-		}
-		else if (hm == TDESystemHibernationMethod::TestProc) {
-			hibernationCommand = "testproc";
-		}
-		else if (hm == TDESystemHibernationMethod::Test) {
-			hibernationCommand = "test";
-		}
-		else if (hm == TDESystemHibernationMethod::Suspend) {
-			hibernationCommand = "suspend";
-		}
-		TQTextStream stream( &file );
-		stream << hibernationCommand;
-		file.close();
-		return;
-	}
-
 #ifdef WITH_TDEHWLIB_DAEMONS
 	{
 		TQT_DBusConnection dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
@@ -641,6 +615,33 @@ void TDERootSystemDevice::setHibernationMethod(TDESystemHibernationMethod::TDESy
 	}
 #endif // WITH_TDEHWLIB_DAEMONS
 
+	TQString hibernationnode = "/sys/power/disk";
+	TQFile file( hibernationnode );
+	if ( file.open( IO_WriteOnly ) ) {
+		TQString hibernationCommand;
+		if (hm == TDESystemHibernationMethod::Platform) {
+			hibernationCommand = "platform";
+		}
+		else if (hm == TDESystemHibernationMethod::Shutdown) {
+			hibernationCommand = "shutdown";
+		}
+		else if (hm == TDESystemHibernationMethod::Reboot) {
+			hibernationCommand = "reboot";
+		}
+		else if (hm == TDESystemHibernationMethod::TestProc) {
+			hibernationCommand = "testproc";
+		}
+		else if (hm == TDESystemHibernationMethod::Test) {
+			hibernationCommand = "test";
+		}
+		else if (hm == TDESystemHibernationMethod::Suspend) {
+			hibernationCommand = "suspend";
+		}
+		TQTextStream stream( &file );
+		stream << hibernationCommand;
+		file.close();
+		return;
+	}
 }
 
 bool check_CanSetSuspend(char* state, char* disk, char* mem) {
@@ -720,145 +721,6 @@ bool TDERootSystemDevice::setPowerState(TDESystemPowerState::TDESystemPowerState
 	if ((ps == TDESystemPowerState::Freeze)  || (ps == TDESystemPowerState::Standby)   ||  
 	    (ps == TDESystemPowerState::Suspend) || (ps == TDESystemPowerState::Hibernate) ||
 	    (ps == TDESystemPowerState::HybridSuspend)) {
-		TQString statenode = "/sys/power/state";
-		TQString disknode  = "/sys/power/disk";
-		TQString memnode   = "/sys/power/mem_sleep";
-		TQFile statefile( statenode );
-		TQFile diskfile( disknode );
-		TQFile memfile( memnode );
-		TQString stateCommand = TQString::null;
-		TQString diskCommand = TQString::null;
-		TQString memCommand = TQString::null;
-		bool stateWriteOk = false;
-		bool diskWriteOk = false;
-		bool memWriteOk = false;
-		if (ps == TDESystemPowerState::Freeze) {
-			if (check_CanSetSuspend("freeze", NULL, NULL)) {
-				stateCommand = "freeze";
-			}
-			else {
-				stateCommand = "mem";
-				diskCommand = "s2idle";
-			}
-		}
-		else if (ps == TDESystemPowerState::Standby) {
-			if (check_CanSetSuspend("standby", NULL, NULL)) {
-				stateCommand = "standby";
-			}
-			else {
-				stateCommand = "mem";
-				diskCommand = "shallow";
-			}
-		}
-		else if (ps == TDESystemPowerState::Suspend) {
-			stateCommand = "mem";
-			if (check_CanSetSuspend("mem", NULL, "deep")) {
-				diskCommand = "deep";
-			}
-		}
-		else if (ps == TDESystemPowerState::HybridSuspend) {
-			stateCommand = "disk";
-			diskCommand = "suspend";
-		}
-		else if (ps == TDESystemPowerState::Hibernate) {
-			stateCommand = "disk";
-			if (check_CanSetSuspend("disk", "shutdown", NULL)) {
-				diskCommand = "shutdown";
-			}
-			else {
-				diskCommand = "platform";
-			}
-		}
-
-		memWriteOk = (memCommand == TQString::null);
-		if (memCommand != TQString::null && memfile.open( IO_WriteOnly )) {
-			memWriteOk = true;
-			TQTextStream memstream( &memfile );
-			memstream << memCommand;
-			memfile.close();
-		}
-		if (memWriteOk) {
-			diskWriteOk = (diskCommand == TQString::null);
-			if (diskCommand != TQString::null && diskfile.open( IO_WriteOnly )) {
-				diskWriteOk = true;
-				TQTextStream diskstream( &diskfile );
-				diskstream << diskCommand;
-				diskfile.close();
-			}
-			if (diskWriteOk) {
-				if (stateCommand != TQString::null && statefile.open( IO_WriteOnly )) {
-					TQTextStream statestream( &statefile );
-					statestream << stateCommand;
-					statefile.close();
-					return true;
-				}
-			}
-		}
-
-#ifdef WITH_TDEHWLIB_DAEMONS
-		{
-			TQT_DBusConnection dbusConn;
-			dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
-			if ( dbusConn.isConnected() ) {
-				if (ps == TDESystemPowerState::Freeze) {
-					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
-								"org.trinitydesktop.hardwarecontrol",
-								"/org/trinitydesktop/hardwarecontrol",
-								"org.trinitydesktop.hardwarecontrol.Power",
-								"Freeze");
-					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
-					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
-						return true;
-					}
-				}
-				else if (ps == TDESystemPowerState::Standby) {
-					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
-								"org.trinitydesktop.hardwarecontrol",
-								"/org/trinitydesktop/hardwarecontrol",
-								"org.trinitydesktop.hardwarecontrol.Power",
-								"Standby");
-					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
-					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
-						return true;
-					}
-				}
-				else if (ps == TDESystemPowerState::Suspend) {
-					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
-								"org.trinitydesktop.hardwarecontrol",
-								"/org/trinitydesktop/hardwarecontrol",
-								"org.trinitydesktop.hardwarecontrol.Power",
-								"Suspend");
-					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
-					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
-						return true;
-					}
-				}
-				else if (ps == TDESystemPowerState::HybridSuspend) {
-					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
-								"org.trinitydesktop.hardwarecontrol",
-								"/org/trinitydesktop/hardwarecontrol",
-								"org.trinitydesktop.hardwarecontrol.Power",
-								"HybridSuspend");
-					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
-					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
-						return true;
-					}
-				}
-				else if (ps == TDESystemPowerState::Hibernate) {
-					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
-								"org.trinitydesktop.hardwarecontrol",
-								"/org/trinitydesktop/hardwarecontrol",
-								"org.trinitydesktop.hardwarecontrol.Power",
-								"Hibernate");
-					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
-					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
-						return true;
-					}
-				}
-			}
-		}
-#endif // WITH_TDEHWLIB_DAEMONS
-
 #ifdef WITH_LOGINDPOWER
 		{
 		  // No support for "freeze" in org.freedesktop.login1
@@ -1013,6 +875,145 @@ bool TDERootSystemDevice::setPowerState(TDESystemPowerState::TDESystemPowerState
 		}
 #endif // WITH_HAL
 
+#ifdef WITH_TDEHWLIB_DAEMONS
+		{
+			TQT_DBusConnection dbusConn;
+			dbusConn = TQT_DBusConnection::addConnection(TQT_DBusConnection::SystemBus);
+			if ( dbusConn.isConnected() ) {
+				if (ps == TDESystemPowerState::Freeze) {
+					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+								"org.trinitydesktop.hardwarecontrol",
+								"/org/trinitydesktop/hardwarecontrol",
+								"org.trinitydesktop.hardwarecontrol.Power",
+								"Freeze");
+					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
+						return true;
+					}
+				}
+				else if (ps == TDESystemPowerState::Standby) {
+					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+								"org.trinitydesktop.hardwarecontrol",
+								"/org/trinitydesktop/hardwarecontrol",
+								"org.trinitydesktop.hardwarecontrol.Power",
+								"Standby");
+					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
+						return true;
+					}
+				}
+				else if (ps == TDESystemPowerState::Suspend) {
+					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+								"org.trinitydesktop.hardwarecontrol",
+								"/org/trinitydesktop/hardwarecontrol",
+								"org.trinitydesktop.hardwarecontrol.Power",
+								"Suspend");
+					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
+						return true;
+					}
+				}
+				else if (ps == TDESystemPowerState::HybridSuspend) {
+					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+								"org.trinitydesktop.hardwarecontrol",
+								"/org/trinitydesktop/hardwarecontrol",
+								"org.trinitydesktop.hardwarecontrol.Power",
+								"HybridSuspend");
+					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
+						return true;
+					}
+				}
+				else if (ps == TDESystemPowerState::Hibernate) {
+					TQT_DBusMessage msg = TQT_DBusMessage::methodCall(
+								"org.trinitydesktop.hardwarecontrol",
+								"/org/trinitydesktop/hardwarecontrol",
+								"org.trinitydesktop.hardwarecontrol.Power",
+								"Hibernate");
+					TQT_DBusMessage reply = dbusConn.sendWithReply(msg);
+					if (reply.type() == TQT_DBusMessage::ReplyMessage) {
+						return true;
+					}
+				}
+			}
+		}
+#endif // WITH_TDEHWLIB_DAEMONS
+
+		TQString statenode = "/sys/power/state";
+		TQString disknode  = "/sys/power/disk";
+		TQString memnode   = "/sys/power/mem_sleep";
+		TQFile statefile( statenode );
+		TQFile diskfile( disknode );
+		TQFile memfile( memnode );
+		TQString stateCommand = TQString::null;
+		TQString diskCommand = TQString::null;
+		TQString memCommand = TQString::null;
+		bool stateWriteOk = false;
+		bool diskWriteOk = false;
+		bool memWriteOk = false;
+		if (ps == TDESystemPowerState::Freeze) {
+			if (check_CanSetSuspend("freeze", NULL, NULL)) {
+				stateCommand = "freeze";
+			}
+			else {
+				stateCommand = "mem";
+				diskCommand = "s2idle";
+			}
+		}
+		else if (ps == TDESystemPowerState::Standby) {
+			if (check_CanSetSuspend("standby", NULL, NULL)) {
+				stateCommand = "standby";
+			}
+			else {
+				stateCommand = "mem";
+				diskCommand = "shallow";
+			}
+		}
+		else if (ps == TDESystemPowerState::Suspend) {
+			stateCommand = "mem";
+			if (check_CanSetSuspend("mem", NULL, "deep")) {
+				diskCommand = "deep";
+			}
+		}
+		else if (ps == TDESystemPowerState::HybridSuspend) {
+			stateCommand = "disk";
+			diskCommand = "suspend";
+		}
+		else if (ps == TDESystemPowerState::Hibernate) {
+			stateCommand = "disk";
+			if (check_CanSetSuspend("disk", "shutdown", NULL)) {
+				diskCommand = "shutdown";
+			}
+			else {
+				diskCommand = "platform";
+			}
+		}
+
+		memWriteOk = (memCommand == TQString::null);
+		if (memCommand != TQString::null && memfile.open( IO_WriteOnly )) {
+			memWriteOk = true;
+			TQTextStream memstream( &memfile );
+			memstream << memCommand;
+			memfile.close();
+		}
+		if (memWriteOk) {
+			diskWriteOk = (diskCommand == TQString::null);
+			if (diskCommand != TQString::null && diskfile.open( IO_WriteOnly )) {
+				diskWriteOk = true;
+				TQTextStream diskstream( &diskfile );
+				diskstream << diskCommand;
+				diskfile.close();
+			}
+			if (diskWriteOk) {
+				if (stateCommand != TQString::null && statefile.open( IO_WriteOnly )) {
+					TQTextStream statestream( &statefile );
+					statestream << stateCommand;
+					statefile.close();
+					return true;
+				}
+			}
+		}
+
 		return false;
 	}
 	else if (ps == TDESystemPowerState::PowerOff) {
@@ -1038,6 +1039,7 @@ bool TDERootSystemDevice::setPowerState(TDESystemPowerState::TDESystemPowerState
 			}
 		}
 #endif // WITH_LOGINDPOWER
+
 #ifdef WITH_CONSOLEKIT
 		{
 			TQT_DBusConnection dbusConn;
@@ -1055,6 +1057,7 @@ bool TDERootSystemDevice::setPowerState(TDESystemPowerState::TDESystemPowerState
 			}
 		}
 #endif // WITH_CONSOLEKIT
+
 		// Power down the system using a DCOP command
 		/* As found at http://lists.kde.org/?l=kde-linux&m=115770988603387
 		Logout parameters explanation:
@@ -1105,6 +1108,7 @@ bool TDERootSystemDevice::setPowerState(TDESystemPowerState::TDESystemPowerState
 			}
 		}
 #endif // WITH_LOGINDPOWER
+
 #ifdef WITH_CONSOLEKIT
 		{
 			TQT_DBusConnection dbusConn;
@@ -1122,6 +1126,7 @@ bool TDERootSystemDevice::setPowerState(TDESystemPowerState::TDESystemPowerState
 			}
 		}
 #endif // WITH_CONSOLEKIT
+
 		// Power down the system using a DCOP command
 		// See above PowerOff section for logout() parameters explanation
 		TQByteArray data;