diff -uNr linux-2.5.69/arch/i386/kernel/apic.c linux-2.5.69.apic_shutdown/arch/i386/kernel/apic.c
--- linux-2.5.69/arch/i386/kernel/apic.c	Sun May 11 09:08:57 2003
+++ linux-2.5.69.apic_shutdown/arch/i386/kernel/apic.c	Sun May 11 17:22:19 2003
@@ -171,6 +171,36 @@
 		outb(0x70, 0x22);
 		outb(0x00, 0x23);
 	}
+	else {
+		/* Go back to Virtual Wire compatibility mode */
+		unsigned long value;
+
+		/* For the spurious interrupt use vector F, and enable it */
+		value = apic_read(APIC_SPIV);
+		value &= ~APIC_VECTOR_MASK; 
+		value |= APIC_SPIV_APIC_ENABLED;
+		value |= 0xf;
+		apic_write_around(APIC_SPIV, value);
+
+		/* For LVT0 make it edge triggered, active high, external and enabled */
+		value = apic_read(APIC_LVT0);
+		value &= ~(APIC_MODE_MASK | APIC_SEND_PENDING | 
+			APIC_INPUT_POLARITY | APIC_LVT_REMOTE_IRR | 
+			APIC_LVT_LEVEL_TRIGGER | APIC_LVT_MASKED );
+		value |= APIC_LVT_REMOTE_IRR | APIC_SEND_PENDING;
+		value = SET_APIC_DELIVERY_MODE(value, APIC_MODE_EXINT);
+		apic_write_around(APIC_LVT0, value);
+		
+		/* For LVT1 make it edge triggered, active high, nmi and enabled */
+		value = apic_read(APIC_LVT1);
+		value &= ~(
+			APIC_MODE_MASK | APIC_SEND_PENDING | 
+			APIC_INPUT_POLARITY | APIC_LVT_REMOTE_IRR | 
+			APIC_LVT_LEVEL_TRIGGER | APIC_LVT_MASKED);
+		value |= APIC_LVT_REMOTE_IRR | APIC_SEND_PENDING;
+		value = SET_APIC_DELIVERY_MODE(value, APIC_MODE_NMI);
+		apic_write_around(APIC_LVT1, value);
+	}
 }
 
 void disable_local_APIC(void)
diff -uNr linux-2.5.69/include/asm-i386/apicdef.h linux-2.5.69.apic_shutdown/include/asm-i386/apicdef.h
--- linux-2.5.69/include/asm-i386/apicdef.h	Mon Feb 17 18:57:47 2003
+++ linux-2.5.69.apic_shutdown/include/asm-i386/apicdef.h	Sun May 11 17:21:56 2003
@@ -93,6 +93,7 @@
 #define			APIC_LVT_REMOTE_IRR		(1<<14)
 #define			APIC_INPUT_POLARITY		(1<<13)
 #define			APIC_SEND_PENDING		(1<<12)
+#define			APIC_MODE_MASK			0x700
 #define			GET_APIC_DELIVERY_MODE(x)	(((x)>>8)&0x7)
 #define			SET_APIC_DELIVERY_MODE(x,y)	(((x)&~0x700)|((y)<<8))
 #define				APIC_MODE_FIXED		0x0