diff -Nur linux-2.4.4-old/drivers/sound/sb_card.c linux-2.4.4-new/drivers/sound/sb_card.c
--- linux-2.4.4-old/drivers/sound/sb_card.c	Mon Aug  6 10:20:37 2001
+++ linux-2.4.4-new/drivers/sound/sb_card.c	Mon Aug  6 10:30:09 2001
@@ -53,6 +53,14 @@
  *
  * 28-10-2000 Added pnplegacy support
  * 	Daniel Church <dchurch@mbhs.edu>
+ *
+ * 06-08-2001 Added no_hlt option
+ *	On some hardware combinations halting the CPU generates
+ *	noice on the sound output. Until now the solution has
+ *	been to give the kernel a no-hlt argument. This option
+ *	allows turning off halting only while the sb module is
+ *	loaded.
+ *	Kasper Dupont <kasperd@daimi.au.dk>
  */
 
 #include <linux/config.h>
@@ -209,6 +217,7 @@
 static int multiple	= 0;
 static int pnplegacy	= 0;
 #endif
+static int no_hlt       = 0;
 
 MODULE_DESCRIPTION("Soundblaster driver");
 
@@ -221,6 +230,7 @@
 MODULE_PARM(sm_games,	"i");
 MODULE_PARM(esstype,	"i");
 MODULE_PARM(acer,	"i");
+MODULE_PARM(no_hlt,	"i");
 
 #if defined CONFIG_ISAPNP || defined CONFIG_ISAPNP_MODULE
 MODULE_PARM(isapnp,	"i");
@@ -246,6 +256,7 @@
 MODULE_PARM_DESC(sm_games,	"Enable support for Logitech soundman games");
 MODULE_PARM_DESC(esstype,	"ESS chip type");
 MODULE_PARM_DESC(acer,		"Set this to detect cards in some ACER notebooks");
+MODULE_PARM_DESC(no_hlt,	"Used to avoid noice on some hardware combinations");
 
 #if defined CONFIG_ISAPNP || defined CONFIG_ISAPNP_MODULE
 
@@ -912,6 +923,10 @@
 			sbmpu[card] = 1;
 	}
 
+#ifdef HAVE_DISABLE_HLT
+	if (no_hlt) disable_hlt();
+#endif
+
 	if(isapnp)
 		printk(KERN_NOTICE "sb: %d Soundblaster PnP card(s) found.\n", sb_cards_num);
 
@@ -922,6 +937,10 @@
 {
 	int i;
 	
+#ifdef HAVE_DISABLE_HLT
+	if (no_hlt) enable_hlt();
+#endif
+
 	if (smw_free) {
 		vfree(smw_free);
 		smw_free = NULL;
