diff -Nur linux.old/drivers/sound/sb_card.c linux.new/drivers/sound/sb_card.c
--- linux.old/drivers/sound/sb_card.c	Fri Aug 16 08:40:52 2002
+++ linux.new/drivers/sound/sb_card.c	Fri Aug 16 08:42:47 2002
@@ -54,6 +54,14 @@
  * 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
+ * 	noise 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>
+ *
  * 01-10-2001 Added a new flavor of Creative SB AWE64 PnP (CTL00E9).
  *      Jerome Cornet <jcornet@free.fr>
  */
@@ -212,6 +220,7 @@
 static int multiple	= 0;
 static int pnplegacy	= 0;
 #endif
+static int no_hlt       = 0;
 
 MODULE_DESCRIPTION("Soundblaster driver");
 MODULE_LICENSE("GPL");
@@ -225,6 +234,7 @@
 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");
@@ -250,6 +260,7 @@
 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 noise on some hardware combinations");
 
 #if defined CONFIG_ISAPNP || defined CONFIG_ISAPNP_MODULE
 
@@ -982,6 +993,10 @@
 			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);
 
@@ -992,6 +1007,10 @@
 {
 	int i;
 	
+#ifdef HAVE_DISABLE_HLT
+	if (no_hlt) enable_hlt();
+#endif
+
 	if (smw_free) {
 		vfree(smw_free);
 		smw_free = NULL;
