diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index a4b72cd2eea0..0677d41239a9 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -367,6 +367,7 @@ int snd_ac97_update(ac97_t *ac97, unsigned short reg, unsigned short value)
 		ac97->regs[reg] = value;
 		ac97->bus->ops->write(ac97, reg, value);
 	}
+	set_bit(reg, ac97->reg_accessed);
 	up(&ac97->reg_mutex);
 	return change;
 }
@@ -410,6 +411,7 @@ int snd_ac97_update_bits_nolock(ac97_t *ac97, unsigned short reg,
 		ac97->regs[reg] = new;
 		ac97->bus->ops->write(ac97, reg, new);
 	}
+	set_bit(reg, ac97->reg_accessed);
 	return change;
 }
 
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index cc16f95f9cef..c3c3b68b4540 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -424,6 +424,7 @@ struct _snd_intel8x0 {
 	unsigned xbox: 1;		/* workaround for Xbox AC'97 detection */
 
 	int spdif_idx;	/* SPDIF BAR index; *_SPBAR or -1 if use PCMOUT */
+	unsigned int sdm_saved;	/* SDM reg value */
 
 	ac97_bus_t *ac97_bus;
 	ac97_t *ac97[3];
@@ -2373,6 +2374,8 @@ static int intel8x0_suspend(snd_card_t *card, pm_message_t state)
 	for (i = 0; i < 3; i++)
 		if (chip->ac97[i])
 			snd_ac97_suspend(chip->ac97[i]);
+	if (chip->device_type == DEVICE_INTEL_ICH4)
+		chip->sdm_saved = igetbyte(chip, ICHREG(SDM));
 	pci_disable_device(chip->pci);
 	return 0;
 }
@@ -2386,6 +2389,16 @@ static int intel8x0_resume(snd_card_t *card)
 	pci_set_master(chip->pci);
 	snd_intel8x0_chip_init(chip, 0);
 
+	/* re-initialize mixer stuff */
+	if (chip->device_type == DEVICE_INTEL_ICH4) {
+		/* enable separate SDINs for ICH4 */
+		iputbyte(chip, ICHREG(SDM), chip->sdm_saved);
+		/* use slot 10/11 for SPDIF */
+		iputdword(chip, ICHREG(GLOB_CNT),
+			  (igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_PCM_SPDIF_MASK) |
+			  ICH_PCM_SPDIF_1011);
+	}
+
 	/* refill nocache */
 	if (chip->fix_nocache)
 		fill_nocache(chip->bdbars.area, chip->bdbars.bytes, 1);