Index: head/share/man/man4/snd_hda.4
===================================================================
--- head/share/man/man4/snd_hda.4
+++ head/share/man/man4/snd_hda.4
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd April 1, 2018
+.Dd July 16, 2019
 .Dt SND_HDA 4
 .Os
 .Sh NAME
@@ -153,6 +153,12 @@
 and
 .Dq Li ovref Ns Ar X
 options control the voltage used to power external microphones.
+.It Va dev.hdaa.%d.init_clear
+Zero out the pin widget config setup by the system.
+Some systems seem to have unuseable audio devices if the pin widgit
+configuration is cleared.
+Set this value to 0 to accept the default configuration values setup by the
+BIOS.
 .It Va hint.hdaa.%d.gpio_config
 Overrides audio function GPIO pins configuration set by BIOS.
 May be specified as a set of space-separated
Index: head/sys/dev/sound/pci/hda/hdaa.h
===================================================================
--- head/sys/dev/sound/pci/hda/hdaa.h
+++ head/sys/dev/sound/pci/hda/hdaa.h
@@ -214,6 +214,7 @@
 	struct hdaa_chan	*chans;
 	struct callout		poll_jack;
 	int			poll_ival;
+	uint32_t		init_clear;
 };
 
 #define HDAA_CHN_RUNNING	0x00000001
Index: head/sys/dev/sound/pci/hda/hdaa.c
===================================================================
--- head/sys/dev/sound/pci/hda/hdaa.c
+++ head/sys/dev/sound/pci/hda/hdaa.c
@@ -5034,11 +5034,13 @@
 		pincap = w->wclass.pin.cap;
 
 		/* Disable everything. */
-		w->wclass.pin.ctrl &= ~(
-		    HDA_CMD_SET_PIN_WIDGET_CTRL_HPHN_ENABLE |
-		    HDA_CMD_SET_PIN_WIDGET_CTRL_OUT_ENABLE |
-		    HDA_CMD_SET_PIN_WIDGET_CTRL_IN_ENABLE |
-		    HDA_CMD_SET_PIN_WIDGET_CTRL_VREF_ENABLE_MASK);
+		if (devinfo->init_clear) {
+			w->wclass.pin.ctrl &= ~(
+		    	HDA_CMD_SET_PIN_WIDGET_CTRL_HPHN_ENABLE |
+		    	HDA_CMD_SET_PIN_WIDGET_CTRL_OUT_ENABLE |
+		    	HDA_CMD_SET_PIN_WIDGET_CTRL_IN_ENABLE |
+		    	HDA_CMD_SET_PIN_WIDGET_CTRL_VREF_ENABLE_MASK);
+		}
 
 		if (w->enable == 0) {
 			/* Pin is unused so left it disabled. */
@@ -6671,6 +6673,10 @@
 	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 	    "reconfig", CTLTYPE_INT | CTLFLAG_RW,
 	    dev, 0, hdaa_sysctl_reconfig, "I", "Reprocess configuration");
+	SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
+	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
+	    "init_clear", CTLFLAG_RW,
+	    &devinfo->init_clear, 1,"Clear initial pin widget configuration");
 	bus_generic_attach(dev);
 	return (0);
 }