diff --git a/src/i830.h b/src/i830.h
index 05b0358..132f089 100644
--- a/src/i830.h
+++ b/src/i830.h
@@ -840,6 +840,7 @@ extern const int I830CopyROP[16];
 #define QUIRK_IGNORE_LVDS		0x00000002
 #define QUIRK_IGNORE_MACMINI_LVDS 	0x00000004
 #define QUIRK_PIPEA_FORCE		0x00000008
+#define QUIRK_IVCH_NEED_DVOB		0x00000010
 extern void i830_fixup_devices(ScrnInfoPtr);
 
 #endif /* _I830_H_ */
diff --git a/src/i830_dvo.c b/src/i830_dvo.c
index e7342b0..81d5601 100644
--- a/src/i830_dvo.c
+++ b/src/i830_dvo.c
@@ -83,7 +83,7 @@ struct _I830DVODriver i830_dvo_drivers[] =
 	.type = I830_OUTPUT_DVO_LVDS,
 	.modulename = "ivch",
 	.fntablename = "ivch_methods",
-	.dvo_reg = DVOB,
+	.dvo_reg = DVOA,
 	.address = 0x04, /* Might also be 0x44, 0x84, 0xc4 */
 	.symbols = ivch_symbols
     },
@@ -398,6 +398,7 @@ i830_dvo_get_current_mode (xf86OutputPtr output)
 void
 i830_dvo_init(ScrnInfoPtr pScrn)
 {
+    I830Ptr pI830 = I830PTR(pScrn);
     I830OutputPrivatePtr intel_output;
     int ret;
     int i;
@@ -431,6 +432,11 @@ i830_dvo_init(ScrnInfoPtr pScrn)
 	ret_ptr = NULL;
 	drv->vid_rec = LoaderSymbol(drv->fntablename);
 
+	if (!strcmp(drv->modulename, "ivch") &&
+	    pI830->quirk_flag & QUIRK_IVCH_NEED_DVOB) {
+	    drv->dvo_reg = DVOB;
+	}
+
 	/* Allow the I2C driver info to specify the GPIO to be used in
 	 * special cases, but otherwise default to what's defined in the spec.
 	 */
diff --git a/src/i830_quirks.c b/src/i830_quirks.c
index 853a33e..002649b 100644
--- a/src/i830_quirks.c
+++ b/src/i830_quirks.c
@@ -59,6 +59,11 @@ static void quirk_mac_mini (I830Ptr pI830)
     pI830->quirk_flag |= QUIRK_IGNORE_MACMINI_LVDS;
 }
 
+static void quirk_ivch_dvob (I830Ptr pI830)
+{
+	pI830->quirk_flag |= QUIRK_IVCH_NEED_DVOB;
+}
+
 /* keep this list sorted by OEM, then by chip ID */
 static i830_quirk i830_quirk_list[] = {
     /* Aopen mini pc */
@@ -91,6 +96,8 @@ static i830_quirk i830_quirk_list[] = {
 
     /* Toshiba Satellite U300 has no TV output */
     { PCI_CHIP_I965_GM, 0x1179, 0xff50, quirk_ignore_tv },
+    /* Toshiba i830M laptop (fix bug 11148) */
+    { PCI_CHIP_I830_M, 0x1179, 0xff00, quirk_ivch_dvob },
 
     /* Samsung Q35 has no TV output */
     { PCI_CHIP_I945_GM, 0x144d, 0xc504, quirk_ignore_tv },
@@ -100,6 +107,9 @@ static i830_quirk i830_quirk_list[] = {
     /* Dell Inspiron 510m needs pipe A force quirk */
     { PCI_CHIP_I855_GM, 0x1028, 0x0164, quirk_pipea_force },
 
+    /* Sony vaio PCG-r600HFP (fix bug 13722) */
+    { PCI_CHIP_I830_M, 0x104d, 0x8100, quirk_ivch_dvob },
+
     { 0, 0, 0, NULL },
 };