Comment 7 for bug 454789

This patch (for kernel 2.6.34) will make it work. Maybe not the best solution, but works for my Vaio TT

--- patch_realtek.c.orig 2010-05-18 09:30:14.254249965 +0200
+++ patch_realtek.c 2010-05-20 14:23:15.558978524 +0200
@@ -8830,6 +8830,10 @@
 };

 static struct hda_verb alc883_vaiott_verbs[] = {
+ /* Internal Mic */
+ {0x12, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
+ {0x12, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
+ {0x24, AC_VERB_SET_CONNECT_SEL, 11},
        /* HP */
        {0x15, AC_VERB_SET_CONNECT_SEL, 0x00},
        {0x15, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_HP},