--- alsa-driver-hg20070908/alsa-kernel/pci/hda/patch_analog.c	2007-09-07 02:00:08.000000000 +0200
+++ alsa-driver-hg20070908-patched/alsa-kernel/pci/hda/patch_analog.c	2007-09-10 13:23:25.000000000 +0200
@@ -612,7 +612,7 @@
 	unsigned int present;
 
 	present = snd_hda_codec_read(codec, 0x1a, 0, AC_VERB_GET_PIN_SENSE, 0);
-	spec->jack_present = (present & 0x80000000) != 0;
+	spec->jack_present = (present & 0x80000000) == 0;
 	ad1986a_update_hp(codec);
 }