soundcard issue in fbsd 4.9stable

[Mr. X]

i have had this problem ever since i enabled the soundcard in the kernel. any sound "tries" to play but skips to the end
and will not play (xmms, realplayer). sort of a strange echo sound. the card is in a sony vaio laptop model PCG-GRZ610.

here is the output of vital commands:

zwan# grep pcm /var/run/dmesg.boot
pcm0: <Intel ICH3 (82801CA)> port 0x18c0-0x18ff,0x1c00-0x1cff irq 9 at device 31.5 on pci0
pcm0: <Yamaha YMF753 AC97 Codec>

zwan# cat /dev/sndstat
FreeBSD Audio Driver (newpcm)
Installed devices:
pcm0: <Intel ICH3 (82801CA)> at io 0x1c00, 0x18c0 irq 9 bufsz 16384 (1p/1r/0v channels duplex)

zwan# uname -a
FreeBSD zwan.com 4.9-STABLE FreeBSD 4.9-STABLE #1: Tue Nov  4 18:25:43 PST 2003     root at zwan.com:/usr/obj/usr/src/sys/k04-1103  i386

zwan# ls -la /dev/dsp0 /dev/dsp
lrwxrwxrwx  1 root  wheel  4 Nov  2 23:24 /dev/dsp -> dsp0
lrwxrwxrwx  1 root  wheel  6 Nov  2 23:24 /dev/dsp0 -> dsp0.0

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

i edited :

/sys/dev/sound/pci/ich.c

with : 

sc->codec = AC97_CREATE(dev, sc, ich_ac97);

if (sc->codec == NULL)

goto bad;

ac97_setflags(sc->codec, AC97_F_EAPD_INV);   <-- added line

mixer_init(dev, ac97_getmixerclass(), sc->codec);

-------------------------------------------------------------------------------------------------------

then did buildworld / kernel, install kernel,  single user mode .. installworld and mergemaster -p

...before i added the above line in /sys/dev/sound/pci/ich.c 

i used to get this error repeating with grep : 

# grep pcm /var/run/dmesg.boot

pcm0: <Intel ICH3 (82801CA)> port 0x18c0-0x18ff,0x1c00-0x1cff irq 9 at device 31.5 on pci0

pcm0: <Yamaha YMF753 AC97 Codec>

pcm0:play:0: play interrupt timeout, channel dead

pcm0:play:0: play interrupt timeout, channel dead

pcm0:play:0: play interrupt timeout, channel dead

pcm0:play:0: play interrupt timeout, channel dead



since i edited ich.c with the new line .,. i do not get this error anymore .. but i have the same effect with the sound.

basically it does not work period.. 

any help would be greatly appreciated.



thanks  -warren

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