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Date:      Mon, 14 Jan 2008 02:45:22 +0530
From:      "Mehul Ved" <mehul.n.ved@gmail.com>
To:        freebsd-multimedia@freebsd.org
Subject:   sound works randomly
Message-ID:  <c1e7523f0801131315y768b1dceu52b3804a8526087c@mail.gmail.com>

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Hi,
I have a Via8233 onboard sound card. After reading a few docs and
installing oss, I got sound to work but the problem is that it works
sometimes and just doesn't work other times. This only happens with
FreeBSD, with linux it's working fine all the time so I believe I can
rule out hardware problems.
Here is the sound card information that might be useful

--------------------------------------------
pciconf -lv

pcm0@pci0:17:5: class=0x040100 card=0x04301462 chip=0x30591106 rev=0x60 hdr=0x00
    vendor   = 'VIA Technologies Inc'
    device   = 'VT8233/33A/8235/8237 AC97 Enhanced Audio Controller'
    class    = multimedia
    subclass = audio
--------------------------------------------

--------------------------------------------
kldstat

Id Refs Address    Size     Name
 1   16 0xc0400000 33e03c   kernel
 2    1 0xc073f000 1ada4    linux.ko
 3    1 0xc075a000 6170     snd_via8233.ko
 4    2 0xc0761000 22b88    sound.ko
 5    1 0xc0784000 693310   nvidia.ko
 6    1 0xc0e18000 59f20    acpi.ko
 7    2 0xc6191000 79000    osscore.ko
 8    1 0xc6211000 5000     via8233.ko
 9    1 0xc6227000 2000     vmix.ko
-------------------------------------------

-------------------------------------------
/etc/rc.conf
oss_enable="YES"
-------------------------------------------

-------------------------------------------
/boot/loader.conf
snd_via8233_load="YES"
-------------------------------------------

-------------------------------------------
cat /dev/sndstat
FreeBSD Audio Driver (newpcm)
Installed devices:
pcm0: <VIA VT8237> at io 0xe700 irq 22 kld snd_via8233 (5p/1r/0v
channels duplex default)
-------------------------------------------

cat <some audio> > /dev/dsp doesn't return any sound.

-------------------------------------------
 ossdetect -v
Detected VIA VT8233/8235/8237
Detected OSS Transparent Virtual Mixing Architecture
-------------------------------------------

-------------------------------------------
 ossinfo -v
Version info: OSS 4.0 (b071114/200801041811) (0x00040003) CDDL
Platform: FreeBSD/i386 6.2-RELEASE FreeBSD 6.2-RELEASE #3: Sun Jan  6
14:16:34 IST 2008
root@bsd.mehulved.com:/usr/obj/usr/src/sys/MYKERNEL (bsd.mehulved.com)

Number of audio devices:        0
Number of audio engines:        0
Number of MIDI devices:         0
Number of mixer devices:        0


Device objects
 0: vmix0 OSS transparent virtual support

MIDI devices (/dev/midi*)

Mixer devices (/dev/mixer*)

Audio devices
--------------------------------------------

--------------------------------------------
 osstest -v
Sound subsystem and version: OSS 4.0 (b071114/200801041811) (0x00040003)
Platform: FreeBSD/i386 6.2-RELEASE FreeBSD 6.2-RELEASE #3: Sun Jan  6
14:16:34 IST 2008
root@bsd.mehulved.com:/usr/obj/usr/src/sys/MYKERNEL


NOTICE! You don't have any audio devices available.
        It looks like your audio hardware was not recognized
        by OSS. Please contact 4Front technologies for help
        (http://www.opensound.com/support.cgi). Don't forget to
        include your soundon.log file to the support request.
--------------------------------------------

--------------------------------------------
 ossmix
SNDCTL_MIX_NREXT: Device not configured
--------------------------------------------

I also checked
--------------------------------
fstat | grep dsp
--------------------------------
and killed any process if they were running.
None of it helped. All of a sudden again I have sound working right now.
Any other info will be needed?

Some links I refered to are
1)http://bsdtips.utcorp.net/mediawiki/index.php/Setting_up_your_sound_card
2)http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/sound-setup.html
and some forums



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