via8233 sound card issues

Tim Aslat tim at
Mon Oct 11 17:58:21 PDT 2004

Hi All,

I'm having a small problem with the onboard sound in a project I'm
working on.  I can record and playback fine, however, during playback, I
lose the last couple of seconds of whatever it is I'm playing back.  I
have tried using wav/mp3 files but both produce the same problem.  I am
assuming that there is some kind of buffering problem, but I haven't got
the faintest idea what/how to fix it.

Hopefully relevant bits from dmesg:

pcm0: <VIA VT8235> port 0xc000-0xc0ff irq 22 at device 17.5 on pci0
pcm0: <Avance Logic ALC650 AC97 Codec>

cat result from /dev/sndstat:

FreeBSD Audio Driver (newpcm)
Installed devices:
pcm0: <VIA VT8235> at io 0xc000 irq 22 (5p/1r/4v channels duplex

If more information is required, I'm happy to provide it.



Tim Aslat <tim at>
Spyderweb Consulting
Phone: +61 0401088479

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