On Sun, 14 Jan 2001, Michael Wells wrote:
> Hi all,
>
> I just got round to popping the lid on my machine and installing a
> Soundblaster 64 PCI card. I already had pcm in my kernel. It's working,
> but there are some Strange Things Happening.
>
> Firstly, here's /dev/sndstat:
>
> FreeBSD Audio Driver (newpcm) Jan 5 2001 12:50:04
> Installed devices:
> pcm0: <AudioPCI ES1371> at io 0xec00 irq 16 (1p/1r channels duplex)
>
> (Aside: is that really the chipset on the Soundblaster 64?). I get kernel warnings
>since I installed the card:
>
> Jan 14 13:00:15 sunrise /boot/kernel/kernel: pcm0: hwptr went backwards
> 2112 -> 1888
>
> I'm using FreeBSD Current, built on 5 January 2001.
>
> What I've got is some very strange sounds when I run mpg123 on a
> standard MP3 file. It's going through /dev/dsp and appears to play the
> samples at a very slow speed, with weird echoes. It's like a special
> effect. Using the -a flag with mpg123 allows me to play through
> /dev/audio, which sounds right except that it's distorted. At all
> volume levels, the audio sounds overdriven, and I know this is not
> due to impedance mismatches or faults elsewhere having used the card in
> Linux with the same cabling arrangements, amplifier etc.
>
> If this is a known problem, I'll stop for now and watch out for fixes.
> If it's not the expected behaviour from the PCM driver though, can
> anyone advise?
Okay, just checked and it appears tha htis is the same error that I'm
seeing on mine, as reported yesterday ... not sure if its known or not,
but its not "just you" ...
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