Sound recording on FreeBSD 5.1

[Stefan Schwarzer]

Orion, thanks for your reply!

When I wrote the previous mail, I was at work, and had only limited
info available. Sorry.

By the way, the motherboard is an Asus P4G8X Deluxe.

On Wed, 27 Aug 2003, Orion Hodson wrote:
> /-- Stefan Schwarzer wrote:
> | My current system is FreeBSD Release 5.1 with sound hardware RealTek
> | 650LC AC97 on the motherboard. I can play sound fine, but I can't
> | record anything (and am quite sure that I have set up everything
> | correctly regarding the cabling and the mixer(8) settings). Is this
> | known behaviour or is there even a patch? I tried recording with
> | audio/gramofile from the ports collection.
>
> Can you also post the output of 'cat /dev/sndstat'?  The AC97 codec is just
> one component in your sound system and probably not related to the recording
> problem.

$ uname -a
FreeBSD warpy.sschwarzer.net 5.1-RELEASE-p2 FreeBSD 5.1-RELEASE-p2 #17: Fri Aug 22 22:45:47 CEST 2003     root at warpy.sschwarzer.net:/usr/obj/usr/src/sys/WARPY  i386

$ cat /dev/sndstat
FreeBSD Audio Driver (newpcm)
Installed devices:
pcm0: <Intel 82801DB (ICH4)> at io 0x9800, 0x9400 irq 5 bufsz 16384 (1p/1r/0v channels duplex default)

$ dmesg | grep pcm
pcm0: <Intel 82801DB (ICH4)> port 0x9400-0x943f,0x9800-0x98ff mem 0xe1000000-0xe10000ff,0xe1800000-0xe18001ff irq 5 at device 31.5 on pci0
pcm0: <Avance Logic ALC650 AC97 Codec>

> Can you provide some additional info about the recording problem? e.g. you've
> checked the mixer rec input, mixer gain, but is any data is produced?

$ mixer
Mixer vol      is currently set to  75:75
Mixer pcm      is currently set to  25:25
Mixer speaker  is currently set to  75:75
Mixer line     is currently set to  75:75
Mixer mic      is currently set to   0:0
Mixer cd       is currently set to  75:75
Mixer rec      is currently set to   0:0
Mixer line1    is currently set to  75:75
Mixer phin     is currently set to   0:0
Mixer phout    is currently set to   0:0
Mixer video    is currently set to  75:75

$ mixer =rec mic
Recording source: mic

$ mixer
Mixer vol      is currently set to  75:75
Mixer pcm      is currently set to  25:25
Mixer speaker  is currently set to  75:75
Mixer line     is currently set to  75:75
Mixer mic      is currently set to   0:0
Mixer cd       is currently set to  75:75
Mixer rec      is currently set to   0:0
Mixer line1    is currently set to  75:75
Mixer phin     is currently set to   0:0
Mixer phout    is currently set to   0:0
Mixer video    is currently set to  75:75

$ mixer mic 75
Setting the mixer mic from 0:0 to 75:75.

$ cp /dev/audio test.au  # about 40 s
^C

$ ls -l test.au
-rw-r--r--  1 schwa  schwa  262144 Aug 27 20:41 test.au

The file test.au consists of 262144 bytes with the value 0xFE.

> If so, does it sound garbled, inaudible, etc...

When I do

$ cp test.au /dev/audio

I hear nothing (silence) over the headphones.

Stefan