Sound will play either through the built-in speaker or through the front or rear headphone jacks. Input can come from the front or rear microphone jacks, the rear Line-In jack, or internally (such as a wav file or audio CD).

Trying Sound
You can demonstrate your workstation's sound capabilities with the following commands:

Troubleshooting
If you're having problems playing sound on your workstation, check the following items:

1. The volume may be turned down. Use one of the audio mixer applications to control the volume (see above).

2. The sound and MIDI drivers are installed into the kernel via the following lines in /etc/conf.modules:

     
   alias sound ad1816
   pre-install sound /sbin/insmod sound dmabuf=1
   options ad1816 io=0x500 irq=5 dma=0 dma2=3 ad1816_clockfreq=33000
   alias midi opl3
   options opl3 io=0x388
   

   There will be additional lines in /etc/conf.modules for networking and other drivers, but if your sound and midi lines do not match the above, it may cause problems.

3. The BIOS settings should be their default ("Auto") settings for sound and MIDI. The settings can be found in the BIOS Setup screens in the Advanced tab under Integrated Audio Device.

4. If your audio devices are configured correctly, the following should show up from /bin/dmesg:

     
   ad1816: AD1816 sounddriver Copyright (C) 1998 by Thorsten Knabe
   ad1816: $Header: /home/tek/CVSROOT/sound22/ad1816.c,v 1.3 
   	1999/04/18 16:41:41 tek Exp $
   ad1816: io=0x500, irq=5, dma=0, dma2=3, clockfreq=33000, 
   	options=0 isadmabug=0
   ad1816: detect(500)
   ad1816: detect() - Detected OK
   ad1816: AD1816 Version: 3 YM3812 and OPL-3 driver Copyright 
   	(C) by Hannu Savolainen, Rob Hooft 1993-1996
   

5. If wav and MIDI sounds play but CD audio does not, the audio connector on the back of the CD drive may have been disconnected.

6. If you get a lot of noise and distortion during a recording, turn down the "Rec" level in the mixer.