Subject: Re: Low audio volume - azalia chipset
To: Mark Randelhoff <markr@cat.co.za>
From: Sigmund Skjelnes <skjelnes@robin.no>
List: netbsd-help
Date: 02/17/2006 15:06:26
Check that the plug is in the correct socket, and if possible that the 
amplifier and speakers are operating properly.

Sigmund

Mark Randelhoff wrote:

> Hi
> Has anyone experienced low audio volumes when using netbsd 3 with the 
> Intel 945 GCZ Classic Btx motherboard.
> I seem to be able to play wav files but they are very low volume. Very 
> low.
>
> I have tried to increase the audio.play.gain from 127 to 255 but it 
> remains set to 127 (i.e. will not accept 255).
> I have looked at the various mixerctl output options and set the 
> output channels to boost = on and volume16=255.
> Also when I reboot the system the hum on the speaker is very loud - I 
> guess because I have the volume on max.
>
> It seems specific to this 945 chipset. I have tried netbsd on an old 
> intel 865 based chipset and the volume controls work well (same wav 
> file).
> The audio chipset on the 945 is the azalia revision 50.1 and is picked 
> up by the kernel on a boot.
> The kde sound configuration panel indicates that there are no devices 
> - which I thought was strange. On the 865 motherboard it displays the 
> auich0 device.
>
> I have also tested the motherboard using windows XP and the audio 
> plays back fine when using the wave volume control. Interestingly the 
> master volume control is disabled !
>
> So either I am being dumb (quite possible) or the audio chipset 
> drivers (azalia) are not functioning properly.
>
> Any help would be *much appreciated*
>
> Kind regards
> Mark
>
>