Mac Pro and Audio

[John Labovitz]

On Nov 19, 2006, at 12:09pm, LuKreme wrote:

> When i press the volume buttons on my keyboard I get a quartz  
> affect showing the volume at full level and a "do not" symbol  
> underneath.
>
> The audio out is set to "Line Out" and I have speakers connected to  
> the machine, but I can't change volume levels.

You're not plugging in a digital mini-TOSlink cable, are you?  It's a  
hybrid digital/analog plug.  I think I noticed once that if I had the  
mini-TOSlink cable in there (to an iPod Hifi), the volume couldn't be  
changed on the Mac.

--John