[CUBE] Audio Dies [fixed!]

[Erik Ableson]

I think that I can now theorize a little more on the cause/effect/fix.

If you are using USB audio (and I think that this may also occur with 
any model using USB audio instead of the built-in) and the CPU or bus 
is taxed heavily it 'loses' it's connection to the USB port.  Now the 
problem is that this 'loss' is not advertised properly to the OS so 
that it still shows up in the Sound Control panel.

When you put a machine to sleep it still continues to push a trickle 
current to the USB bus so that it will wake immediately if there is a 
change in the devices attached to a USB connection. When you put the 
Cube to sleep it immediately detects (at the hardware layer) that 
speakers have been 'added' since they weren't there a moment ago as far 
as the hardware was concerned.  This forces the Cube to wake up again, 
this time with the speakers and the USB audio drivers loaded.

Following on this thought - for those of you with 'coma' Cubes, can 
someone try unplugging or attaching a USB device when the Cube is in a 
coma and see if this wakes it up?

Erik

On Friday, February 28, 2003, at 09:06 AM, Russ Maehl wrote:

> I will note that when I did the command-option-eject just to see what
> happened, the machine stayed in sleep and did not bounce back up on its
> own...as you have described.  Perhaps if my audio had gone south I 
> would
> have had the same result as you.