On Nov 1, 2011, at 6:14 PM, jfMac wrote:
Can anybody else "chime" in here on the red light optical audio port?
Always lit up?
Yes, it's always lit up red.
I did bite the bullet, and reset the PMU. The reset made <no>
difference,
so no internal speaker and thus no chime on startup.
Other ideas?
The internal speaker is disabled when any speaker/headphones jack is
plugged into the speaker/headphones port on the back. If this speaker/
headphones port is physically damaged it could possibly not enable the
internal speaker to work properly. If this is the case, you might be
able to "finagle" or bend some contact (WITH COMPUTER OFF) to get it
working again if you can see what's wrong. Otherwise, the port would
need replacement.
Have you tried booting with speakers or headphones to see if the chime
is heard? Note, the volume must be turned up if the speakers or
headphones have manual volume adjustment.
There are two places in OS X where sound is controlled, one is System
Preferences>Sound, and the other is Applications>Utilities>Audio MIDI
Setup. You might check both to be certain a "mute" box isn't checked?
It's possible the startup chime was disabled via Terminal command or
by a 3rd party Preference Pane or app? There is a special System
Preference Pane called "Startup Sound" which can custom control the
volume of the startup chime, so you might want to install this and see
if it has any effect:
<http://www5e.biglobe.ne.jp/~arcana/index.en.html>
Anybody know which kext is in control of the optical
audio port?
I believe all sound is handled in AppleHDA.kext. Your optical port is
normal, there's nothing for you to mess with in this kext.
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