Since the last software update from Apple my optical output has stopped working and I wondered if anyone else had the same problem.
iMac, Mac OS X (10.6.8)
What update? You show as running Snow Leopard. What 'optical output'?
The last software update downloaded from Apple, when the message "there is new software etc" appeared a couple of weeks ago. Not sure exactly what the date was. I am running Snow leopard 10.6.8 on an early 2008 iMac and the optical output is the sound output.
It was working perfectly well before that update was installed but has not worked since. I wondered if anyone else had the same problem or whether it is something exclusive to this machine.
Your audio settings may have been changed.
Open Audio MIDI Setup (/Applications/Utilities/), then check the Audio Output setting.
Change the Audio Output setting to 44100.0 Hz.
Quit Audio MIDI Setup.
More info here on no sound from built-in speakers:
http://support.apple.com/kb/TS1574?viewlocale=en_US
More info on audio missing in iMovie here:
I have tried all the options available in Audio MIDI Output but with no success. The internal speakers work okay and when I plug the Toslink in there is a dim red light at the cable end but no sound is being transmitted through it at all.
Frustrating as it worked very well.
OK, try the following:
Resetting the SMC (System Management Controller) on Intel-based Macs:
http://support.apple.com/kb/ht3964 and
http://support.apple.com/kb/HT1237?viewlocale=en_US
Resetting your Mac's PRAM and NVRAM:
http://support.apple.com/kb/ht1379
If you are using a Wireless Keyboard:
Has anyone else found that their optical output has stopped working since the latest software update from Apple
