Serious feedback issue

[GoCubsGo]

Hi I have my PowerBook plugged into the ac plug, it is sitting on my desk, no other speakers are turned on around it. I've had this set up this way for weeks now. I opened Garage Band today and there was a huge screach so bad and OSX locked. I had to power down. I opened GB again and same thing. This time I was able to turn monitor off and no feedback issue. It was so loud someone thought it was a smoke alarm gone seriously wrong. I do not know what is happening. Nothing else is plugged into the PB.

 

[benbrignell]

What equipment are you using as in audio devices etc?

Is your built in mic disabled?

Garage Band Forum

http://www.garagebandforum.net

 

[neocell]

I had a similar problem when I pugged my guitar into my PB and opened GB. I had to switch the input sound from "internal mic" to "line in" in system preferences, sound. Maybe something switched it on you in the last couple of weeks.

jessica . Hi I have my PowerBook plugged into the ac plug, it is sitting on my desk, no other speakers are turned on around it. I've had this set up this way for weeks now. I opened Garage Band today and there was a huge screach so bad and OSX locked. I had to power down. I opened GB again and same thing. This time I was able to turn monitor off and no feedback issue. It was so loud someone thought it was a smoke alarm gone seriously wrong. I do not know what is happening. Nothing else is plugged into the PB.

 

[faintember]

I had to switch the input sound from "internal mic" to "line in" in system preferences, sound. Maybe something switched it on you in the last couple of weeks.

Sounds like the culprit to me. I had a simular problem with a Max/MSP patch i built, however for whatever reason, the computer switched from my MOTU to "internal mic". Dont know why, and it has not happened since. Gotta love using beta drivers for older audio equipment.