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Yeah..It's called feedback. go to your mixer and either toggle the Mic input to speaker or adjust the volume. There are 2 mixers in a sense. One is for everything that goes to the speaker ie The OUT mixer (also called PLAY), the other is for everything that can be recorded. The fact that it varies is due to (many things ;-} ) the amount of noise that the mic picks up when you close it and how loud the speaker is at this point. If you were using Faxworks with voice it will enable to mic to speaker path and adjust the gain every time. This permits the speaker phone to work in full duplex. ..peter.. ---------- From: Kevin W. Rudd[SMTP:kevin@umunhum.Stanford.EDU] Sent: Wednesday, September 24, 1997 12:44 PM To: thinkpad@cs.utk.edu Subject: Q: has anyone seen (heard) a high-pitched whine when closing 365xd? i have a 365xd running linux (redhat 4.2) that emits a shriek through the speaker while closing the lid. it is not directly suspend related and does not happen every time (although since it started it is fairly consistent) but i can't figure out a pattern if there is one. the volume control does affect it. i've run the self-tests in the hardware but don't know what else to look at. i've also looked at the area around the speaker but there doesn't seem to be anything surprising inside. what is puzzling is that today is the first time that i've noticed this in the 6 months that i've had the thinkpad. i'd certainly like to try and isolate the problem before calling ibm about it. thanks for any thoughts... puzzled and deaf, ---K