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weird powerbook noises

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David Ziv
11:42 PM ET (US)
My computer sometimes gives off an hysterical laugh, which is somewhat unnerving. What can I do?
02:57 PM ET (US)
BTW - I believe that the sound system is somehow involved (whether hardware, software, or both I don't know).

My reason is simple - the sound on my Powerbook 'sleeps' after a period of inactivity, and the 'buzz' goes away ... 'wake' the sound (usu. with a system event), and the buzz returns.

Now, I consider the 'sleeping sound' to be a B-U-G, and have search high and low for info about it ... but, bug or no, it does illustrate something interesting about the buzz.
02:50 PM ET (US)
You've hit a common complaint .. I suffer with it, and so do many others:

Apple Discussions - purring Ti book . . . !

... and even on Slashdot ...

Why Does a Screen Re-Draw Make Noises?
tomasPerson was signed in when posted
02:52 AM ET (US)
I also just noticed that when I have a blinking caret in a text box (like the one I'm typing in now) I get a little click sound from the computer with each blink. Is this what you're experiencing?
03:52 AM ET (US)
I definitely get a weird soft raspy buzz noise when I move my mouse pointer, especially when I'm dragging windows. Sometimes it happens when gifs are animating on screen too, which led me to believe it was disk related somehow.
Deleted by author 02-26-2003 03:13 AM
06:39 PM ET (US)
I get something very similar on my PowerBook (only 2 months old). It's not related to any physical activity (like typing, etc.) -- at first I thought it was a clock ticking -- it is _very_ regular but somewhat more than a second between "ticks" -- it sounds much like the hard drive sync'ing, although that doesn't seem to be what it is. Your explaination sounds logical (I don't think I've noticed it in battery-only mode either... will check that!).

Interest to hear any solutions!
Kevin Smith
10:33 AM ET (US)
I get the same thing, but it was well before 10.2.4. It started when my TiBook was about 9 months old. It seems to come and go, but I've never had it freeze any applications. My TiBook is about a year old now and it doesn't do it very often anymore. I still have no clue what causes the noise though.
10:12 AM ET (US)
Ever since 10.2.4, I got a high pitch soft whistle too often with my 15" TiBook. Mail.app, if open when I put the computer to sleep, always freezes after waking -- with that high whistle humming in the background. Clicks or keystrokes *halt* the whistle, or interrupt it for a flicker -- but then it's back on again, as soon as you release.

Force Quitting Mail stops the noise. I had heard the noise before -- notably with Help as of 10.2.0, but this is the most consistent it's been. Other apps function fine when Mail is crashed and whistling.