Strange clicking noise from my laptop hard drive

From	Philip Ashmore <contact@philipashmore.com>
Newsgroups	linux.debian.user
Subject	Strange clicking noise from my laptop hard drive
Date	2017-05-10 21:50 +0200
Message-ID	<tFFMt-4KS-3@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hi there.

I managed to record it using my laptops built-in microphone.

To those who would prefer a description:
It starts fast and slows down. I opened the file with Audacity and 
determined the intervals to be 0.1, 0.3, 0.6, 10, 15 seconds, then it 
repeats.

It sounds like some kind of protocol negotiation algorithm that requires 
a disk sync when the polling time doubles.

Here's a link for your listening pleasure:
https://www.dropbox.com/s/apdr1o056tam5ie/click.wav?dl=0

I'm hoping it's some cron job, or DropBox, Trinity Desktop, wifi, smart 
disk status monitoring, nVidia, Intel, ... not a virus trying to phone home.

I'm really hoping that someone reading this will go "oh that thing" and 
know what it is instantly.

Curiously it doesn't happen every day.

Regards,
Philip Ashmore

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Strange clicking noise from my laptop hard drive Philip Ashmore <contact@philipashmore.com> - 2017-05-10 21:50 +0200
  Re: Strange clicking noise from my laptop hard drive Jhoanir Torres <jhoanir@gmail.com> - 2017-05-10 22:00 +0200
    Re: Strange clicking noise from my laptop hard drive Philip Ashmore <contact@philipashmore.com> - 2017-05-11 19:30 +0200
      Re: [trinity-users] Re: Strange clicking noise from my laptop hard  drive Philip Ashmore <contact@philipashmore.com> - 2017-05-19 15:40 +0200
        Re: [trinity-users] Re: Strange clicking noise from my laptop hard drive Jeremy Nicoll <jn.ml.dbn.25@letterboxes.org> - 2017-05-19 16:20 +0200
        Re: [trinity-users] Re: Strange clicking noise from my laptop hard  drive RavenLX <ravenlx@sitesplace.net> - 2017-05-21 15:00 +0200
  Re: Strange clicking noise from my laptop hard drive Bob Weber <bobrweber@gmail.com> - 2017-05-10 22:30 +0200
    Re: Strange clicking noise from my laptop hard drive Sven Hartge <sven@svenhartge.de> - 2017-05-10 22:50 +0200

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