linux-kernel - Re: Loud "pop" coming from hard drive on reboot

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Date:	Sun, 15 Apr 2007 18:07:04 +0200
From:	emisca <emisca.ml@...il.com>
To:	"Chuck Ebbert" <cebbert@...hat.com>
Cc:	"Jan Engelhardt" <jengelh@...ux01.gwdg.de>,
	"Bartlomiej Zolnierkiewicz" <bzolnier@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org
Subject: Re: Loud "pop" coming from hard drive on reboot

I can confirm this, I have a Seagate Momentus 5400.3 sata disk, and it
spins off, respin up and again off when I halt my notebook.
I had before this disk an IBM/Hitachi one, and it doesn't have this behaviour.

Take a look at this bug report:
https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.17/+bug/67810

There are some references and some patches against 2.6.20 kernel. This
bug is confirmed there.

Bye

2007/4/11, Chuck Ebbert <cebbert@...hat.com>:
> Jan Engelhardt wrote:
> > On Apr 11 2007 17:07, Chuck Ebbert wrote:
> >> When I reboot my notebook, it powers off and powers back on.
> >> On poweroff a loud snapping noise seems to be coming from the
> >> hard drive. Today I noticed there is no "shutdown: hda" on
> >> the console when I reboot. Whne I do a normal poweroff the
> >> message is displayed and there is no noise. Should the IDE
> >> code be changed so it always shuts down the drive?
> >
> > What sort of notebook? What sort of harddisk?
>
> Compaq Presario V2000 series, with a new Seagate ST9120821A
> 120GB 5400RPM drive.
>
> > Is it as loud as `hdparm -y /dev/hdX"?
>
> That makes no noise at all except normal drive seek noises.
>
> > Try `smartctl -d ata -a /dev/hdX | grep -i unload` too.
>
> Hmm.
>
> Power_Cycle_Count ... 108
> Power-Off_Retract_Count ... 90
>
> I did a normal poweroff and the retract count went to 91.
> There is an almost-unnoticeable click when I do it that way.
>
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