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Date:      Sun, 19 Jan 2020 08:38:10 +0000
From:      Francis Little <oggy@farscape.co.uk>
To:        FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>
Subject:   G5 Quad Fans full speed after 1 min
Message-ID:  <CAGSRtz76TC44UiECMepLAZjXE=H33sg4OFLJpmZpNCSEwE=ETQ@mail.gmail.com>

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Hi,

My G5 Quad is running current from a few days ago, but this issue has been
happening for a long time.

After about 1 min of uptime, the fans go full speed.

As soon as I query anything like CPU temp or fan rpm with sysctl, the fans
return to a normal speed.

1 min later the fans go full speed again.

I've been working round this for some time with a cron job that runs sysctl
with one of the cpu temp sensors to calm the system.

If I boot to OS X 10.5 and load the system, the fans are stable.

Does anyone else get this?

Regards



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