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Date:      Sat, 7 Nov 2020 07:49:26 -0600
From:      Jason Bacon <bacon4000@gmail.com>
To:        freebsd-ppc@freebsd.org
Subject:   Re: Question about xserve G5
Message-ID:  <eadf2c5f-f32e-2856-5520-be8c0a06cec7@gmail.com>
In-Reply-To: <7647de21-b22d-4204-8dad-070590421eca@www.fastmail.com>
References:  <DB8PR04MB68602F9341DEED4BA6808046AC140@DB8PR04MB6860.eurprd04.prod.outlook.com> <B20755EC-8EA1-4326-B4D8-EF657ACF73ED@macmic.franken.de> <DB8PR04MB6860543600F2C6FDEDF32BD8AC140@DB8PR04MB6860.eurprd04.prod.outlook.com> <88d23ee0-765d-1b82-4318-2c8359018b1a@freebsd.org> <DB8PR04MB6860BC2392B1637417EF8977AC140@DB8PR04MB6860.eurprd04.prod.outlook.com> <DB8PR04MB686092F96B5AEE44D82A1A97AC140@DB8PR04MB6860.eurprd04.prod.outlook.com> <0f4a1ee8-a37f-ea3d-6807-bb2431235a82@gmail.com> <DB8PR04MB6860FB3DE5056A919EFDB71CAC150@DB8PR04MB6860.eurprd04.prod.outlook.com> <de558c8e-f31c-482b-83ec-a8bef521c224@www.fastmail.com> <DB8PR04MB68608DF3EF55DE81641673C3AC150@DB8PR04MB6860.eurprd04.prod.outlook.com> <ee18bb0c-e600-46d9-a8ce-44fd1561b441@www.fastmail.com> <e6611c33-469a-4350-b03b-34f92902163f@www.fastmail.com> <DB8PR04MB6860B75A191D4DB320D71C1DACED0@DB8PR04MB6860.eurprd04.prod.outlook.com> <7647de21-b22d-4204-8dad-070590421eca@www.fastmail.com>

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On 11/6/20 9:58 AM, Brandon Bergren wrote:
> On Fri, Nov 6, 2020, at 2:59 AM, Javi Hotmail wrote:
>  =20
>> Internally it was complaining about not being able to read the I2C=C2=A0=
 (I
>> assume from the PMU); But anyways it seems to be more or less working
>> now, I'll switch back to FBSD and see how it goes.
>>
> OK, yeah, lack of I2C communication would definitely explain the fans s=
uddenly ramping up to maximum, since it's the obvious failsafe to use har=
dware wise when communication gets lost and the thermal management system=
 is no longer aware of its temperature. Better to err on the side of nois=
e than risk overheating anything.
>
I see I2C errors on my PowerMac G5 as well, but they don't always=20
correlate with the fans ramping up.

--=20
Earth is a beta site.





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