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Sun, 04 Aug 2019 06:37:45 -0700 (PDT) Received: from coral.acadix.biz ([2605:a000:bc45:5f00:223:24ff:fe37:c4d7]) by smtp.gmail.com with ESMTPSA id m10sm144138073ioj.75.2019.08.04.06.37.43 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Sun, 04 Aug 2019 06:37:44 -0700 (PDT) Subject: Re: iichb0: I2C error From: Jason Bacon To: Justin Hibbits Cc: "freebsd-ppc@freebsd.org" References: <7cd57279-ee80-ef46-13e5-aa7f02f14bfa@gmail.com> Message-ID: Date: Sun, 4 Aug 2019 08:37:42 -0500 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <7cd57279-ee80-ef46-13e5-aa7f02f14bfa@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable Content-Language: en-US X-Rspamd-Queue-Id: 461hmB6wQvz4Wrn X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=Z7fduH+0; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of bacon4000@gmail.com designates 2607:f8b0:4864:20::d42 as permitted sender) smtp.mailfrom=bacon4000@gmail.com X-Spamd-Result: default: False [-2.96 / 15.00]; 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RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Aug 2019 13:37:48 -0000 On 2019-07-14 20:58, Jason Bacon wrote: > On 2019-07-14 19:46, Justin Hibbits wrote: >> On Sat, Jul 13, 2019 at 9:32 AM Jason Bacon wrot= e: >>> >>> On my PowerMac G5, I consistently get this error after a cold boot: >>> >>> iichb0: I2C error >>> >>> After a minute or so, the fans ramp up to maximum. >>> >>> The error also consistently goes away after a warm reboot. Nothing mo= re >>> in dmesg: >>> >>> FreeBSD powermacg5.acadix=C2=A0 bacon ~ 211: dmesg|grep iichb0 >>> iichb0: mem 0xf8001000-0xf8001fff irq 42 on = >>> unin0 >>> iicbus0: on iichb0 >>> iichb0: I2C error >>> iichb0: mem 0xf8001000-0xf8001fff irq 42 on = >>> unin0 >>> iicbus0: on iichb0 >>> >>> No more runaway fans. >>> >>> Does this provide any clues about the cause? >> Hi Jason, >> >> How recently did this start occurring?=C2=A0 Would you be able to bise= ct >> the builds from a known-good starting point? >> >> Thanks. >> >> - Justin > I've never run a powerpc system until a few months ago, and this has=20 > always been an issue on the PowerMac.=C2=A0 I just recently established= the=20 > pattern that it only happens after a cold boot, though.=C2=A0 I also ha= ve=20 > an iMac G5 that does not exhibit this issue. Both are running=20 > 12.0-RELEASE.=C2=A0 If you think it might help, I can try a 13 snapshot= at=20 > some point. > > Cheers, > > =C2=A0=C2=A0=C2=A0 JB > Cancel that pattern claim.=C2=A0 I've now seen it occur after a couple of= =20 warm boots as well.=C2=A0 If I keep rebooting the problem eventually stop= s. Always seems to follow I2C error in dmesg, though. Trying to mount root from ufs:/dev/ada0s3 [rw]... SMP: 2 CPUs found; 2 CPUs usable; 1 CPUs woken lo0: link state changed to UP gem0: link state changed to DOWN gem0: link state changed to UP Security policy loaded: MAC/ntpd (mac_ntpd) iichb0: I2C error FreeBSD powermacg5.acadix=C2=A0 bacon ~ 835: Fans go nuts after a few minutes. Reboot... Trying to mount root from ufs:/dev/ada0s3 [rw]... SMP: 2 CPUs found; 2 CPUs usable; 1 CPUs woken lo0: link state changed to UP gem0: link state changed to DOWN gem0: link state changed to UP Security policy loaded: MAC/ntpd (mac_ntpd) FreeBSD powermacg5.acadix=C2=A0 bacon ~ 835: No fan issues. --=20 Earth is a beta site.