Date: Sun, 14 Jul 2019 20:58:52 -0500 From: Jason Bacon <bacon4000@gmail.com> To: Justin Hibbits <jrh29@alumni.cwru.edu> Cc: "freebsd-ppc@freebsd.org" <freebsd-ppc@freebsd.org> Subject: Re: iichb0: I2C error Message-ID: <7cd57279-ee80-ef46-13e5-aa7f02f14bfa@gmail.com> In-Reply-To: <CAHSQbTDDaJ0c%2B_E4T0YGbAdVka3bnFP9Rec71j2c2qToYFqLuQ@mail.gmail.com> References: <bde639cb-bfab-3da3-f896-538c540b25b7@gmail.com> <CAHSQbTDDaJ0c%2B_E4T0YGbAdVka3bnFP9Rec71j2c2qToYFqLuQ@mail.gmail.com>
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On 2019-07-14 19:46, Justin Hibbits wrote: > On Sat, Jul 13, 2019 at 9:32 AM Jason Bacon <bacon4000@gmail.com> wrote= : >> >> 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 bacon ~ 211: dmesg|grep iichb0 >> iichb0: <Keywest I2C controller> mem 0xf8001000-0xf8001fff irq 42 on u= nin0 >> iicbus0: <OFW I2C bus> on iichb0 >> iichb0: I2C error >> iichb0: <Keywest I2C controller> mem 0xf8001000-0xf8001fff irq 42 on u= nin0 >> iicbus0: <OFW I2C bus> on iichb0 >> >> No more runaway fans. >> >> Does this provide any clues about the cause? > Hi Jason, > > How recently did this start occurring? Would you be able to bisect > 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 t= he=20 pattern that it only happens after a cold boot, though.=C2=A0 I also have= an=20 iMac G5 that does not exhibit this issue.=C2=A0 Both are running=20 12.0-RELEASE.=C2=A0 If you think it might help, I can try a 13 snapshot a= t=20 some point. Cheers, =C2=A0=C2=A0=C2=A0 JB --=20 Earth is a beta site.
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