Re: iichb0: I2C error

sysctl just hangs here:

root@powermacg5:/home/bacon # sysctl -a|grep temp
net.inet6.ip6.use_tempaddr: 0
net.inet6.ip6.temppltime: 86400
net.inet6.ip6.tempvltime: 604800
net.inet6.ip6.prefer_tempaddr: 0
hw.usb.template: -1

Then dmesg shows:

iichb0: I2C error
ad74171: iicbus write failed
ad74171: iicbus write failed
ad74171: iicbus write failed
ad74171: iicbus write failed
ad74171: iicbus write failed
ad74171: iicbus read failed
ad74171: iicbus read failed
ad74171: iicbus write failed
ad74171: iicbus write failed
ad74171: iicbus write failed
ad74171: iicbus write failed
ad74171: iicbus read failed
ad74171: iicbus write failed
ad74171: iicbus write failed
ad74171: iicbus write failed
ad74171: iicbus read failed

Again, this is on 12.0-RELEASE and I use it only for ports testing.

Thanks,

     JB

On 2019-08-04 08:46, Francis Little wrote:
> Hi, I get loud fans on my G5 after a few mins (running 13-CURRENT).
>
> When the fans rev up, If you run something like:
>
> sysctl -a | grep temp:
>
> do they calm down?
>
> On mine it does so I have it in my crontab every 60 secs at the moment!
>
> Regards
>
> On Sun, 4 Aug 2019 at 14:38, Jason Bacon <[email protected] 
> <mailto:[email protected]>> wrote:
>
>     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
>     <[email protected] <mailto:[email protected]>> 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 more
>     >>> in dmesg:
>     >>>
>     >>> FreeBSD powermacg5.acadix  bacon ~ 211: dmesg|grep iichb0
>     >>> iichb0: <Keywest I2C controller> mem 0xf8001000-0xf8001fff irq
>     42 on
>     >>> unin0
>     >>> iicbus0: <OFW I2C bus> on iichb0
>     >>> iichb0: I2C error
>     >>> iichb0: <Keywest I2C controller> mem 0xf8001000-0xf8001fff irq
>     42 on
>     >>> unin0
>     >>> 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
>     > always been an issue on the PowerMac.  I just recently
>     established the
>     > pattern that it only happens after a cold boot, though. I also have
>     > an iMac G5 that does not exhibit this issue. Both are running
>     > 12.0-RELEASE.  If you think it might help, I can try a 13
>     snapshot at
>     > some point.
>     >
>     > Cheers,
>     >
>     >     JB
>     >
>     Cancel that pattern claim.  I've now seen it occur after a couple of
>     warm boots as well.  If I keep rebooting the problem eventually stops.
>
>     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  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  bacon ~ 835:
>
>     No fan issues.
>
>     -- 
>     Earth is a beta site.
>
>
>     _______________________________________________
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>     https://lists.freebsd.org/mailman/listinfo/freebsd-ppc
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>     "[email protected]
>     <mailto:[email protected]>"
>


-- 
Earth is a beta site.


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