Last old PowerMac G5 that I have access to may be starting to fail: iichb0: I2C error

[Kevin Bowling]

I think there have been generic i2c changes lately too, Mark if you run an
older release does it have the same symptom?

On Fri, Apr 16, 2021 at 1:42 PM Brandon Bergren <bdragon at freebsd.org> wrote:

> Do you have a dmesg? There's some bits in the thermal drivers I've been
> looking into recently where I have certain machines where the thermal chip
> is left in automatic mode but also the system attempts to drive it in
> manual mode, which causes things like the fans jerking on and off and
> spurious 103.0C readings on the temperature probe the chip is internally
> sampling. I half wonder if there's a similar issue causing us to
> accidentally crash the chip or something.
>
> On Thu, Apr 15, 2021, at 10:53 PM, Mark Millard via freebsd-ppc wrote:
> > The 2-socket/1-core-each PowerMac G5 has had several
> > sudden crashes recently, mostly while idle, usually
> > with no messages. No response but to power controls
> > once it fails.
> >
> > But I got one example (so far) where it reported
> > something as it failed (and the fans then started
> > to speed up):
> >
> > iichb0: I2C error
> >
> > The message was even recorded in /var/log/messages .
> >
> > The kernel and world have not been updated since
> > back around 2021-Mar-12 or so. So the behavior
> > appears to be new, without a system software change
> > in a similar time frame.
> >
> > ===
> > Mark Millard
> > marklmi at yahoo.com
> > ( dsl-only.net went
> > away in early 2018-Mar)
> >
> > _______________________________________________
> > freebsd-ppc at freebsd.org mailing list
> > https://lists.freebsd.org/mailman/listinfo/freebsd-ppc
> > To unsubscribe, send any mail to "freebsd-ppc-unsubscribe at freebsd.org"
> >
>
>
> --
>   Brandon Bergren
>   bdragon at FreeBSD.org
> _______________________________________________
> freebsd-ppc at freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-ppc
> To unsubscribe, send any mail to "freebsd-ppc-unsubscribe at freebsd.org"
>