Re: PowerMac G5 fans run out of control with kernel4.17.0-3-powerpc64 but not with 4.16.0-1-powerpc64

[Frank Scheiner <frank.scheiner@web.de>]

On 08/26/2018 01:35 PM, Linux User #330250 wrote:
> Am 26.08.18 um 12:48 schrieb John Paul Adrian Glaubitz:
> > One of the most pressing problems on Debian powerpc/ppc64 is
> > the deprecation of Yaboot. Yaboot is completely unmaintained these days and should
> > have been replaced with GRUB long time ago. If you install Debian powerpc/ppc64 on
> > an IBM-based system (CHRP-IBM or whatever it's called), the installer will actually
> > install GRUB. On Mac systems (NewWorld), it will install Yaboot with the various
> > problems that people are experiencing.
> >
> > Getting GRUB work on PPC Macs requires an extra utility which is currently part
> > of the Yaboot package so this needs some extra work. But we have worked on this
> > in the past and we hope to get this finished soon. Then we have one annoyance
> > less to worry about.
>
>
> What is this tool that is missing?

A working device-to-ofpath translator.

AFAIR during testing in late 2017 the only tool that worked reliably on 
most NewWorld PowerMac and Xserve machines was `ofpath` which is part of 
the yaboot package as Adrian already mentioned. So not maintained 
(because part of yaboot) and missing when yaboot is dropped.

The other available tool `ofpathname` is meant for IBM machines and 
gives wrong results on Apple machines (and also on IBM machines). The 
tool `grub-ofpathname` from GRUB didn't work as expected during my testing.

See e.g. [1] for some background.

[1]: https://lists.debian.org/debian-powerpc/2017/11/msg00086.html