Re: PowerMac G5 fans run out of control with kernel4.17.0-3-powerpc64 but not with 4.16.0-1-powerpc64
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? As far as I rememeber, two years ago
or more, I had to make my own grub.cfg and CHRP loader script on the HFS
boot partition so that the Open Firmware would pick it up, but aside
from that it didn't really need yaboot, although one could use the
yaboot CHRP script as a starting point.
I have to confess though that I had Debian on a Power Mac G4 (ppc32),
not a G5 (ppc64). On both of my Power Mac G5 I had trouble with the
framebuffer and the graphics drivers. One is a PowerMac 7,2 original
2002 2.0 GHz dual processor model with the original Radeon 9600 AGP
graphics card, the other one is a PowerMac11,2 late 2005 2.0 dual-core
model with the original Nvidia GeForce 6200 PCIe graphics card.
If you need someone to test, give me some hints first, because on my G4
Debian completely stopped working. I set the repositories to unstable,
but it cannot update anymore. I could, if needed, install Debian on both
G5s I have and on the G4, but I need the current installation ISO to do
that. Does this also work from USB? Because just recently found how to
boot from USB on a Power Mac, using Open Firmware...
Here's the GRUB work I did back in 2016:
1. get the grub.cfg as described here
http://cynic.cc/blog/posts/running_grub2_on_powerpc_macs/
2. and install core.elf from GRUB2 directly onto the HFS partition,
described here: https://wiki.ubuntu.com/PowerPCFAQ#Can_I_install_grub2.3F
What you need is hmount, hattrib, humount. Is that part of yaboot?And
initially means to create a HFS partition and format it, but AFAIK there
is a disk_cmds package that has Apples original mkfs.hfs or so... and
with mac-fdisk you can manage the partitioning part quite nicely (add
the 800k OpenFirmware bootstrap partition...)
What I did additionally was to take the yaboot CHRP script to add the
shiny icon that Open Firmware would display when you hold the Option key
for the boot selection screen. But that is completely optional.
Linux User #330250
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