Below is my yaboot.conf file which contains the parameters and my comments. Most of my
problems have to do with the fact that I have a Radeon card:
0000:00:10.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV350/M10
[Mobility Radeon 9600 PRO Turbo]
bill@powerbook:~$ cat /etc/yaboot.conf
## yaboot.conf generated by the Ubuntu installer
##
## run: "man yaboot.conf" for details. Do not make changes until you have!!
## see also: /usr/share/doc/yaboot/examples for example configurations.
##
## For a dual-boot menu, add one or more of:
## bsd=/dev/hdaX, macos=/dev/hdaY, macosx=/dev/hdaZ
boot="/dev/disk/by-id/ata-FUJITSU_MHT2080AT_NN4CT4718GM5-part2"
device=/pci@f4000000/ata-6@d/@0
partition=3
root="UUID=1a7f3c8f-1907-4349-81c9-538cef6fbd16"
timeout=50
install=/usr/lib/yaboot/yaboot
magicboot=/usr/lib/yaboot/ofboot
enablecdboot
# radeonfb is the old driver. It works but it cannot do hardware
# accelleration. It must be turned off if the new radeon driver is to be
# turned on. The latest versions of the new radeon driver require that KMS
# is turned on with radeon.modeset=1. This causes crashes/hangs unless
# AGP mode is turned down or off. I'm turning it off with radeon.agpmode=-1,
# even though my card is mode 4.
#
# Setting radeon.agpmode=-1 is a necessary workaround according to the
# Ubuntu PPC FAQ and the Fedora 16 PPC page.
#
# Sometimes you get a blank screen but it is just because the brightness
# got set to zero. Turn up the brightness (screen backlight) to fix it: Fn-F?.
#
# This also requires 16-bit color. OpenGL fails in 32/24-bit color. See the
# /etc/X11/xorg.conf file.
image=/boot/vmlinux
label=testing
read-only
initrd=/boot/initrd.img
append="quiet splash video=radeonfb:off video=radeon:1280x854-32@60 radeon.modeset=1
radeon.agpmode=-1"
# This is the default config for Lubuntu, which works, but without hardware
# accelleration. It uses the old radeonfb kernel driver.
image=/boot/vmlinux
label=Linux
read-only
initrd=/boot/initrd.img
append="quiet splash video=radeonfb:1280x854-32@60 nomodeset"
image=/boot/vmlinux.old
label=old
read-only
initrd=/boot/initrd.img.old
append="quiet splash video=radeonfb:1280x854-32@60 nomodeset"
# I thought this setup failed, but it might have worked. It resulted in a
# blank screen, but that may have been because the brightness automatically
# got set to zero. This happens in my above working configuration too.
image=/boot/vmlinux
label=failed
read-only
initrd=/boot/initrd.img
append="quiet splash radeon.modeset=1 video=offb:off video=radeonfb:off
video=1280x854-32@60 radeon.agpmode=-1"
bill@powerbook:~$ cat /etc/X11/xorg.conf
Section "Device"
Identifier "Card0"
Driver "radeon"
Option "AccelMethod" "EXA"
Option "AccelDFS" "off"
# Reducing AGPMode helps stop hangs/crashes. My card is a 4 but 1 works better.
Option "AGPMode" "1"
Option "AGPFastWrite" "1"
EndSection
Section "Screen"
Identifier "Screen0"
# With this I'm attempting to avoid glxinfo from failing to load r300.
DefaultDepth 16
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
EndSection
--------------------------------------------
On Fri, 10/3/14, Al Dunsmuir <al.dunsmuir(a)sympatico.ca> wrote:
Subject: Re: Mac PowerBook G4
To: "Bill Chatfield" <bill_chatfield(a)yahoo.com>
Cc: "Dan Horák" <dan(a)danny.cz>, ppc(a)lists.fedoraproject.org
Date: Friday, October 3, 2014, 7:12 PM
On Friday, October 3,
2014, 1:51:37 PM, Bill Chatfield wrote:
Thanks for the info Dan and Al.
Right, I'm interested in ppc32 from a
hobbyist
perspective. Red
Hat/CentOS
would be for production. The difference between
running
MacOS X and Linux on this machine is like
night and day, with
Linux
being the
"day". I think the effort to make things
work on
older
hardware forces one to think more
about efficiency versus
waste,
which is
a good thing to consider.
Aside from my G5s, I have a number of
G4 and G3 Macs (plus two IBM
7046-B50
CHRP 32-bit machines currently running AIX 5.1). I've
got a
number of different video cards for
the PowerMacs, as that (older ATI
on Intel)
is what drew me into the Macs in the first place.
The only one that
has cost that much is the G5 Quad, but that's
because I've added a 4TB drive and am
maxing out the RAM (16 GB when
I'm done)
so it will be a useful Koji builder for ppc64 and ppc32.
I have a Fedora 17 PPC
install disk. And now I know, by
experimenting with Lubuntu PPC, which kernel parameters are
required
to get X to start up on my
machine, so I can probably start
with
Fedora 17. But, it looks like I'll need to upgrade
through to F20.
It
would be helpful should you find a spare moment
if you could
briefly post your notes (or
useful URLs) with those kernel parameters.
Al
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