16.04 PPC - cannot determine correct yaboot.conf append

**4b11b4** · October 9th, 2018

Hello to all of you out there...

I have a A1106 PowerBook G4.
Specs:
https://everymac.com/systems/apple/p..._1.5_15_2.html

I have successfully installed Lubuntu 16.04 PPC and can successfully boot, but I can't seem to find the right settings for the yaboot.conf, append="" option.

When at the yaboot startup prompt...

Code:

boot: Linux  radeon.modeset=1 video=offb:off video=1024x768-32 video=radeonfb:off radeon.agpmode=-1

prevents the system from freezing.
(thanks to rican-linux: https://ubuntuforums.org/showthread.php?t=2274369)

Interestingly enough, this also works... (without the video=1024x768-32)

Code:

boot: Linux radeon.modeset=1 video=offb:off video=radeonfb:off radeon.agpmode=-1

(thanks to rican-linux again: https://ubuntuforums.org/showthread.php?t=2289495)

So... either of those allow me to boot without the freezes.
However, I edited the file at yaboot.conf to have both of those options..
i.e.

Code:

image=/vmlinux
    label=Linux
    read-only
    initrd=/initrd.img
    append="quiet splash radeon.modeset=1 video=offb:off video=1024x768-32 video=radeonfb:off radeon.agpmode=-1"

image=/vmlinux.old
    label=old
    read-only
    initrd=/initrd.img.old
    append="quiet splash radeon.modeset=1 video=offb:off video=1024x768-32 video=radeonfb:off radeon.agpmode=-1"

but this doesn't seem to work. I freeze quickly after seeing the Lubuntu login GUI.

I tried removing the "quiet splash " but that didn't help.
I also tried it as simply:

Code:

image=/vmlinux
    label=Linux
    read-only
    initrd=/initrd.img
    append="quiet splash radeon.agpmode=-1"

image=/vmlinux.old
    label=old
    read-only
    initrd=/initrd.img.old
    append="quiet splash radeon.agpmode=-1"

as recommended in this thread (https://ubuntuforums.org/showthread.php?t=2335754).

(Side note: The mac seems to go to sleep very quickly and I often end up hitting the power button to wake up in order to login)