Kernel config help for powerbook 12"

ppctop · n00b Joined: 15 Apr 2014 Posts: 3

Hi, I've been trying to get this darn kernel working (using the 3.10.25 from gentoo-sources) for a few days now, but am having a few issues I need some help with...
The hardware in question is http://www.everymac.com/systems/apple/powerbook_g4/specs/powerbook_g4_1.5_12.html (sorry for external link)

1. I'm having great difficulty in getting audio to work.. I know that snd-aoa works with this model laptop (evidenced by working on lubuntu), and that it uses snd-aoa-codec-tas, snd-aoa-fabric-layout, snd-aoa-i2sbus, snd-aoa-soundbus, and snd-aoa modules, but these don't get reeled in on boot, and manually loading them just shows the "SoundByLayout" device in alsamixer with no controls.

2. I can't find any trace of pmu_battery... probably I'm just stupid

3. Is there any particular trick to setting up nouveau? Is it as simple as enable it in the kernel, and go, or is there need for other things like nvidia fb support in the kernel?

Any information you need extra, don't hesitate to ask.

ppctop · n00b Joined: 15 Apr 2014 Posts: 3

Ok, I managed ot make a bit of progress...

With the alsa issues, removing snd-powermac entirely from the kernel build and building snd-aoa and co into the kernel solved that, sound for all now with the appropriate controls in alsamixer!

pmu_battery was called... battery_pmu in the config... go figure.

I figured out how to get nouveau kind of rolling too, I had to get rid of a bunch of crufty framebuffer drivers that were included for some reason, and that caused the /dev/dri to finally spawn and X to become usable. However there's absolutely no opengl support in the slightest. Even swrast doesn't work, with:

libGL: driver does not expose __driDriverGetExtensions_nouveau(): /usr/lib/dri/nouveau_dri.so: undefined symbol: __driDriverGetExtensions_nouveau
libGL error: failed to load driver: nouveau

The same for swrast, just swap nouveau out for it for the error...

ppctop · n00b Joined: 15 Apr 2014 Posts: 3

Just checking in, I never did get nouveau_dri.so to work, and it still beats me as to why.

A good thing though, is that renaming it, so it's not discovered anymore, and restarting X gets swrast working! Which turned out to be plenty fast...ish... Oh well, better than nothing...

I wonder if the old UMS stuff would work as intended, but that's a fight for another day.

khayyam · Posted: Tue Jun 17, 2014 9:28 pm Post subject:

ppctop ... I use to have a powerbook/pismo (G3) and so I'm more familiar with r128 (ATI), however, I did sometime back create an install image for G4 powerbooks (about 120 machines in total) and as I remember it was AGP_NVIDIA that was used.

HTH & best ... khay