Mine is not so old : debian jessie, with kms  and agp mode enabled. 3D
works reliably and is very stable on this powerbook G4 1,67 and radeon
9700. It's not bug free, mostly endianess problems with colors. Not all
programm using 3D work,  but  kodi does very well.
Overall, the whole interface (mate) is much more fluid than without 3D
acceleration. Without it i slow.

I didn't install latest unstable yet because this system is very stable and
enjoyable.  I did it on a powermac G5 and could'nt enable agp mode because
of a bug in the driver (already reported here). Without AGP mode, mate is
painfully slow.

Le mer. 13 mai 2020 à 16:02, Rui Salvaterra <rsalvaterra@gmail.com> a
écrit :

> On Wed, 13 May 2020 at 14:44, Christian Zigotzky <chzigotzky@xenosoft.de>
> wrote:
> >
> > OpenGL version string: 1.5 Mesa 7.6
> > OpenGL version string: 1.3 Mesa 7.2
> >
> > Screenshots:
> >
> > - http://www.supertuxkart.de/stk07ubuntu910ppc.png
> > - http://www.supertuxkart.de/opensuse111-stk073.jpg
>
> Those are *extremely old* (and I mean over ten years old) kernels and
> userspaces. Of course old UMS distros will work fine. Try installing
> the current Debian powerpc (on the G4) and ppc64 (on the G5) ports and
> force-enable AGP on the Radeon kernel driver (radeon.agpmode=0),
> you'll understand what we mean by "unstable". ;)
>
>