Bug#550662: Also on Mac mini / PowerPC

[stef louise]

Hi,

I am a mostly happy owner of (among others) a last model of the Mac Mini -
PowerPC edition. These beasts came with a G4 MPC 7447a at 1.5GHz and a AGP
Radeon 7250 (R280).
I experienced the bug about the same time as Jean-Luc, it got better a
little while, but really soon it was deadly again : no more accelerated
OpenGL possible.

With the last update, things got slightly better: at least the glxgear test
doesn't kill the system anymore. That's not to say that it works either: the
gears became a bunch of tiny triangles appearing randomly in the window. But
it may be only a endianess issue. I am not sure.

Of course any real OpenGL application will continue to succeed in freezing
the system hard (e.g. any 3D game like NexUIz).

I am also clueless about the source of the bug. I tend to remember like
Jean-Luc that it was an X/mesa update that triggered the bug. No certainty
nonetheless.
Also as I read the thread it seems to be a bit tricky between the
interaction of the firmware loader, the DRM layer of the kernel, DRI and
maybe mesa and X.
AFAIK, composing doesn't work either, and I heard some people experiencing
some hard freeze also with radeon based mac with Debian testing.

Let me know if I can help.

Thanks for your attention and for your work.
Stéphane
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