https://bugs.freedesktop.org/show_bug.cgi?id=95017

--- Comment #10 from Rui Salvaterra rsalvaterra@gmail.com --- (In reply to Michel Dänzer from comment #4)

(In reply to Mathieu Malaterre from comment #3)

...

If AGP is simply not supported on PowerPC, it would be nice to have a clearer message (or at least a warning).

It is supported, it's just unstable on many PowerMacs.

A patch disabling AGP by default on PowerMacs or even PPC in general probably wouldn't be rejected. :)

Hi, Michel

I don't understand. I know about the coherency issues on some UniNorth bridges (DMA writes through the GART going directly to RAM, IIRC), but how did OS X cope with them? Did it also disable AGP transfers? If not, what can be done to fix this bug for real, instead of working around it? (I have a very vague memory that these hangs didn't happen before KMS, but I may be completely wrong.) Also, on a somewhat related note, there are still issues with the Radeon (R600, not SI) DRM on big endian, as for https://bugs.freedesktop.org/show_bug.cgi?id=95015.

Thanks,

Rui