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Not quite ready for prime time
I can attest that on a PowerBook Lombard G3 400 no ATI driver is loaded under 10.1.5, as shown via "sudo kmodstat". This explains why, after updating to 10.1.5, having immediately dl'd one of the largest res Episode II trailers from the Quicktime site ("Clone Wars" trailer) I still noticed significant frame dropping and stuttering when shown at normal size, thousands of colors. It ran ok at .5 size though.
After making the modifications Luis outlines above, I can report 3 things: 1)The driver does load after the mod (checked via kmodstat) 2) The highest res episode 2 Trailers now play flawlessly, at normal size in thousands of colors and 3) The highest res episode 2 Trailers also now play flawlessly at normal size in millions of colors. I don't have the dev tools installed on that machine so I didn't have access to QuartzDebug etc. last night for additional testing. But there is an appreciable and quantifiable performance increase wrt Quicktime at any rate. However, this performance does not come without a price. The screen seems to have taken on a speckled appearance (kind of like dithering artifacts, not horrible but there) in both thousands and millions of colors, and when switching between the two settings the screen goes black and does not recover without a forced restart. The machine then comes back up in the selected resolution. Because of these consequences I will probably go in this weekend and undo the changes I made to ATIRagePro.kext, returning my venerable Lombard to a video-unaccelerated state. |
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