Re: radeonfb.c flakiness

Tried that no help.  I have now figured out that the only way to make the
DFP startup properly is to zap the parameter ram (one chime's worth) and
then it will actually startup.  If I don't do that and I have been running
MacOSX then no matter what I do or try it does right after the yaboot
prompt I see a flash and then everything stays blank.

that's strange, since a friend of mine is experiencing exactly the same
issue with a Rage M6 (radeon mobility) in a titanium powerbook, while I
never see it here. The only difference is that his has a little bit slower
CPU.

Perhaps Mac OSX driver is writing something to nvram or is moving the
memory mapping for the card's interfaces.  Either way without that single
pram zap, the screen simply goes dead and stays dead.

I think it doesn't write anything but mode & backlight infos. Make sure
your problem isn't caused by the powerbook backlight code ;) I think the
way we currently fetch the backlight setting from pram is kinda broken.

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