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Hello,

On Sep 16, 2006, at 17:37, Joachim Thiemann wrote:

> However, still one issue on my hardware, not sure it they're due to my
> configuration: I can't start X (XFree86).  In the log the message
> (after all the usual XFree86 stuff) is:
>
> Fatal server error:
> xf86MapVidMem: could not mmap screen [s=20000, a=a0000] (Invalid 
> argument)
>
> The kernel securelevel is -1, if that makes a difference.  Stock
> kernel off the 3.1_RC2 cd. ATI Rage 128 card.

That's a stupid XFree driver trying the legacy VGA framebuffer. There's 
a workaround in -current which simply hands processes doing this the 
first 128kB of the framebuffer when 'option OFB_FAKE_VGA_FB' is in the 
kernel config.
Fixing this in XFree's r128 driver should be trivial ( just #ifdef all 
references to the vgahw module, like in radeon and mach64 ) but I don't 
have the hardware to test it. The vgahw module is only used to save and 
restore VGA textmode information which is patently useless on a mac.

have fun
Michael
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