PowerMac G4 graphics issue

[Alexey Dokuchaev]

On Sat, Mar 29, 2014 at 10:51:52AM +0000, Alexey Dokuchaev wrote:
> I'm still not quite there [to working X11 on Mac mini G4] yet, seeing these
> infamous lines in the /var/log/Xorg.0.log:
> 
>   [347050.379] (WW) xf86EnableIO 7
>   [347050.379] (II) xf86EnableIO: ffffffff
>   [347050.379] (WW) Can't map IO space!
>   [347050.379] (EE) No devices detected.
> 
> Advice about setting sysctl hw.ofwfb.relax_mmap=1 is not helpful since I
> do not have this sysctl node.  Any clues?

Looks like `relax_mmap' is defined in powerpc/ofw/ofw_syscons.c, but I've
removed "device sc" from kernel config in favor of "device vt".  Does it
mean that X11 + ATI card + Newcons is not supported yet?  Can it be easily
fixed, or I have to go back to syscons(4) for now?  Thanks,

./danfe