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Date: Wed, 15 Oct 2008 06:42:03 -0600
From: Peter Grehan <grehan@freebsd.org>
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Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>
Subject: Re: [Fwd: X hassles - "Device not found"]
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Hi Horst,

> (WW) xf86EnableIO 5
> (II) xf86EnableIO: ffffffff
> (WW) Can't map IO space!

  Try a 'sysctl hw.ofwfb.relax_mmap=1' before starting X. The Xorg ATI 
driver attempts to mmap more memory than the card reports, and the OFW 
syscons driver thinks this is an error.

  However, since X hasn't fixed this in years now, it's probably time to 
remove the check since every user trips up on it :(

later,

Peter.