Date: Thu, 22 Sep 2011 21:26:08 -0400 From: Justin Hibbits <chmeeedalf@gmail.com> To: Miod Vallat <miod@online.fr> Cc: freebsd-ppc@freebsd.org Subject: Re: ofw syscons brightness patch Message-ID: <60817CE0-A4FE-44A1-A463-99BCD87AF99F@gmail.com> In-Reply-To: <j5g8lu$hcp$1@dough.gmane.org> References: <91CC14C1-14F2-41B3-81F1-D90B42F038CA@alumni.cwru.edu> <4E7AAA9D.9010503@freebsd.org> <F6ABF05F-795A-49A6-A13D-8D2C496F978F@alumni.cwru.edu> <j5g8lu$hcp$1@dough.gmane.org>
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On Sep 22, 2011, at 5:17 PM, Miod Vallat wrote: >> + /* Scale by 17, so it's a range of 0-12. Also, from OpenBSD's >> source, >> + * 0x34 is the minimum brightness allowed before the backlight >> shuts off. > > I wrote that code long ago. It was tested on an early iBook G3, and > found out to not work (i.e. the OFW method does nothing or does not > exist) on most of the TiBook and recent iBook of the 2002-2005 years. > > I have no idea if more recent models behave any better, but in any > case > do not expect this to work on all systems. > > Miod It works quite well on my 1GHz TiBook, which was the purpose of writing this in the first place. I would like others to test it on other hardware. - Justin
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