From: Mike on
I reloaded an iMac 27" with 10.5 and that's working fine except for
the brightness control. I partitioned the hard drive and loaded
10.6 in the second partition. My two questions are how to adjust
the brightness in 10.5 and how to fix the freezing issues in 10.6.

Any suggestions for these issues are appreciated.

Mike
From: Richard Maine on
Mike <mikee(a)mikee.ath.cx> wrote:

> I reloaded an iMac 27" with 10.5 and that's working fine except for
> the brightness control. I partitioned the hard drive and loaded
> 10.6 in the second partition. My two questions are how to adjust
> the brightness in 10.5 and how to fix the freezing issues in 10.6.
>
> Any suggestions for these issues are appreciated.

The 27" iMac is not supported at all in 10.5.

For that matter, it isn't supported in 10.6 either. It requires 10.6.1.

Since you don't mention what freezing issues you have in 10.6, it is
hard to say how to fix them. I don't see any freezing issues with mine;
nor have I heard of any particular tendency towards such. But then
again, iI'm running a supported version of the OS (10.6.2 at the
moment).

--
Richard Maine | Good judgment comes from experience;
email: last name at domain . net | experience comes from bad judgment.
domain: summertriangle | -- Mark Twain
From: =?ISO-8859-1?Q?Kir=E1ly?= on
Mike <mikee(a)mikee.ath.cx> wrote:
> I reloaded an iMac 27" with 10.5 and that's working fine except for
> the brightness control.

You're going to have to live with it not working. 10.5 lacks the
hardware drivers to run a 27" iMac properly. More info here:
http://support.apple.com/kb/HT2186

> how to fix the freezing issues in 10.6.

Post more info about the freezing problem.

--
K.

Lang may your lum reek.
From: Mr. Strat on
In article <him2hu$qbb$1(a)news.eternal-september.org>, Mike
<mikee(a)mikee.ath.cx> wrote:

> I reloaded an iMac 27" with 10.5 and that's working fine except for
> the brightness control. I partitioned the hard drive and loaded
> 10.6 in the second partition. My two questions are how to adjust
> the brightness in 10.5 and how to fix the freezing issues in 10.6.

There's no way you're going to load 10.5 on a new 27" iMac. It will
reject the DVD when you try to boot from it.
From: Davoud on
Mr. Strat:
> > I reloaded an iMac 27" with 10.5 and that's working fine except for
> > the brightness control. I partitioned the hard drive and loaded
> > 10.6 in the second partition. My two questions are how to adjust
> > the brightness in 10.5 and how to fix the freezing issues in 10.6.

Mike:
> There's no way you're going to load 10.5 on a new 27" iMac. It will
> reject the DVD when you try to boot from it.

Someone please help me get a handle on this. Mr. Strat says that he did
it and Mike says that he couldn't have done it.

I don't think it can be both ways. I'm neutral -- though I would be
curious to know why someone would buy the latest and greatest with an
OS that was designed for it, one which (at least on my wife's new 27")
works very well, and then partition the hard drive in order to
downgrade to two OS's that are obsolete for that machine. My WAG is
that it seemed like a good idea, or even a necessary thing, at the
time.

The following assumes, just for the moment, that Mr. Strat did what he
says he did and that Mike is incorrect in his assertion.

As for Mr. Strat's question, part 1: OS 10.5 is not fully functional
with the latest generation of iMacs because it lacks the drivers to
deal with the latest iMac hardware. Lack of the proper video driver is
the reason you can't adjust the brightness. It may be that the only fix
is for you to write new video drivers for 10.5 -- if that version of
the OS can support the features that those drivers need.

Part 2: Wipe the drive and reinstall the OS using the disks that came
with the iMac. If using the proper OS does not solve the freezing
issues, a trip to the Genius Bar is in order.

Here's what has worked for me with Macs for more than a quarter of a
century: start with Apple's recommended OS, then upgrade as recommended
by Apple. I know that this works for the overwhelming majority of Mac
users. If your Mac cannot do what you want with the Mac OS, perhaps you
need to install Windows or another OS on the Mac, or get a different
hardware set, or write your own OS, along with drivers and software to
go with it.

Davoud

--
I agree with almost everything that you have said and almost everything that
you will say in your entire life.

usenet *at* davidillig dawt cawm
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