linux-kernel - Re: 2.6.18 suspend regression on Intel Macs

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Date:	Tue, 10 Oct 2006 12:41:28 +0200
From:	Arjan van de Ven <arjan@...radead.org>
To:	Pavel Machek <pavel@....cz>
Cc:	Frédéric Riss <frederic.riss@...il.com>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...l.org>, len.brown@...el.com
Subject: Re: 2.6.18 suspend regression on Intel Macs

On Tue, 2006-10-10 at 12:39 +0200, Pavel Machek wrote:
> Hi!
> 
> > Well, I'm not sure it qualifies as a regression, because AFAIK no
> > official kernels can s2ram/resume Intel Macs correctly out of the box.
> ...
> 
> > There has already been some discussion about the SCI_EN ACPI control bit
> > not being set when the Mactel boxes come out of suspend to ram. 
> > http://marc.theaimsgroup.com/?l=linux-acpi&m=114957637501557&w=2
> > http://marc.theaimsgroup.com/?l=linux-kernel&m=115005083610700&w=2
> > http://bugme.osdl.org/show_bug.cgi?id=6670
> > 
> > The symptom is:
> >     irq 9: nobody cared (try booting with the "irqpoll" option)
> >     Disabling IRQ #9
> > when the system comes out of sleep, making ACPI non-functional.
> > 
> > Two days after having released 2.6.17, Linus commited a fix for this
> > issue in his tree (commit 5603509137940f4cbc577281cee62110d4097b1b):
> 
> If fix was in 2.6.18-gitX, yes, that probably counts as a regression

"fix" for some value of the word.
The problem is that this is very much against the spec, and also quite
likely breaks a bunch of machines...

If we do this we probably should at least key this of some DMI
identification for the mac mini..


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