linux-kernel - Re: [stable] Suspend regression in stable kernel 2.6.27.4 on Mac mini Core Duo

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Message-ID: <20081110233014.GA5163@dose.home.local>
Date:	Tue, 11 Nov 2008 00:30:15 +0100
From:	Tino Keitel <tino.keitel@....de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Subject: Re: [stable] Suspend regression in stable kernel 2.6.27.4 on Mac
	mini Core Duo

On Sun, Nov 09, 2008 at 21:51:57 +0100, Rafael J. Wysocki wrote:
> On Sunday, 9 of November 2008, Greg KH wrote:
> > On Sun, Nov 09, 2008 at 09:28:30PM +0100, Tino Keitel wrote:
> > > Hi,
> > > 
> > > my Mac mini Core Duo doesn't wake up from suspend to RAM anymore with
> > > 2.6.27.4. It works with 2.6.27.3. I enabled pm_trace, but dmesg | grep
> > > "hash matches" didn't show anything after resume. I tried 2.6.27.5,
> > > which also failed to resume.
> > > 
> > > The system is i386, the hardware is basically Intel based: Core Duo
> > > T2300 CPU, Intel graphics i945, ICH7, Marvell GbE (sky2), a SATA hard
> > > disk, PATA DVD drive, a Firewire hard disk, and a lot of USB devices.
> > > 
> > > Does that ring any bells? Any hints what commit I should try to revert?
> > 
> > Can you run 'git bisect' on the patches in 2.6.27.4 to see which one
> > broke your box?
> 
> I would start from these commits:
> 
> 3b987ac961486373f91191b14291b331fa546072
> "ACPI suspend: Always use the 32-bit waking vector"
> 
> 66036f5862883fcc9f7ff8550685a5a3de1a57e4
> "ACPI Suspend: Enable ACPI during resume if SCI_EN is not set"

Thanks Rafael, 2.6.27.5 with 66036f5862883fcc9f7ff8550685a5a3de1a57e4
reverted resumes fine.

Regards,
Tino
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