linux-kernel - Re: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green.

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Date:	Wed, 20 Feb 2008 14:32:13 -0800
From:	Jesse Barnes <jesse.barnes@...el.com>
To:	"Jeff Chua" <jeff.chua.linux@...il.com>
Cc:	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>,
	"Dave Airlie" <airlied@...ux.ie>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-acpi@...r.kernel.org,
	"suspend-devel List" <suspend-devel@...ts.sourceforge.net>,
	"Greg KH" <gregkh@...e.de>
Subject: Re: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green.

On Wednesday, February 20, 2008 11:10 am Jeff Chua wrote:
> On Feb 21, 2008 2:53 AM, Jesse Barnes <jesse.barnes@...el.com> wrote:
> > > So, next I'll try "shutdown" to see if it work. I was using "platform".
> >
> > Ok, that would be good to try.
>
> "shutdown" does power down properly. But still green on resume.
>
> > Looks like the AR registers are hosed, which is what I thought I fixed...
> >  Can you attach your i915_drv.c file just so I can sanity check it?
>
> Attached.

Jeff, for the hang on suspend problem, I know suspect something else in 
2.6.25-rc2 caused that.

Can you try the 2.6.25-rc1 version of i915_drv.c (in fact all of 
drivers/char/drm from 2.6.25-rc1) but in a 2.6.25-rc2 kernel?  I ask because 
2.6.25-rc1 suspends to disk just fine for me and resumes w/o a green screen, 
while 2.6.25-rc2 fails to suspend (hangs like you say) and gives me a green 
screen.

Were there other changes in ACPI or the PM core that might have caused this I 
wonder?

Thanks,
Jesse
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