linux-kernel - Re: 2.6.25-rc6 regression - hang on resume [Bug 10319]

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Message-ID: <b637ec0b0804080552i1a6b5ddg5bbba0324da4e14e@mail.gmail.com>
Date:	Tue, 8 Apr 2008 14:52:38 +0200
From:	"Fabio Comolli" <fabio.comolli@...il.com>
To:	"Soeren Sonnenburg" <kernel@....de>
Cc:	"Romano Giannetti" <romanol@...omillas.es>,
	"Tino Keitel" <tino.keitel@....de>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	bugme-daemon@...zilla.kernel.org,
	"Jesse Barnes" <jesse.barnes@...el.com>,
	suspend-devel@...ts.sourceforge.net
Subject: Re: 2.6.25-rc6 regression - hang on resume [Bug 10319]

On Tue, Apr 8, 2008 at 2:39 PM, Soeren Sonnenburg <kernel@....de> wrote:
> On Tue, 2008-04-08 at 14:35 +0200, Romano Giannetti wrote:
>  >
>  > On Tue, 2008-04-08 at 10:58 +0200, Tino Keitel wrote:
>  > > With 2.6.25-rc, the text console is fine after resume, due to the
>  > > recent changes to the Intel i915 DRM driver. Maybe those people who
>  > > used to use vbetool prior to 2.6.25 should check if this is still
>  > > needed.
>  >
>  > Yep, the problem is just that: in 2.6.24 vbetool hacks (in my case,
>  > using s2ram -p -m options) was needed to resume graphics. Now they are
>  > not needed anymore, and using them _break_ resume.
>  >
>  > So, people with a working suspend-to-ram setup (even using the whitelist
>  > in s2ram, I mean, simply calling s2ram) will discover that 2.6.25 break
>  > their machine. Removing the s2ram package and suspending with
>  > kernel-only machinery will work, but... well, it's not user-friendly.
>
>  The above holds only if you have an intel graphics adapter. For me
>  (radeon) it really breaks (as in echo mem >/sys/power/state leaves me a
>  black screen on resume and manually typing vbetool post or vbetool
>  vgamode simply hangs the machine).
>

For me (radeon X700) using binary fglrx xorg driver without the binary
kernel module (which does not compile under .25rc for me)
resume-from-ram works using s2ram.

Lightly tested with -rc8.

My laptop is in whitelist as VBE_POST|VBE_SAVE|NOFB .

>  Soeren

Fabio
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