linux-kernel - Re: 2.6.21-mm2: ACPI exception on resume

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Message-ID: <20070523014825.GX11115@waste.org>
Date:	Tue, 22 May 2007 20:48:25 -0500
From:	Matt Mackall <mpm@...enic.com>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: 2.6.21-mm2: ACPI exception on resume

On Tue, May 22, 2007 at 09:19:43PM -0300, Henrique de Moraes Holschuh wrote:
> On Tue, 22 May 2007, Matt Mackall wrote:
> > On Mon, May 21, 2007 at 08:03:49PM -0300, Henrique de Moraes Holschuh wrote:
> > > On Mon, 21 May 2007, Matt Mackall wrote:
> > > > BIOS Information
> > > >         Vendor: IBM
> > > >         Version: 1RETDHWW (3.13 )
> > > >         Release Date: 10/29/2004
> > > > 
> > > > No sign of any EC version in the output.
> > > 
> > > This is a buggy, ancient version of the BIOS, which probably means you have
> > > an old and slightly buggy EC firmware.  I recommend you to upgrade to BIOS
> > > 3.21 and EC 3.04.  See http://thinkwiki.org/wiki/BIOS_Upgrade for more
> > > details.
> > 
> > Really, I'd much prefer my kernel not regress instead. Updating
> > firmware is just introducing more potential instability and ignoring
> > the problem.
> 
> We can't very much know if the kernel is really buggy, then.

Whether the 'bug' is in the firmware or the kernel, it is the kernel
that has regressed. Suspend worked fine for 2+ years before this.

Breaking working systems, either software or hardware, is a bad idea.
I shouldn't have to upgrade my BIOS to work with a new kernel any more
than I should have to upgrade my browser.

-- 
Mathematics is the supreme nostalgia of our time.
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