From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Keith Packard <keithp@keithp.com>
Cc: linux-kernel@vger.kernel.org, Bdale Garbee <bdale@gag.com>
Subject: Re: [PATCH] acpi/video: Don't restore backlight to 0 at boot time
Date: Thu, 24 May 2012 14:24:43 +0100 [thread overview]
Message-ID: <20120524132443.GA21231@srcf.ucam.org> (raw)
In-Reply-To: <86ehqajbkr.fsf@sumi.keithp.com>
On Thu, May 24, 2012 at 12:13:40AM -0700, Keith Packard wrote:
> Matthew Garrett <mjg59@srcf.ucam.org> writes:
>
> > ACPI arguably does define 0 as being off (this is exceedingly poorly
> > defined), but I'm not entirely happy with this - the firmware makes its
> > behaviour conditional on the OS version. I'd really like to see an
> > updated version of the Intel opregion spec to get a better idea of what
> > we're meant to be doing here, but the last one made public was
> > ancient.
>
> Kernel 3.4 continues to break on this machine; I'd love to know how to
> get a suitable fix upstreamed...
Still waiting for that spec.
--
Matthew Garrett | mjg59@srcf.ucam.org
prev parent reply other threads:[~2012-05-24 13:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-31 8:52 [PATCH] acpi/video: Don't restore backlight to 0 at boot time Keith Packard
2012-01-03 22:19 ` Matthew Garrett
2012-05-24 7:13 ` Keith Packard
2012-05-24 13:24 ` Matthew Garrett [this message]
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