linux-kernel - Re: Regression: i915 blank issue on kernel 3.1.0-rc3

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Message-ID: <yun4nznmbxk.fsf@aiko.keithp.com>
Date:	Wed, 05 Oct 2011 13:16:23 -0700
From:	Keith Packard <keithp@...thp.com>
To:	Alex Davis <alex14641@...oo.com>,
	"terraluna977\@gmail.com" <terraluna977@...il.com>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	Matthew Garrett <mjg@...hat.com>
Subject: Re:  Regression: i915 blank issue on kernel 3.1.0-rc3

On Wed, 5 Oct 2011 12:59:40 -0700 (PDT), Alex Davis <alex14641@...oo.com> wrote:

> By 'disable', do you mean revert? If so, I would the like chance to submit a patch that adds a boot parameter 
> for the driver to disable the backlight by default, e.g: i915_disable_bl. Once the issues are sorted, the
> parameter could be removed.

If your machine used to work (with 3.0) and does not work with 3.1-rc,
then we need to fix the driver so that, with no configuration changes,
your machine continues to work. Preventing regressions is our primary
responsibility when changing the drivers.

Does reverting Matthew's backlight patch fix a regression on your machine?

-- 
keith.packard@...el.com

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