linux-kernel - Re: [PATCH] i915: slow acpi_lid

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Date:	Thu, 04 Feb 2010 07:43:12 -0800
From:	Eric Anholt <eric@...olt.net>
To:	Thomas Meyer <thomas@...3r.de>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [PATCH] i915: slow acpi_lid_open() causes flickering

On Mon, 01 Feb 2010 19:20:53 +0100, Thomas Meyer <thomas@...3r.de> wrote:
> acpi_lid_open() could take up to 10ms on my computer.
> Some component is calling the drm GETCONNECTOR ioctl many times in a row.
> This results in flickering (for example, when starting a video).
> Fix it by assuming an always connected lid status.
> 
> This fixes bug http://bugzilla.kernel.org/show_bug.cgi?id=14670

If it's that unusable, this should just be put in bad_lid_status and
bad_lid_status checked before asking ACPI.

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