From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Ornati <ornati@gmail.com>
Subject: Re: [Intel-gfx] Interrupt latency on some 945GM platforms
Date: Tue, 21 Sep 2010 20:26:07 +0200
Message-ID: <20100921202607.2b46ffca@gmail.com>
References: <201009132336.17310.anarsoul@gmail.com>
	<201009171002.09187.simon.farnsworth@onelan.co.uk>
	<4b4d1e0a-b1ad-40f1-a829-6d4726d2b2d3@email.android.com>
	<201009171550.48480.anarsoul@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <201009171550.48480.anarsoul@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
To: Vasily Khoruzhick <anarsoul@gmail.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>, Simon Farnsworth <simon.farnsworth@onelan.co.uk>, intel-gfx@lists.freedesktop.org, Sitsofe Wheeler <sitsofe@yahoo.com>, Venkatesh Pallipadi <venki@google.com>, Thomas Gleixner <tglx@linutronix.de>, linux-kernel@vger.kernel.org
List-Id: intel-gfx@lists.freedesktop.org

On Fri, 17 Sep 2010 15:50:43 +0300
Vasily Khoruzhick <anarsoul@gmail.com> wrote:

> > Vasily, can you try the qos workaround on your machine and see if it works
> > too?
> > 
> > Thanks,  
> 
> Just give me a patch :)

Me too...

I've a laptop with 945GM (Asus x5dij) and with 2.6.32+ kernels I'm
having random, but not frequent, screen flickering problems (for some
reasons 2.6.31 works fine).

Problem goes away with "nohz=off".

I'll try with "processor.max_cstate=?" and see if that works too.

Bye,

-- 
	Paolo Ornati
	Linux 2.6.35.4 on x86_64