From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Wu <peter@lekensteyn.nl>
Subject: Re: Kernel Freeze with American Megatrends BIOS
Date: Tue, 30 Aug 2016 21:53:37 +0200
Message-ID: <20160830195337.GA18805@al>
References: <004c7dbe-2014-c691-29d1-7a45f3b73dfa@desertbit.com>
 <20160829160210.GA24451@localhost>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
Content-Disposition: inline
In-Reply-To: <20160829160210.GA24451@localhost>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Bjorn Helgaas <helgaas@kernel.org>
Cc: linux-pci@vger.kernel.org, Roland Singer <roland.singer@desertbit.com>, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-acpi@vger.kernel.org
List-Id: linux-acpi@vger.kernel.org
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