From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: Re: Turn off graphics Date: Sun, 4 Sep 2011 14:43:01 +0100 Message-ID: <20110904134301.GA6255@srcf.ucam.org> References: <4E637A01.1000502@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from cavan.codon.org.uk ([93.93.128.6]:59260 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753833Ab1IDNnF (ORCPT ); Sun, 4 Sep 2011 09:43:05 -0400 Content-Disposition: inline In-Reply-To: <4E637A01.1000502@gmail.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Shaw Xiao Cc: linux-acpi@vger.kernel.org There's no generic ACPI mechanism for this. Some machines with dual GPUs have ACPI methods for turning the discrete controller on and off, but in general you'd be looking at doing this from the GPU driver. -- Matthew Garrett | mjg59@srcf.ucam.org