From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Jackson Subject: Re: [r600g] ATI Radeon HD6950, dual monitor and power profile Date: Tue, 20 Dec 2011 15:20:24 -0500 Message-ID: <4EF0EE08.4070504@redhat.com> References: <4EF0D610.6020604@gmx.at> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTP id 38DDD9E8A7 for ; Tue, 20 Dec 2011 12:20:29 -0800 (PST) In-Reply-To: <4EF0D610.6020604@gmx.at> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: Harald Judt Cc: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org On 12/20/11 1:38 PM, Harald Judt wrote: > Hi, > > When using more than one monitor, the card uses higher clocks than in > single-monitor mode and low-power profile. As a subjectively negative > side-effect, the fan on the card starts making more noise. Other cards I > used before had no problem with staying quiet even when more monitors > were attached. > > As soon as I switch back to single-monitor mode, clocks go down and the > card becomes silent again. > > Is there a way to manually force lower clock speeds, and therefore reach > an acceptable noise level? Maybe make it use the same power profile > settings in dual-monitor as in single-monitor? It really depends on what kind of power profiles the device exposes. Boot with drm.debug=0x2 and they'll be in dmesg. - ajax