From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,PDS_BTC_ID,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8F061C43603 for ; Thu, 5 Dec 2019 10:37:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6BB4724654 for ; Thu, 5 Dec 2019 10:37:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729048AbfLEKhN (ORCPT ); Thu, 5 Dec 2019 05:37:13 -0500 Received: from metis.ext.pengutronix.de ([85.220.165.71]:37347 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726384AbfLEKhM (ORCPT ); Thu, 5 Dec 2019 05:37:12 -0500 Received: from kresse.hi.pengutronix.de ([2001:67c:670:100:1d::2a]) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1icoVT-0001Rs-6X; Thu, 05 Dec 2019 11:37:11 +0100 Message-ID: <475aa5cfd3d3ccac5b2c76ba031bf925db09a917.camel@pengutronix.de> Subject: Re: baseline power consumtion kernel > 5.3.10 From: Lucas Stach To: Guido Riedel , linux-pm@vger.kernel.org Cc: "Rafael J. Wysocki" , dri-devel@lists.freedesktop.org Date: Thu, 05 Dec 2019 11:37:10 +0100 In-Reply-To: <3ebca53c-b8fa-1e7f-6d4e-abdc93cbf2a6@web.de> References: <3ebca53c-b8fa-1e7f-6d4e-abdc93cbf2a6@web.de> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.30.5-1.1 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::2a X-SA-Exim-Mail-From: l.stach@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-pm@vger.kernel.org Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On Do, 2019-12-05 at 08:52 +0100, Guido Riedel wrote: > Hi, > > Since Kernel 5.3.11 I got a significant increased baseline Power > consumption. I tried up to 5.4.1 on arch linux. Powertop shows an > increase from 3.6W on 5.3.10 to 5.x W on higher Kernels. My laptop fan > spins a lot more. > > I read that a lot of Intel stuff has entered the Kernel in 5.3.11, could > this cause it? Will it stay like this in the next Versions? Can I maybe > switch something off etc. to get a lower baseline power? > > I hope I write to the right address, otherwise sorry. 7e34f4e4aad3 ("drm/i915/gen8+: Add RC6 CTX corruption WA"), which has been backported to 5.3.11 causes a major power regression due to Intel GPUs not being able to enter rc6 anymore. Fixes for this are -next, but I don't know what the plans for landing and maybe backporting are. Regards, Lucas