Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753602Ab0FGWmV (ORCPT ); Mon, 7 Jun 2010 18:42:21 -0400 Received: from mx1.redhat.com ([209.132.183.28]:30592 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753245Ab0FGWmU (ORCPT ); Mon, 7 Jun 2010 18:42:20 -0400 Subject: Re: [Regression, post-rc1] Multiple issues after enabling SetVoltage on rs780m From: Dave Airlie To: "Rafael J. Wysocki" Cc: Alex Deucher , Dave Airlie , LKML , Linus Torvalds , Andrew Morton , dri-devel@lists.sourceforge.net In-Reply-To: <201006072337.17778.rjw@sisk.pl> References: <201006071129.32159.rjw@sisk.pl> <201006072337.17778.rjw@sisk.pl> Content-Type: text/plain; charset="UTF-8" Date: Tue, 08 Jun 2010 08:37:18 +1000 Message-ID: <1275950238.3125.0.camel@clockmaker-el6> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2221 Lines: 52 On Mon, 2010-06-07 at 23:37 +0200, Rafael J. Wysocki wrote: > On Monday 07 June 2010, Alex Deucher wrote: > > On Mon, Jun 7, 2010 at 6:15 AM, Dave Airlie wrote: > > > On Mon, Jun 7, 2010 at 7:29 PM, Rafael J. Wysocki wrote: > > >> Hi Alex, > > >> > > >> Your commit 9349d5cc920c10845693f906ebd67f394f1d0d04 > > >> (drm/radeon/kms/pm: enable SetVoltage on r7xx/evergreen) has caused my test-bed > > >> Acer Ferrari One to behave quite unreliably. The symptoms are: > > >> > > >> - the system hangs hard (~ 50% of the time) when starting Xorg > > >> - the system hangs hard (~ 50% of the time) when stopping Xorg during system > > >> reboot > > >> - the system sometimes hangs hard during suspend to RAM > > >> > > >> These problems are not reproducible with the commit above reverted. > > >> > > >> Below is the information about the graphics adapter from lspci. > > > > > > Reverting that commit on master fixes it? > > > > > > that commit touches code paths in rv770 and evergreen that in no way > > > should affect that chipset which is an rs780, so takes the r600 paths. > > > > > > are you sure its not 7ac9aa5a1f1b87adb69bcbec2b89e228f074103a? > > > > It should be that commit if it is indeed the voltage adjust. That > > said, I just took a closer look at the voltage adjust on newer IGPs > > and unfortunately, it doesn't work the same as the discrete cards, so > > for now we should disable it. The attached patch should do the trick. > > There weren't any problems on my IGP chips, but they don't have a > > SetVoltage table, so nothing is touching the hw. > > I'm not sure if the adapter is a discrete one. > > Anyway, my testing was done before commit > 386f40c86d6c8d5b717ef20620af1a750d0dacb4 and I'm unable to reproduce the > problems with current -git, so they might be a fallout of the bug fixed by that > commit. > Yeah the sounded a lot more like the vt.c crapfest, since it was when starting/stopping X. Dave. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/