From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Barnes Subject: Re: Intel i915 freeze on latest git Date: Wed, 9 Feb 2011 09:59:24 -0800 Message-ID: <20110209095924.2840b960@jbarnes-desktop> References: <20110201112200.GA2349@fujiko> <1bdc18$jeuv05@fmsmga002.fm.intel.com> <20110201122943.GA2011@fujiko> <20110201140754.GA2229@fujiko> <20110201083112.3cfefc3a@jbarnes-desktop> <20110202095656.GA2202@fujiko> <1bdc18$jfb1or@fmsmga002.fm.intel.com> <20110209125238.GA2221@fujiko> <1bdc18$jhlg3k@fmsmga002.fm.intel.com> <20110209095047.506b4372@jbarnes-desktop> <20110209095326.3c5e1380@jbarnes-desktop> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from oproxy1-pub.bluehost.com (oproxy1-pub.bluehost.com [66.147.249.253]) by gabe.freedesktop.org (Postfix) with SMTP id DA1E99E710 for ; Wed, 9 Feb 2011 09:59:26 -0800 (PST) In-Reply-To: <20110209095326.3c5e1380@jbarnes-desktop> 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 Cc: Francesco Allertsen , dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org On Wed, 9 Feb 2011 09:53:26 -0800 Jesse Barnes wrote: > On Wed, 9 Feb 2011 09:50:47 -0800 > Jesse Barnes wrote: > > > On Wed, 09 Feb 2011 17:09:10 +0000 > > Chris Wilson wrote: > > > > > On Wed, 9 Feb 2011 13:52:38 +0100, Francesco Allertsen wrote: > > > > On Wed, Feb 02, 2011 at 09:59:54AM +0000, Chris Wilson wrote: > > > > > Hmm, that was the only change I could spot between the two patches. Care > > > > > to disable that function and see what happens? [i.e. put a return before > > > > > we write anything to the ring] > > > > > > > > Ping? > > > > > > I was optimistic that we might spot the real issue... However, you appear > > > to be not alone and so I've pushed a disabling patch onto -fixes: > > > > > > commit ac66808814036b4c33dd98091b2176ae6157f1a8 > > > Author: Chris Wilson > > > Date: Wed Feb 9 16:15:32 2011 +0000 > > > > > > drm/i915: Disable RC6 on Ironlake > > > > > > The automatic powersaving feature is once again causing havoc, with 100% > > > reliable hangs on boot and resume on affected machines. > > > > > > Reported-by: Francesco Allertsen > > > Reported-by: Gui Rui > > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=28582 > > > Signed-off-by: Chris Wilson > > > > > > That should work its way upstream shortly. > > > > reverting the cleanup wasn't sufficient? > > > > Francesco, if you revert the cleanup patch you bisected to, what > > does /sys/kernel/debug/dri/0/i915_drpc_info report? > > In particular, I'm curious if it reports that you're in RC6, so you > might need to cat it a couple of times while gfx is idle (like from the > console or an ssh session while nothing is drawing). Oh and one more request, what does "intel_reg_read 0x111b8" return on your system? I really don't want to disable RC6; it saves way too much power. So I'd like to understand what's going on here so we can either fix your system or reliably find a way to disable it on systems where the BIOS isn't allowing it... Thanks, -- Jesse Barnes, Intel Open Source Technology Center