From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754892AbZCCOvT (ORCPT ); Tue, 3 Mar 2009 09:51:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752993AbZCCOvF (ORCPT ); Tue, 3 Mar 2009 09:51:05 -0500 Received: from silver.sucs.swan.ac.uk ([137.44.10.1]:50517 "EHLO silver.sucs.swan.ac.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752557AbZCCOvD (ORCPT ); Tue, 3 Mar 2009 09:51:03 -0500 Date: Tue, 3 Mar 2009 14:50:40 +0000 From: Sitsofe Wheeler To: "Pallipadi, Venkatesh" Cc: Ingo Molnar , "dri-devel@lists.sourceforge.net" , LKML , "Siddha, Suresh B" , Jesse Barnes Subject: Re: [TIP,regression,i915] /dev/dri/card0 is no longer present Message-ID: <20090303145040.GA7979@silver.sucs.org> References: <20090301110455.GA18547@silver.sucs.org> <20090301113948.GA3602@elte.hu> <20090301134809.GA4753@silver.sucs.org> <1236020758.4586.76.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1236020758.4586.76.camel@localhost.localdomain> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 02, 2009 at 11:05:58AM -0800, Pallipadi, Venkatesh wrote: > On Sun, 2009-03-01 at 05:48 -0800, Sitsofe Wheeler wrote: > > On Sun, Mar 01, 2009 at 12:39:48PM +0100, Ingo Molnar wrote: > > > > > > Thanks, i've reverted the commit for now. Could you please send > > > a 'dmesg' from the bootup with the failed driver? By all > > > likelyhood an ioremap failure causes a driver failure. > > > > > > > See below (drm says it initalized though...): > > > > [ 0.000000] Linux version 2.6.29-rc6-00006-g17581ad (@verona) (gcc version 4.2.4) #87 Sun Mar 1 13:42:28 GMT 2009 > > [ 0.000000] KERNEL supported cpus: > > [ 0.000000] Intel GenuineIntel > > [ 0.000000] PAT WC disabled due to known CPU erratum. > > Looks like PAT is getting disabled on this platform. Can you send the > output of /proc/cpuinfo please. The machine has a stepping of the Celeron M chip in it with PAT errata. I think it becomes disabled because it would require a careful code to ensure that WC was only used in circumstances where the errata would not matter... Here's the contents of /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : Intel(R) Celeron(R) M processor 900MHz stepping : 8 cpu MHz : 900.074 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx bts bogomips : 1800.14 clflush size : 64 power management: -- Sitsofe | http://sucs.org/~sits/