From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755462Ab1A1Uq3 (ORCPT ); Fri, 28 Jan 2011 15:46:29 -0500 Received: from astoria.ccjclearline.com ([64.235.106.9]:53202 "EHLO astoria.ccjclearline.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754961Ab1A1Uq2 (ORCPT ); Fri, 28 Jan 2011 15:46:28 -0500 Date: Fri, 28 Jan 2011 15:46:08 -0500 (EST) From: "Robert P. J. Day" X-X-Sender: rpjday@localhost6.localdomain6 To: "Rafael J. Wysocki" cc: Chris Wilson , dri-devel@lists.freedesktop.org, Len Brown , linux-kernel@vger.kernel.org Subject: Re: has the i915 "black screen" boot issue returned? [BISECTED] In-Reply-To: <201101282112.52798.rjw@sisk.pl> Message-ID: References: <1bdc18$jdthb8@fmsmga002.fm.intel.com> <201101282112.52798.rjw@sisk.pl> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - astoria.ccjclearline.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - crashcourse.ca X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 28 Jan 2011, Rafael J. Wysocki wrote: > Alternatively, you could take the vanilla Linus' tree and replace > ioremap_cache() with ioremap() in include/linux/acpi_io.h . Please > try that and see if it makes a difference. as a quick followup, i applied the following simple patch: $ git diff diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index 64fd644..28adc6d 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -495,6 +495,8 @@ int intel_opregion_setup(struct drm_device *dev) opregion->acpi = base + OPREGION_ACPI_OFFSET; } +return 0; // rday + if (mboxes & MBOX_SWSCI) { DRM_DEBUG_DRIVER("SWSCI supported\n"); opregion->swsci = base + OPREGION_SWSCI_OFFSET; to the latest tree, and it gave me a booting kernel, no black screen issue. i will not pretend to understand why that fixes the problem but it does. rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================