From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751825Ab2AVK3T (ORCPT ); Sun, 22 Jan 2012 05:29:19 -0500 Received: from host132-213-122-188.magnalink.cz ([188.122.213.132]:49189 "EHLO nbgentoo.localdomain" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751529Ab2AVK3R (ORCPT ); Sun, 22 Jan 2012 05:29:17 -0500 Date: Sun, 22 Jan 2012 11:29:12 +0100 From: Lubos Kolouch To: Keith Packard Cc: linux-kernel@vger.kernel.org Subject: Re: i915 wakes from suspend to RAM with blank screen after commit cd9dde44f47501394b9f0715b6a36a92aa74c0d0 Message-ID: <20120122102912.GA2123@nbgentoo> References: <86mx9gkjlv.fsf@sumi.keithp.com> <20120121184453.GA2698@nbgentoo> <86hazokcb7.fsf@sumi.keithp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <86hazokcb7.fsf@sumi.keithp.com> X-Operating-System: Linux nbgentoo 3.3.0-rc1-dirty User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jan 21, 2012, 12:53:00, Keith Packard wrote: > On Sat, 21 Jan 2012 19:44:53 +0100, Lubos Kolouch wrote: > > > dmesg after boot - http://paste.pocoo.org/show/538343/ > > dmesg after failed resume - http://paste.pocoo.org/show/538344/ > > Ok, that's weird -- we're choosing a different display port link speed > on resume than at boot time. I have a theory that intel_dp_mode_fixup is > accidentally using the current bpp value when computing the values > needed for the new mode, and that this value may differ between boot and > resume. > > Here's a patch to dump some debug info out to test this theory. > Thanks, here you go: dmesg after boot - http://paste.pocoo.org/show/538625/ dmesg after failed resume - http://paste.pocoo.org/show/538626/ Lubos