Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932893Ab3CVJM4 (ORCPT ); Fri, 22 Mar 2013 05:12:56 -0400 Received: from mail-ia0-f174.google.com ([209.85.210.174]:56871 "EHLO mail-ia0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932344Ab3CVJMy (ORCPT ); Fri, 22 Mar 2013 05:12:54 -0400 MIME-Version: 1.0 X-Originating-IP: [178.83.130.250] In-Reply-To: References: Date: Fri, 22 Mar 2013 10:12:54 +0100 X-Google-Sender-Auth: SfWqGcKFaGhp2DUnyBAqbFRgrqw Message-ID: Subject: Re: [Intel-gfx] Regression: HSW eDP broken on 3.9-rc[12] From: Daniel Vetter To: Takashi Iwai Cc: intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1234 Lines: 33 On Thu, Mar 14, 2013 at 4:15 PM, Takashi Iwai wrote: > I noticed that a Haswell desktop machine with eDP gets only the blank > screen on the latest Linus tree. It works fine with 3.8, so it's a > regression since 3.9-rc1. Actually, it's not a regression. It's > three regressions in a shot! (I had to do painful bisections three > times...) > > c464b2a17c59adedbdc02cc54341d630354edc3 > drm/i915: set TRANSCODER_EDP even earlier > > d6dd9eb1d96d2b7345fe4664066c2b7ed86da898 > drm/i915: dynamic Haswell display power well support > > commit cf0a6584aa6d382f802f2c3cacac23ccbccde0cd > drm/i915: write backlight harder > > > The first commit affects no matter whether power well is on or off. > It brings the eDP output always blank. Can you please attach the xrandr output and drm.debug=0xe dmesg from booting for that hsw eDP machine quickly? Thanks, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch -- 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/