From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Robert P. J. Day" Subject: Re: has the i915 "black screen" boot issue returned? [BISECTED] Date: Tue, 1 Feb 2011 07:56:21 -0500 (EST) Message-ID: References: <849307$bbem1h@azsmga001.ch.intel.com> <0d30dc$kt3gd6@orsmga001.jf.intel.com> <849307$bbh907@azsmga001.ch.intel.com> <1bdc18$jdthb8@fmsmga002.fm.intel.com> <0d30dc$kt5m7m@orsmga001.jf.intel.com> <1bdc18$jdtqdk@fmsmga002.fm.intel.com> <0d30dc$kt63ev@orsmga001.jf.intel.com> <1bdc18$jev277@fmsmga002.fm.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from astoria.ccjclearline.com (astoria.ccjclearline.com [64.235.106.9]) by gabe.freedesktop.org (Postfix) with ESMTP id 54D139E75A for ; Tue, 1 Feb 2011 04:56:26 -0800 (PST) In-Reply-To: <1bdc18$jev277@fmsmga002.fm.intel.com> 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 To: Chris Wilson Cc: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org On Tue, 1 Feb 2011, Chris Wilson wrote: > On Tue, 1 Feb 2011 07:05:16 -0500 (EST), "Robert P. J. Day" wrote: > > > > any new developments on this issue? > > Not really, the only thing left to confirm is whereabouts it goes wrong. > > About the only routine of significance is alse_set_backlight(). > > Does a 'return ASLE_BACKLIGHT_FAILED;' as the first line of that function > have a similar effect to the current hack? apparently, it does: @@ -150,6 +150,8 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) struct opregion_asle *asle = dev_priv->opregion.asle; u32 max; +return ASLE_BACKLIGHT_FAILED; // rday + if (!(bclp & ASLE_BCLP_VALID)) return ASLE_BACKLIGHT_FAILED; gives me a good boot. this is the diff with relation to the recently tagged 2.6.38-rc3. anything else you want me to test? rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================