From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: Critical regression in 4.7-rcX Date: Fri, 15 Jul 2016 17:43:30 +0300 Message-ID: <20160715144330.GI4329@intel.com> References: <4f3efccf-5d73-d69f-5d79-2107537a8815@lwfinger.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id 581066E0C6 for ; Fri, 15 Jul 2016 14:43:35 +0000 (UTC) Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Daniel Vetter Cc: intel-gfx , LKML , Shubhangi Shrivastava , Linus Torvalds , Larry Finger List-Id: intel-gfx@lists.freedesktop.org T24gRnJpLCBKdWwgMTUsIDIwMTYgYXQgMDQ6Mjc6MjdQTSArMDIwMCwgRGFuaWVsIFZldHRlciB3 cm90ZToKPiBPbiBGcmksIEp1bCAxNSwgMjAxNiBhdCA4OjU1IEFNLCBMaW51cyBUb3J2YWxkcwo+ IDx0b3J2YWxkc0BsaW51eC1mb3VuZGF0aW9uLm9yZz4gd3JvdGU6Cj4gPiBPbiBUaHUsIDE0IEp1 bCAyMDE2LCBMYXJyeSBGaW5nZXIgd3JvdGU6Cj4gPj4gVG8gYW55b25lIGtlZXBpbmcgdHJhY2sg b2YgcmVncmVzc2lvbnMgaW4ga2VybmVsIDQuNywgSSBjYWxsIHlvdXIgYXR0ZW50aW9uIHRvCj4g Pj4gaHR0cHM6Ly9idWdzLmZyZWVkZXNrdG9wLm9yZy9zaG93X2J1Zy5jZ2k/aWQ9OTY2NzUuCj4g Pj4KPiA+PiBUaGlzIGJ1ZyBjYXVzZXMgZHJpdmVyIGk5MTUgdG8gZmFpbCB0byBjb25uZWN0IHRv IHRoZSBkaXNwbGF5LCBhbmQgcmVzdWx0cyBpbgo+ID4+IGEgYmxhbmsgc2NyZWVuIGFzIHNvb24g YXMgdGhlIGtlcm5lbCBpcyBsb2FkZWQuIFRoZSBvbmx5IHdheSB0byBvcGVyYXRlIHdpdGgKPiA+ PiBrZXJuZWwgNC43IGlzIHRvIGFkZCAibm9tb2Rlc2V0IiB0byB0aGUgY29tbWFuZCBsaW5lLiBU aGUgcHJvYmxlbSB3YXMgYmlzZWN0ZWQKPiA+PiB0byBjb21taXQgZjIxYTIxOTgzZWYxM2EgKCJk cm0vaTkxNTogU3BsaXR0aW5nIGludGVsX2RwX2RldGVjdCIpLgo+ID4KPiA+IERhbmllbD8gSmFu aT8gVGltZSB0byByZXZlcnQ/Cj4gCj4gWXVwLiBNZWFucyB0aGF0IEknbGwgZ2V0IHRvIHJldmVy dCBhIHBpbGUgb2YgcGF0Y2hlcyAocGx1cyBldmVuIG1vcmUKPiBpbiAtbmV4dCksIGJ1dCB0aGF0 J3Mgd2hhdCB3ZSBnZXQgZm9yIG5vdCBoYW5kbGluZyByZWdyZXNzaW9ucyB0aW1lbHkuCj4gRGF2 ZSBwb2tlZCBtZSBhYm91dCB0aGUgc2FtZSBidWcgYWxyZWFkeSB0b28uIEJ1dCB3aWxsIHRha2Ug YSBmZXcgZGF5cwo+IHVudGlsIHRoZSBwdWxsIGlzIGluIHlvdXIgaW5ib3ggSSBndWVzcy4KCkkg YXR0YWNoZWQgYSBvbmVsaW5lciB0byB0aGUgYnVnIHRvZGF5LCB0aGF0IEkgKnRoaW5rKiBzaG91 bGQgZml4IHRoZQpwcm9ibGVtLgoKLS0gClZpbGxlIFN5cmrDpGzDpApJbnRlbCBPVEMKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxp bmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJl ZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg== From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752671AbcGOOni (ORCPT ); Fri, 15 Jul 2016 10:43:38 -0400 Received: from mga09.intel.com ([134.134.136.24]:59709 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751103AbcGOOng (ORCPT ); Fri, 15 Jul 2016 10:43:36 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,368,1464678000"; d="scan'208";a="1022419672" Date: Fri, 15 Jul 2016 17:43:30 +0300 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= To: Daniel Vetter Cc: Linus Torvalds , Larry Finger , LKML , Shubhangi Shrivastava , Jani Nikula , intel-gfx Subject: Re: Critical regression in 4.7-rcX Message-ID: <20160715144330.GI4329@intel.com> References: <4f3efccf-5d73-d69f-5d79-2107537a8815@lwfinger.net> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 15, 2016 at 04:27:27PM +0200, Daniel Vetter wrote: > On Fri, Jul 15, 2016 at 8:55 AM, Linus Torvalds > wrote: > > On Thu, 14 Jul 2016, Larry Finger wrote: > >> To anyone keeping track of regressions in kernel 4.7, I call your attention to > >> https://bugs.freedesktop.org/show_bug.cgi?id=96675. > >> > >> This bug causes driver i915 to fail to connect to the display, and results in > >> a blank screen as soon as the kernel is loaded. The only way to operate with > >> kernel 4.7 is to add "nomodeset" to the command line. The problem was bisected > >> to commit f21a21983ef13a ("drm/i915: Splitting intel_dp_detect"). > > > > Daniel? Jani? Time to revert? > > Yup. Means that I'll get to revert a pile of patches (plus even more > in -next), but that's what we get for not handling regressions timely. > Dave poked me about the same bug already too. But will take a few days > until the pull is in your inbox I guess. I attached a oneliner to the bug today, that I *think* should fix the problem. -- Ville Syrjälä Intel OTC