From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [BUG/REGRESSION] Screen flickering Date: Wed, 13 May 2015 12:14:39 +0300 Message-ID: <87iobw3klc.fsf@intel.com> References: <87pp65efmo.fsf@hank.tgummerer.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <87pp65efmo.fsf@hank.tgummerer.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Cc: jan@gondor.com, Tvrtko Ursulin , linux-kernel@vger.kernel.org, Thomas Gummerer , Daniel Vetter List-Id: dri-devel@lists.freedesktop.org T24gVHVlLCAxMiBNYXkgMjAxNSwgVGhvbWFzIEd1bW1lcmVyIDx0Lmd1bW1lcmVyQGdtYWlsLmNv bT4gd3JvdGU6Cj4gSGksCj4KPiBJIG5vdGljZWQgdGhhdCBvbiBteSBtYWNoaW5lIHRoZSBzY3Jl ZW4gc3RhcnRzIHRvIGZsaWNrZXIgYWZ0ZXIgSQo+IHN1c3BlbmQgYW5kIHJlc3VtZSBteSBtYWNo aW5lLCBvbiB0aGUgbWFpbiBsYXB0b3AgZGlzcGxheSBpZiBhbiBleHRlcm5hbAo+IGRpc3BsYXkg aXMgYXR0YWNoZWQgd2l0aCBrZXJuZWwgdjQuMS1yYzEuICBJIHRyYWNrZWQgdGhlIHJlZ3Jlc3Np b24gZG93bgo+IHRvIGNvbW1pdCBjOWYwMzhhMWE1OTIgKCJkcm0vaTkxNTogRG9uJ3QgYXNzdW1l IHByaW1hcnkgJiBjdXJzb3IgYXJlCj4gYWx3YXlzIG9uIGZvciB3bSBjYWxjdWxhdGlvbiAodjQp IiksIGFuZCBzZW50IGEgcGF0Y2ggdGhhdCBmaXhlcyB0aGF0Cj4gYmVoYXZpb3IgYXQgWzFdIGFi b3V0IHR3byB3ZWVrcyBhZ28sIGFsdGhvdWdoIEknbSBub3Qgc3VyZSBpdCdzIHRoZQo+IHJpZ2h0 IHRoaW5nIHRvIGRvLCBhcyBJJ20gbm90IHZlcnkgZmFtaWxpYXIgd2l0aCB0aGUgY29kZS4gIFRo ZSBzYW1lIGJ1Zwo+IHN0aWxsIGV4aXN0cyBpbiB2djQuMS1yYzMuCj4KPiBKYW4gTmllaHVzbWFu biBjb25maXJtZWQgdGhlIGJlaGF2aW9yLCBidXQgdGhlcmUgaGFzIGJlZW4gbm8gZnVydGhlcgo+ IGRpc2N1c3Npb24gb24gdGhlIHRvcGljLiAgSSBhbHNvIGZvcmdvdCB0byBjYyB0aGUgcGVvcGxl IHRoYXQgd2VyZQo+IGludm9sdmVkIGluIHRoZSBwYXRjaCB0aGF0IGNhdXNlZCB0aGUgcmVncmVz c2lvbiAoc29ycnkgYWJvdXQgdGhhdCkuCj4KPiBJcyB0aGVyZSBhbnl0aGluZyBlbHNlIHRoYXQg SSBjYW4gZG8gdG8gaGVscCBmaXhpbmcgdGhpcyBpc3N1ZT8KCklzIHRoaXMgdGhlIHNhbWUgYXMg aHR0cHM6Ly9idWd6aWxsYS5rZXJuZWwub3JnL3Nob3dfYnVnLmNnaT9pZD05ODE0MSA/CgpCUiwK SmFuaS4KCgo+Cj4gVGhhbmtzLAo+IFRob21hcwo+Cj4gWzFdIGh0dHA6Ly9saXN0cy5mcmVlZGVz a3RvcC5vcmcvYXJjaGl2ZXMvaW50ZWwtZ2Z4LzIwMTUtQXByaWwvMDY1NDk0Lmh0bWwKCi0tIApK YW5pIE5pa3VsYSwgSW50ZWwgT3BlbiBTb3VyY2UgVGVjaG5vbG9neSBDZW50ZXIKX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcg bGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVlZGVz a3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754261AbbEMJMk (ORCPT ); Wed, 13 May 2015 05:12:40 -0400 Received: from mga01.intel.com ([192.55.52.88]:46785 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754207AbbEMJMh (ORCPT ); Wed, 13 May 2015 05:12:37 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,420,1427785200"; d="scan'208";a="725171076" From: Jani Nikula To: Thomas Gummerer , dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, David Airlie , Daniel Vetter , Thomas Gummerer , jan@gondor.com, Tvrtko Ursulin , Michael Leuchtenburg , Matt Roper Subject: Re: [BUG/REGRESSION] Screen flickering In-Reply-To: <87pp65efmo.fsf@hank.tgummerer.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <87pp65efmo.fsf@hank.tgummerer.com> User-Agent: Notmuch/0.19+112~g77230b0 (http://notmuchmail.org) Emacs/24.4.1 (x86_64-pc-linux-gnu) Date: Wed, 13 May 2015 12:14:39 +0300 Message-ID: <87iobw3klc.fsf@intel.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 12 May 2015, Thomas Gummerer wrote: > Hi, > > I noticed that on my machine the screen starts to flicker after I > suspend and resume my machine, on the main laptop display if an external > display is attached with kernel v4.1-rc1. I tracked the regression down > to commit c9f038a1a592 ("drm/i915: Don't assume primary & cursor are > always on for wm calculation (v4)"), and sent a patch that fixes that > behavior at [1] about two weeks ago, although I'm not sure it's the > right thing to do, as I'm not very familiar with the code. The same bug > still exists in vv4.1-rc3. > > Jan Niehusmann confirmed the behavior, but there has been no further > discussion on the topic. I also forgot to cc the people that were > involved in the patch that caused the regression (sorry about that). > > Is there anything else that I can do to help fixing this issue? Is this the same as https://bugzilla.kernel.org/show_bug.cgi?id=98141 ? BR, Jani. > > Thanks, > Thomas > > [1] http://lists.freedesktop.org/archives/intel-gfx/2015-April/065494.html -- Jani Nikula, Intel Open Source Technology Center