From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965288AbcFMKOk (ORCPT ); Mon, 13 Jun 2016 06:14:40 -0400 Received: from mga04.intel.com ([192.55.52.120]:56803 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964862AbcFMKOj (ORCPT ); Mon, 13 Jun 2016 06:14:39 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,466,1459839600"; d="scan'208";a="1000770534" From: Jani Nikula To: James Bottomley , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: linux-kernel , Rodrigo Vivi Subject: Re: Bad flicker on skylake HQD due to code in the 4.7 merge window In-Reply-To: <1464701638.2234.1.camel@HansenPartnership.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <1464638381.2240.3.camel@HansenPartnership.com> <871t4ibr7k.fsf@intel.com> <1464701638.2234.1.camel@HansenPartnership.com> User-Agent: Notmuch/0.22+12~gbdd9442 (http://notmuchmail.org) Emacs/24.4.1 (x86_64-pc-linux-gnu) Date: Mon, 13 Jun 2016 13:14:36 +0300 Message-ID: <87mvmp9z03.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, 31 May 2016, James Bottomley wrote: > On Tue, 2016-05-31 at 10:51 +0300, Jani Nikula wrote: >> On Mon, 30 May 2016, James Bottomley < >> James.Bottomley@HansenPartnership.com> wrote: >> > I've tested a pristine 4.6.0 system, so it's definitely something >> > that >> > went in during the merge window. The flicker isn't continuous, >> > it's >> > periodic, with an interval of something like 2-5 seconds. It looks >> > like an old analogue TV going out of sync and then resyncing. I've >> > attached the dmesg and X.org log below just in case they can help. >> > I >> > might be able to bisect this next week, but, unfortunately, this is >> > my >> > current laptop and I'm travelling this week. >> >> Please try i915.enable_psr=0 module parameter. > > Makes no discernable difference. Current parameter settings are: Sorry for the silence. Would you mind trying out drm-intel-nightly branch of [1]? BR, Jani. [1] http://cgit.freedesktop.org/drm-intel -- Jani Nikula, Intel Open Source Technology Center