From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751733AbbJLHCZ (ORCPT ); Mon, 12 Oct 2015 03:02:25 -0400 Received: from mga09.intel.com ([134.134.136.24]:23063 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751675AbbJLHCY (ORCPT ); Mon, 12 Oct 2015 03:02:24 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,671,1437462000"; d="scan'208";a="824713597" From: Jani Nikula To: Darren Hart , Linux Kernel Mailing List Cc: Daniel Vetter , Daniel Vetter , David Airlie , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: Re: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! In-Reply-To: <20151010190843.GB27137@malice.jf.intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <20151010190843.GB27137@malice.jf.intel.com> User-Agent: Notmuch/0.20.2+57~gff3a03d (http://notmuchmail.org) Emacs/24.4.1 (x86_64-pc-linux-gnu) Date: Mon, 12 Oct 2015 10:02:06 +0300 Message-ID: <87mvvobmdt.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 Sat, 10 Oct 2015, Darren Hart wrote: > The Debian 3.16.0 kernel does not emit the error, but I have not attempted a > bisection. > > The warning was added by: > 38cc46d drm/i915/bdw: Ack interrupts before handling them (GEN8) > 2014-06-18 (1 year, 4 months ago), Oscar Mateo But we don't start hitting the warning right away with that commit, do we? There's a bug about this with a bisected bad commit [1], please let's track this there. Thanks, Jani. [1] https://bugs.freedesktop.org/show_bug.cgi?id=92084 > > Follows: v3.15-rc8 > Preceedes: 3.17-rc1 > > This is not present in v3.16, so perhaps not present in the Debian kernel and > this is not a regression, but just reporting the condition as intended. > > Linux Version: v4.3-rc4 > Platform: Lenovo ThinkPad Yoga 12 > OS: Debian 8.2 > > $ dmesg | grep -i drm > [ 10.918367] [drm] Initialized drm 1.1.0 20060810 > [ 11.235005] [drm] Memory usable by graphics device = 4096M > [ 11.235009] fb: switching to inteldrmfb from simple > [ 11.235093] [drm] Replacing VGA console driver > [ 11.241160] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). > [ 11.241162] [drm] Driver supports precise vblank timestamp query. > [ 11.256249] [drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 21: Can't calculate constants, dotclock = 0! > [ 11.326946] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5 > [ 11.344097] [drm] Initialized i915 1.6.0 20150731 for 0000:00:02.0 on minor 0 > [ 11.344913] fbcon: inteldrmfb (fb0) is primary device > [ 12.462509] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 12.466498] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device > [ 12.794359] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 13.869733] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 13.869894] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 13.870058] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 22.656986] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 257.506246] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 257.506415] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 257.506584] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 257.506746] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 278.722570] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 278.722744] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 278.722908] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 1857.776390] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 1857.776549] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 1857.776710] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > [ 4057.592685] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! > > -- > Darren Hart > Intel Open Source Technology Center -- Jani Nikula, Intel Open Source Technology Center