Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752815AbbBWU2O (ORCPT ); Mon, 23 Feb 2015 15:28:14 -0500 Received: from mail-la0-f49.google.com ([209.85.215.49]:38030 "EHLO mail-la0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752072AbbBWU2M (ORCPT ); Mon, 23 Feb 2015 15:28:12 -0500 From: Andrey Skvortsov X-Google-Original-From: Andrey Skvortsov Date: Mon, 23 Feb 2015 23:28:02 +0300 To: Sitsofe Wheeler Cc: Paul Bolle , Daniel Vetter , David Airlie , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Ville =?utf-8?B?U3lyasOkbMOk?= , Matt Roper , Jani Nikula Subject: Re: [BISECTED REGRESSION in 3.19-rc1] [drm/i915] WARNING: drivers/gpu/drm/drm_irq.c:1077 drm_wait_one_vblank Message-ID: <20150223202802.GD3871@crion86> Mail-Followup-To: Andrey Skvortsov , Sitsofe Wheeler , Paul Bolle , Daniel Vetter , David Airlie , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Ville =?utf-8?B?U3lyasOkbMOk?= , Matt Roper , Jani Nikula References: <20150131211609.GA3710@yulia-desktop> <1423053134.30076.12.camel@tiscali.nl> <20150204172645.GA2623@crion86> <1424092249.7482.10.camel@tiscali.nl> <87egpgre3d.fsf@intel.com> <87bnkkrdns.fsf@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="sfyO1m2EN8ZOtJL6" Content-Disposition: inline In-Reply-To: <87bnkkrdns.fsf@intel.com> X-PGP-Key: fp="21AF 2E6F 04EC 7E11 21C6 E399 2236 2F26 57A3 AEAD"; id="0x57A3AEAD"; get=; User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3029 Lines: 80 --sfyO1m2EN8ZOtJL6 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Feb 23, 2015 at 02:54:47PM +0200, Jani Nikula wrote: > On Mon, 23 Feb 2015, Jani Nikula wrote: > > On Mon, 16 Feb 2015, Paul Bolle wrote: > >> I still see this on v3.19. I booted with drm.debug=3D0x4. The almost 2K > >> lines in dmesg containing either "[drm" or this WARNING are pasted > >> below. I really know nothing about all this, but I do note that only t= he > >> WARNINGS are preceded by: > >> [drm:intel_calculate_wm] FIFO watermark level: -5 > >> [drm:i9xx_update_wm] FIFO watermarks - A: 26, B: 8 > >> > >> But perhaps that's another symptom of the same issue. A bit of staring > >> at the code couldn't help me determine that. > >> > >> Perhaps these debug messages help someone in discovering what might be > >> going on here. > > > > Please try v4.0-rc1 or try cherry-picking this on top of v3.19 and > > report back: > > > > commit f9b61ff6bce9a44555324b29e593fdffc9a115bc > > Author: Daniel Vetter > > Date: Wed Jan 7 13:54:39 2015 +0100 > > > > drm/i915: Push vblank enable/disable past encoder->enable/disable >=20 > https://bugs.freedesktop.org/show_bug.cgi?id=3D89108 >=20 Hi, Sitsofe, you wrote in your bug report (#89108), that you've got a black screen, when= you tried drm-intel-nightly branch. Do you have black screen with v4.0-rc1 on your eeepc? If so, is it similar to that I described here https://lkml.org/lkml/2015/2/= 3/594 ?=20 As we both had drm_wait_one_vblank warnings, I assume that we have the same= or similar chipsets. And your black screen could be potentially the same as mine.=20 --=20 Best regards, Andrey Skvortsov PGP Key ID: 0x57A3AEAD --sfyO1m2EN8ZOtJL6 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJU641SAAoJEAF8y6L1SLCtqu0QALzHuNZ5qWUQ+cnBJUZJZ3jL fN36TCXNRasVdl33etmOwElTAK/d3p6zN9xCWcPAn7In3hpdphE+Q4spw11aJEQ+ TBuwU4cGooUYdmZci/dz9A7d9iAqJ15E/PJdVOKh4plYSrNXY/p642NPlOIFVKlB fDYbzchLvW2GYhFDlwx/Q7sCPuOPTLvk7qwgCdb/p4GSEMDg12kbOpiSpoG+H8+f jdj7tk2r4gehLxIc6z0Dthrw3o06qs0TH1LLHRBJkSJA8vh4JocRIFa6ANQJK6c8 GDTxZ58MMUWgZ8TVXxB6qOBGx8U1RFTc2oStyQ5Wq2G4GNczrZZurE05muagdGWA tsY7fppQ7VCCcNkms578TAL/TVa7Gcpf6mbb8ipm3j7OHmAOjaSrol5WCl/t/5Go cSqEWQtxeMCmHRdVie3T3DPqoZsHMWKHSp9HCsDHNLPX38BQZiyCCHylj4E1Ts4p tYdf0Y7p2K+ohXVjnwCRxvxhgNvjfbpJeoKqBjOBUz+YzAerTVyHx8ZzmzsLPTJj JOrvYpB/uOISofExMmF2oW7HMx0tYpihu1G0gCu0CPsOUNtVRKFbkQyMZeyYdy4h ymb907A7OUgLYdi6U7baypgGEdTG/p70M2AYJWIbcfZfC0yGEaobB2fxq9Tevoo5 hqGyx/G2tUaaY01fFHZp =4Ruz -----END PGP SIGNATURE----- --sfyO1m2EN8ZOtJL6-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/