From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrey Skvortsov Subject: Re: [BISECTED REGRESSION in 3.19-rc1] [drm/i915] WARNING: drivers/gpu/drm/drm_irq.c:1077 drm_wait_one_vblank Date: Mon, 23 Feb 2015 23:28:02 +0300 Message-ID: <20150223202802.GD3871@crion86> 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/mixed; boundary="===============0279600637==" Return-path: In-Reply-To: <87bnkkrdns.fsf@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Sitsofe Wheeler Cc: Paul Bolle , David Airlie , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Daniel Vetter List-Id: intel-gfx@lists.freedesktop.org --===============0279600637== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="sfyO1m2EN8ZOtJL6" Content-Disposition: inline --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-- --===============0279600637== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4 IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK --===============0279600637==--