From mboxrd@z Thu Jan 1 00:00:00 1970 From: Manuel =?UTF-8?B?R3Jvw58=?= Subject: drm/i915: Delay with fbc enabled Date: Fri, 24 Jun 2016 02:44:41 +0200 Message-ID: <20160624024441.7301b0ad@jenova> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1154129859==" Return-path: Received: from antila.uberspace.de (antila.uberspace.de [95.143.172.202]) by gabe.freedesktop.org (Postfix) with ESMTPS id A701D6EA0F for ; Fri, 24 Jun 2016 00:51:32 +0000 (UTC) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org --===============1154129859== Content-Type: multipart/signed; micalg=pgp-sha256; boundary="Sig_/kwJV+ap/S.TpGEf_x4XqzGU"; protocol="application/pgp-signature" --Sig_/kwJV+ap/S.TpGEf_x4XqzGU Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hello, since upgrading to Kernel 4.6, I experienced weird display delay issues on my Thinkpad x250. Downgrading to 4.5 or disabling fbc both fix that issue. In some specific X software (and only in those), modifications in UI display (e.g. keyboard input) is shown with a delay up to ~1s. Programs where I experienced this behaviour are e.g. sakura, wireshark-qt and sublime. This affects other Arch Linux users as well: https://bugs.archlinux.org/task/49623 There is also a little more information on this. If you can tell me what logs/analysis might be useful for you, I am happy to provide it to you, although I am not that experienced with this stuff. --=20 Gr=C3=BC=C3=9Fe/Regards Manuel Gro=C3=9F --Sig_/kwJV+ap/S.TpGEf_x4XqzGU Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJXbIJ5AAoJEMt3ZyBjt7GQKhYP/25r4/NK+qcR45h/N7gyCpdS wj379gtQBVvKtcX6v1XPEVEi7LQcyEaA+3/aPLkuqi4g/+SOb6u51m33Ht4rnjuL uJVDBX3t1RcxPTB4DIOLrtq5X+fUeFS0HXMWV2PQMI4E/l1TdZ3Xi2929qZOGtg6 JnU6pA+8QaEq6wVzSft2FJx/fnZyoHJncrKG5MCPseFmVvxvhs1z1bhftU1T6/cU ATG6y5zRzJslFU28m0ztNq8SkSpobjjM2p1SnqsJdIAbyfZjGEO3Ov+2Tu//cXwg Or+h9lcjW0jEiY77CTw7O1pB2q7yldwToM/T1oVlKoSMoYQA088r0nH7bjDvJ8cI 5C9huqgYp5xvwsJ8LPeKofm9NqWNamrMKGtcHyNnxSoD0H5HB6b1HnOpxly7FeP2 4o6Td1V1S+IEw5JY6YXL3sa/SCawkHreWoInToxT1pMPW/lVaealkllNQLD6Z9xa cKqb+9Wk2p2VZYroLp8v+ty+ETsjScH80TCXCp9rfr/ztJzIYDokbXljDPXDwVwA 3TkPfo2H2YaNd5CYiTPszaaPqCcVv48M4EM3tlP7GPfURuehdWOCSjSFb/m+tjLK 1REgzTO5adklSL7RCpBFZdnyYF/aZliv0yHBrtqYdreja10+ZKdjI6BvwD9SqIxj z9zGpRtCgn4DKd04fcHd =SCNg -----END PGP SIGNATURE----- --Sig_/kwJV+ap/S.TpGEf_x4XqzGU-- --===============1154129859== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4 IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlz dHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg== --===============1154129859==--