From owner-freebsd-x11@freebsd.org Thu Jan 10 16:00:09 2019 Return-Path: Delivered-To: freebsd-x11@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7C9C514904DC for ; Thu, 10 Jan 2019 16:00:09 +0000 (UTC) (envelope-from news@mips.inka.de) Received: from mail.inka.de (quechua.inka.de [IPv6:2a04:c9c7:0:1073:217:a4ff:fe3b:e77c]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1621189ADF for ; Thu, 10 Jan 2019 16:00:07 +0000 (UTC) (envelope-from news@mips.inka.de) Received: from localhost by mail.inka.de with local-rmail id 1ghckW-0005SV-W0; Thu, 10 Jan 2019 17:00:05 +0100 Received: from lorvorc.mips.inka.de (localhost [127.0.0.1]) by lorvorc.mips.inka.de (8.15.2/8.15.2) with ESMTP id x0AFwsYn023229 for ; Thu, 10 Jan 2019 16:58:54 +0100 (CET) (envelope-from news@lorvorc.mips.inka.de) Received: (from news@localhost) by lorvorc.mips.inka.de (8.15.2/8.15.2/Submit) id x0AFwsUk023228 for freebsd-x11@freebsd.org; Thu, 10 Jan 2019 16:58:54 +0100 (CET) (envelope-from news) To: freebsd-x11@freebsd.org From: Christian Weisgerber Newsgroups: list.freebsd.x11 Subject: Intel modesetting and tearing Date: Thu, 10 Jan 2019 15:58:54 -0000 (UTC) Message-ID: User-Agent: slrn/1.0.3 (FreeBSD) X-Rspamd-Queue-Id: 1621189ADF X-Spamd-Bar: +++++ Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [5.10 / 15.00]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(0.98)[0.985,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-x11@freebsd.org]; TO_DN_NONE(0.00)[]; AUTH_NA(1.00)[]; RCPT_COUNT_ONE(0.00)[1]; RCVD_COUNT_THREE(0.00)[4]; RCVD_TLS_LAST(0.00)[]; MX_GOOD(-0.01)[mail.inka.de]; NEURAL_SPAM_LONG(1.00)[1.000,0]; DMARC_NA(0.00)[inka.de]; NEURAL_SPAM_MEDIUM(0.98)[0.984,0]; R_SPF_NA(0.00)[]; FORGED_SENDER(0.30)[naddy@mips.inka.de,news@mips.inka.de]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:202113, ipnet:2a04:c9c7::/32, country:DE]; FROM_NEQ_ENVFROM(0.00)[naddy@mips.inka.de,news@mips.inka.de]; IP_SCORE(0.95)[ip: (2.49), ipnet: 2a04:c9c7::/32(1.25), asn: 202113(1.00), country: DE(-0.01)] X-BeenThere: freebsd-x11@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: X11 on FreeBSD -- maintaining and support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jan 2019 16:00:09 -0000 I recently switched from an obsolescent Radeon card to the built-in Intel HD Graphics P4600 with i915kms.ko and the modesetting driver. That works fine, but there is very noticeable tearing whenever something moves on-screen. If you google for it, you'll find plenty of complaints on Linux, so this is not a FreeBSD issue. For MPlayer, replacing the default Xvideo with GL video output (-vo gl) eliminates tearing. And as I found out just today and quite by accident, in Firefox toggling layers.acceleration.force-enabled to true will also eliminate all tearing, whether from soft-scrolling or when playing YouTube videos. Hallelujah! -- Christian "naddy" Weisgerber naddy@mips.inka.de