From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Alan Third Newsgroups: gmane.emacs.bugs Subject: bug#42834: 28.0.50; macOS scroll and movement latency slows when display changes Date: Wed, 12 Aug 2020 23:24:10 +0200 (CEST) Message-ID: <20200812212407.GA42658@breton.holly.idiocy.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="17422"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 42834@debbugs.gnu.org To: Doug Davis Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Aug 12 23:25:10 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1k5yFC-0004Qn-7m for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 12 Aug 2020 23:25:10 +0200 Original-Received: from localhost ([::1]:33912 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k5yFA-00028H-S4 for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 12 Aug 2020 17:25:08 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:51886) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k5yF4-000286-7x for bug-gnu-emacs@gnu.org; Wed, 12 Aug 2020 17:25:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:34132) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k5yF3-0005DQ-U2 for bug-gnu-emacs@gnu.org; Wed, 12 Aug 2020 17:25:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1k5yF3-0003Gk-OM for bug-gnu-emacs@gnu.org; Wed, 12 Aug 2020 17:25:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Alan Third Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 12 Aug 2020 21:25:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 42834 X-GNU-PR-Package: emacs Original-Received: via spool by 42834-submit@debbugs.gnu.org id=B42834.159726746112517 (code B ref 42834); Wed, 12 Aug 2020 21:25:01 +0000 Original-Received: (at 42834) by debbugs.gnu.org; 12 Aug 2020 21:24:21 +0000 Original-Received: from localhost ([127.0.0.1]:45678 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k5yEP-0003Fp-Fk for submit@debbugs.gnu.org; Wed, 12 Aug 2020 17:24:21 -0400 Original-Received: from mailout-l3b-97.contactoffice.com ([212.3.242.97]:41806) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k5yEN-0003Fb-KZ for 42834@debbugs.gnu.org; Wed, 12 Aug 2020 17:24:20 -0400 Original-Received: from smtpauth1.co-bxl (smtpauth1.co-bxl [10.2.0.15]) by mailout-l3b-97.contactoffice.com (Postfix) with ESMTP id 1F44D562; Wed, 12 Aug 2020 23:24:13 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1597267453; s=20200222-6h9o; d=idiocy.org; i=alan@idiocy.org; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version:Content-Type:In-Reply-To; l=957; bh=sKqh1QO+aahSGZcfPdmKu9vV7G2mah3kWzrpi5kUsrA=; b=uAKLbQOSMCQHpAV0SW3qO4MKPyPnP6dEsVAs/HW+KKCAtpuuuEpccerFyLZRvuYr CljvDSO/q1+r6T43Wfp26hv4VqlpqnMX2aMyJhMIYC0N8EaI8cgD8T/0RVM5JF3Zn3G 6RClTaX+zoY1FBTmkBqMqW/+acWAbEb48xUnrydJT2C5yjpIeDRCRlOWNx9vK9xhW/b IQjfXWNPKFvPZkAWhy0GcbW4nHvfzAgQQVAs7kMdDEbHDljIT7bcfKqy39FMhnoWSkY mSu2dh6LNu1pDpeuMkmGbBpPZAkoLIc7sCDsdvEA8Dyyu13t0c9KndhuLs2ZmbUhToM 28Exkne43A== Original-Received: by smtp.mailfence.com with ESMTPA ; Wed, 12 Aug 2020 23:24:08 +0200 (CEST) Original-Received: by breton.holly.idiocy.org (Postfix, from userid 501) id 338D120244A7FF; Wed, 12 Aug 2020 22:24:07 +0100 (BST) Mail-Followup-To: Alan Third , Doug Davis , 42834@debbugs.gnu.org Content-Disposition: inline In-Reply-To: X-ContactOffice-Account: com:241649512 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:184879 Archived-At: On Wed, Aug 12, 2020 at 02:48:08PM -0400, Doug Davis wrote: > I'm observing this behavior on a MacBook Pro running macOS 10.15 > > initial condition: laptop is closed and plugged into an external display > over thunderbolt; I start and use Emacs with expected performance. After > unplugging the external display and opening the laptop to use by itself, > Emacs (which was already running) cursor movement and scrolling latency > shoots up (Emacs is just very "sluggish"). If I restart Emacs everything > goes back to normal. I'm observing the same behavior with 'emacs -Q'. I > don't see the same behavior from Emacs 27.1. Hi, Thanks for your report, I haven't seen this myself. Do you see the same thing going the other way? (laptop screen -> monitor) Is your monitor a retina screen? NS xwidgets were just added today, did you see this before? (or have you just tried Emacs 28 for the first time today?) Thanks! -- Alan Third