From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#38199: 27.0.50; [Cairo] Display artifacts (small vertical colored bars) Date: Fri, 15 Nov 2019 09:59:15 +0200 Message-ID: <83a78x4lkc.fsf@gnu.org> References: <87eeybd12v.fsf@bastian-desktop.i-did-not-set--mail-host-address--so-tickle-me> <83tv7660w8.fsf@gnu.org> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="56788"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 38199@debbugs.gnu.org To: Bastian Beischer Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Nov 15 09:01:03 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iVWXN-000Ebl-K5 for geb-bug-gnu-emacs@m.gmane.org; Fri, 15 Nov 2019 09:01:01 +0100 Original-Received: from localhost ([::1]:36406 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVWXL-0004g7-Li for geb-bug-gnu-emacs@m.gmane.org; Fri, 15 Nov 2019 03:00:59 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39640) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVWWS-0003oI-C4 for bug-gnu-emacs@gnu.org; Fri, 15 Nov 2019 03:00:09 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iVWWR-0005FG-6T for bug-gnu-emacs@gnu.org; Fri, 15 Nov 2019 03:00:04 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:54954) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iVWWR-0005F2-3H for bug-gnu-emacs@gnu.org; Fri, 15 Nov 2019 03:00:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iVWWQ-0003pS-Tc for bug-gnu-emacs@gnu.org; Fri, 15 Nov 2019 03:00:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 15 Nov 2019 08:00:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 38199 X-GNU-PR-Package: emacs Original-Received: via spool by 38199-submit@debbugs.gnu.org id=B38199.157380478114660 (code B ref 38199); Fri, 15 Nov 2019 08:00:02 +0000 Original-Received: (at 38199) by debbugs.gnu.org; 15 Nov 2019 07:59:41 +0000 Original-Received: from localhost ([127.0.0.1]:35542 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iVWW5-0003oO-7S for submit@debbugs.gnu.org; Fri, 15 Nov 2019 02:59:41 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:58758) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iVWW1-0003oA-Tv for 38199@debbugs.gnu.org; Fri, 15 Nov 2019 02:59:40 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:40638) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iVWVv-00053X-Mj; Fri, 15 Nov 2019 02:59:31 -0500 Original-Received: from [176.228.60.248] (port=2902 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1iVWVu-0008LN-7N; Fri, 15 Nov 2019 02:59:31 -0500 In-reply-to: (message from Bastian Beischer on Thu, 14 Nov 2019 23:30:32 +0100) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:171634 Archived-At: > From: Bastian Beischer > Date: Thu, 14 Nov 2019 23:30:32 +0100 > Cc: 38199@debbugs.gnu.org > > > Did you try to disable "advanced" or "optimization" features of your > > display driver software? Or upgrade it to a newer version? The > > artifacts your screenshot shows don't look like something Emacs could > > produce. > > You are right: It could well be a cairo library or driver issue. I am > using the default optimized builds from the Arch Linux x86_64 > repository, which means: > > cairo: 1.17.2+17+g52a7c79fd-2 > Xorg: 1.20.5-4 > mesa: 19.2.3-2 > linux: 5.3.11.1-1 > > My GPU is NVIDIA Geforce GTX 285 (nouveau kernel driver, combined with > modesetting / glamor). Should I report a bug against cairo? Maybe; it could also be a bug in the NVIDIA drivers. So before reporting a Cairo bug, I'd look at the settings of your video driver, and if there are any "optimization" features there, try to disable them.