From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#18912: 24.4; mode-line corruption on graphical frames in dual-headed display Date: Sat, 01 Nov 2014 10:42:29 +0200 Message-ID: <834mujz4zu.fsf@gnu.org> References: <54524135.8090405@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1414831407 32177 80.91.229.3 (1 Nov 2014 08:43:27 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 1 Nov 2014 08:43:27 +0000 (UTC) Cc: oitofelix@gnu.org, 18912@debbugs.gnu.org To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Nov 01 09:43:19 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XkUHH-0003vs-JL for geb-bug-gnu-emacs@m.gmane.org; Sat, 01 Nov 2014 09:43:19 +0100 Original-Received: from localhost ([::1]:45692 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XkUHF-00029g-30 for geb-bug-gnu-emacs@m.gmane.org; Sat, 01 Nov 2014 04:43:17 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45501) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XkUH5-00029Y-SN for bug-gnu-emacs@gnu.org; Sat, 01 Nov 2014 04:43:12 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XkUH0-0007QP-Mm for bug-gnu-emacs@gnu.org; Sat, 01 Nov 2014 04:43:07 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:47130) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XkUH0-0007Px-Jy for bug-gnu-emacs@gnu.org; Sat, 01 Nov 2014 04:43:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XkUH0-0000nX-1o for bug-gnu-emacs@gnu.org; Sat, 01 Nov 2014 04:43:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 01 Nov 2014 08:43:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18912 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 18912-submit@debbugs.gnu.org id=B18912.14148313753052 (code B ref 18912); Sat, 01 Nov 2014 08:43:02 +0000 Original-Received: (at 18912) by debbugs.gnu.org; 1 Nov 2014 08:42:55 +0000 Original-Received: from localhost ([127.0.0.1]:44343 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XkUGs-0000n8-VI for submit@debbugs.gnu.org; Sat, 01 Nov 2014 04:42:55 -0400 Original-Received: from mtaout21.012.net.il ([80.179.55.169]:42346) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XkUGp-0000mq-SC for 18912@debbugs.gnu.org; Sat, 01 Nov 2014 04:42:52 -0400 Original-Received: from conversion-daemon.a-mtaout21.012.net.il by a-mtaout21.012.net.il (HyperSendmail v2007.08) id <0NEC00700QAD3500@a-mtaout21.012.net.il> for 18912@debbugs.gnu.org; Sat, 01 Nov 2014 10:42:45 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout21.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NEC006D9QV9ZU80@a-mtaout21.012.net.il>; Sat, 01 Nov 2014 10:42:45 +0200 (IST) In-reply-to: X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:95338 > From: Stefan Monnier > Date: Fri, 31 Oct 2014 16:30:18 -0400 > Cc: 18912@debbugs.gnu.org > > > In this setup GNU Emacs corrupts the mode-line (a graphical glitch) > > drawing over it the buffer's line that would otherwise be below it. > > My guess is that it's a bug in the X11 acceleration code for your > graphics card. How could the graphics card "know" the details of the file that should not be visible in the window? The text that overwrites the mode line is not for any of the files shown above the mode line, it's the file that is the next one in the listing. So the only way the acceleration could cause that is if it returned incorrect information about the display dimensions/pixel size. I cannot explain to myself how this kind of bug in the graphics card could affect Emacs, except perhaps in a maximized frame. Bruno, do these problems happen in a non-maximized frame, e.g. the one you get immediately after invoking "emacs -Q"?