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#41187: 28.0.50; Flipped text Date: Sun, 9 Aug 2020 15:33:22 +0200 (CEST) Message-ID: <20200809133320.GA40657@breton.holly.idiocy.org> References: <9825B211-9633-47CC-9631-A516387ADDB5@gmail.com> <20200806204637.GA39555@breton.holly.idiocy.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="39778"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 41187@debbugs.gnu.org To: Wasim Abbas Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Aug 09 15:34:10 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 1k4lSk-000ADC-3y for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 09 Aug 2020 15:34:10 +0200 Original-Received: from localhost ([::1]:51192 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k4lSi-0003AB-EV for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 09 Aug 2020 09:34:08 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38068) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k4lSc-00039q-1K for bug-gnu-emacs@gnu.org; Sun, 09 Aug 2020 09:34:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:48820) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k4lSb-0006kz-PE for bug-gnu-emacs@gnu.org; Sun, 09 Aug 2020 09:34:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1k4lSb-0002eD-M7 for bug-gnu-emacs@gnu.org; Sun, 09 Aug 2020 09:34:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Alan Third Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 09 Aug 2020 13:34:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 41187 X-GNU-PR-Package: emacs Original-Received: via spool by 41187-submit@debbugs.gnu.org id=B41187.159698001410141 (code B ref 41187); Sun, 09 Aug 2020 13:34:01 +0000 Original-Received: (at 41187) by debbugs.gnu.org; 9 Aug 2020 13:33:34 +0000 Original-Received: from localhost ([127.0.0.1]:60366 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k4lS9-0002dU-SM for submit@debbugs.gnu.org; Sun, 09 Aug 2020 09:33:34 -0400 Original-Received: from mailout-l3b-97.contactoffice.com ([212.3.242.97]:59722) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k4lS7-0002dB-SN for 41187@debbugs.gnu.org; Sun, 09 Aug 2020 09:33:33 -0400 Original-Received: from smtpauth1.co-bxl (smtpauth1.co-bxl [10.2.0.15]) by mailout-l3b-97.contactoffice.com (Postfix) with ESMTP id 14C97D29; Sun, 9 Aug 2020 15:33:25 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1596980005; s=20200222-6h9o; d=idiocy.org; i=alan@idiocy.org; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version:Content-Type:Content-Transfer-Encoding:In-Reply-To; l=1047; bh=WQEDVY2QYCDPTVRMJF/h2M7z4euQabQVMTpsGTYsRUs=; b=My/EMU2J/A1uGsFcPDdmu73qF37qBqWAkU8PG0AhndRJjlvTksj4+/8v/WcD5TdO mZ2qci2VbKrpvhJReAiyKaycYo5oxr9AgT88la7LtvWRnLx70FUg5WQt77avG7YctPA 9t8vs/8gGoDtEHfuI7mvzuwF9GSGoKyQw5qbNROW0r3HsCxCI8aqqj3vXdYd9/ERza5 zTsdDC2KzbejjhjLdXHuf9iZsXSa6qDQZvYhL/Dt4cnWsxVrE8zoCdvfaEugpa94phW Z+uRVku9Oq4gZ3R29YaRiOpAU8dk3ByFN1YIytjTLX1fG3JXtTH8PvyHAqufmVvgu3v wjTDs5NGuQ== Original-Received: by smtp.mailfence.com with ESMTPA ; Sun, 9 Aug 2020 15:33:22 +0200 (CEST) Original-Received: by breton.holly.idiocy.org (Postfix, from userid 501) id C5D8C202440ADF; Sun, 9 Aug 2020 14:33:20 +0100 (BST) Mail-Followup-To: Alan Third , Wasim Abbas , 41187@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:184417 Archived-At: On Sun, Aug 09, 2020 at 10:50:23AM +0100, Wasim Abbas wrote: > Yes this is the text from the file I have opened. > > I just did a quick test again today and I can reliably reproduce it. > This time however it's not just flipped but corrupt frame buffer as > it seems? > > Here is what I have tried. Open up a longish C++ header file. Scroll > with mouse a few times. Nothing happened. Split the window > vertically and the scrolled a few more time rapidly. The corruption > started in that window only. Visited another buffer in that window > “messages” buffer you can see the flipped text there as well. > > Visit the first window (is content was displayed correct so far, I > think because its not refreshed yet) and move cursor up and down 1 > line at a time only that line is displayed wrong but also some other > corruptions in random places. It sounds suspiciously like we're flipping the bitmap and not unflipping it, but I can't see how that happens. Are you able to reproduce it with emacs -Q? -- Alan Third