From unknown Fri Sep 12 10:18:59 2025 X-Loop: help-debbugs@gnu.org Subject: bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames Resent-From: nljlistbox2@gmail.com (N. Jackson) Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 29 Sep 2017 18:46:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 28652 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: 28652@debbugs.gnu.org X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.150671070729796 (code B ref -1); Fri, 29 Sep 2017 18:46:02 +0000 Received: (at submit) by debbugs.gnu.org; 29 Sep 2017 18:45:07 +0000 Received: from localhost ([127.0.0.1]:39612 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dy0Ha-0007kV-Do for submit@debbugs.gnu.org; Fri, 29 Sep 2017 14:45:07 -0400 Received: from eggs.gnu.org ([208.118.235.92]:58497) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dy0HX-0007jk-3B for submit@debbugs.gnu.org; Fri, 29 Sep 2017 14:45:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dy0HP-0006q0-3N for submit@debbugs.gnu.org; Fri, 29 Sep 2017 14:44:57 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: * X-Spam-Status: No, score=1.1 required=5.0 tests=BAYES_50, FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,T_DKIM_INVALID autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:60620) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dy0HO-0006pv-U7 for submit@debbugs.gnu.org; Fri, 29 Sep 2017 14:44:55 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49436) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dy0HL-0005hv-JO for bug-gnu-emacs@gnu.org; Fri, 29 Sep 2017 14:44:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dy0HG-0006fK-82 for bug-gnu-emacs@gnu.org; Fri, 29 Sep 2017 14:44:51 -0400 Received: from mail-it0-x236.google.com ([2607:f8b0:4001:c0b::236]:56739) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dy0HG-0006eT-0f for bug-gnu-emacs@gnu.org; Fri, 29 Sep 2017 14:44:46 -0400 Received: by mail-it0-x236.google.com with SMTP id g18so808756itg.5 for ; Fri, 29 Sep 2017 11:44:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:mime-version; bh=uPQeFO8CPCqEzU8GVuSfm4/2/3jH2dPtavRUcYB/Ye8=; b=sDpyL9xbZYarmTJBjSk03PT2wuiTXU3jqv/+Trzxmuf56BGCT3f2dbEfVGr8KRWB2V V4v/d9St3IdB9mocxRxDHNsqMyGa3mSm+pv0xUZ2Pg6P+k0ubnswlF0iPVFCUb1m1po6 tGyMNLJuvIeCjfUa+/RIVUKnq71i0g6O898uJb0yuiOVEODxg4WrCUhZScUF9nfw2uFP hDp9+GjVbKGhBTSHzZAgfvtN/BrzMF7NvDOhzWeHXvU0MGLW0zWkbgMIUCT0MMfn6c0V J2i8IrSOhqxQZgjXgxokIqJ4nctA00JgEeDFjjN7LJafQhZhaFycJX1FUl9/LeOyz7z3 iN0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version; bh=uPQeFO8CPCqEzU8GVuSfm4/2/3jH2dPtavRUcYB/Ye8=; b=ImDH8cWt/hZWQX+LHquGSGpWWscgLR8tuXaWvG+jQ5ARXU2vSebTDq2DUKersrlWgo /uFUFIB6EfcHRuTrz0fhhHBWEwsqdWC3AHrpumv/xPu5+8BImTUq6q344gwZV1h5Mcoz x9t+aeBlgRBvt5OMXNlPOC86Dyx5rHLElKL+h6UgYhw0Uyxsr9eUTgG4eWQVSqx7bwKK wWtRoYE8cfkYUCBQFdY6RpAh09MS7RIPGF4Lltn2wgQF7i98Gbams8l2djQLWxDS+PUu wybGsYkAYo+3vuOVBWWrZzjuDHSNIMzUxBLFgjEvQieGdk5eLdqtdV1J2JexPPR9MAI7 ImjQ== X-Gm-Message-State: AHPjjUhrvvZ1ZylZVr7v0zYmbUAO+MLlJcPMf4imxrDRgutrH4vrJJ5t uLea1i6zlIR5d0DpoAybBktLCg== X-Google-Smtp-Source: AOwi7QBGCv/DWtIuQrkEg832wJcX+WoTbFJj9eHwW0eIdzThPpIS8AO8r5/CzTds7lQv5jEGeg4BYg== X-Received: by 10.36.86.142 with SMTP id o136mr8954932itb.16.1506710684818; Fri, 29 Sep 2017 11:44:44 -0700 (PDT) Received: from moondust.localdomain.nodomain.none ([72.143.113.194]) by smtp.gmail.com with ESMTPSA id v19sm1663032ite.0.2017.09.29.11.44.43 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 29 Sep 2017 11:44:44 -0700 (PDT) From: nljlistbox2@gmail.com (N. Jackson) Date: Fri, 29 Sep 2017 14:44:43 -0400 Message-ID: <87377573ac.fsf@moondust.localdomain> MIME-Version: 1.0 Content-Type: text/plain X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -3.8 (---) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.8 (---) When switching between windows in Gnome using Alt-Tab there is often a bright flash just after switching to an Emacs frame. It seems as if the Emacs frame is displayed and then a window of some other application appears for a fraction of a second before the display settles down to the showing the Emacs frame. Because the flash is so quick, I Initially thought the Emacs frame was being displayed in white before being painted to it's correct display, but this is not the case. By choosing distinctive colours or distinctive images in my other applications, I can tell that it is the window of another application that is flashing up. [This flashing might be particularly noticeable on this system as I use a dark theme in Emacs (Wheatgrass) and most other application windows are predominantly white. Also I keep all my Emacs frames and all my other application windows maximised or full screen (because I have a small display).] This flashing does not happen in Emacs 24 or 25. It happens in Emacs 26 and I think I also saw it when I built master back in March [1]. However, it does not happen in Emacs 26 if I put (add-to-list 'default-frame-alist '(inhibit-double-buffering . t)) in my init file and restart Emacs. [1] https://debbugs.gnu.org/cgi/bugreport.cgi?bug=25851#170 In GNU Emacs 26.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.17) of 2017-09-24 built on moondust.localdomain Repository revision: d93301242f38d3d9aaa55899c07496f0bdecf391 Windowing system distributor 'Fedora Project', version 11.0.11903000 System Description: Fedora release 25 (Twenty Five) Configured using: 'configure --without-pop 'CFLAGS=-O2 -g3 -gdwarf-4'' Configured features: XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 LCMS2 Important settings: value of $LANG: en_CA.UTF-8 value of $XMODIFIERS: @im=none locale-coding-system: utf-8-unix Major mode: Text Minor modes in effect: diff-auto-refine-mode: t flyspell-mode: t pdf-occur-global-minor-mode: t shell-dirtrack-mode: t recentf-mode: t display-battery-mode: t display-time-mode: t show-paren-mode: t savehist-mode: t save-place-mode: t electric-pair-mode: t desktop-save-mode: t delete-selection-mode: t cua-mode: t tooltip-mode: t global-eldoc-mode: t electric-indent-mode: t mouse-wheel-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t temp-buffer-resize-mode: t size-indication-mode: t column-number-mode: t line-number-mode: t global-visual-line-mode: t visual-line-mode: t transient-mark-mode: t Load-path shadows: /home/nlj/.emacs.d/elpa/org-plus-contrib-20170917/org-contacts hides ~/.emacs.d/modules/org-contacts /home/nlj/.emacs.d/elpa/org-plus-contrib-20170917/org-habit hides /data/projects/vc/emacs/git/emacs/lisp/org/org-habit /home/nlj/.emacs.d/elpa/org-plus-contrib-20170917/ob-python hides /data/projects/vc/emacs/git/emacs/lisp/org/ob-python /home/nlj/.emacs.d/elpa/org-plus-contrib-20170917/ob-clojure hides /data/projects/vc/emacs/git/emacs/lisp/org/ob-clojure /home/nlj/.emacs.d/elpa/org-plus-contrib-20170917/ox-md 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multi-isearch mm-archive mailalias smtpmail gnus-html url-queue help-fns radix-tree browse-url xml url-cache mm-url url url-proxy url-privacy url-expand url-methods url-history url-cookie url-domsuf url-util bbdb-message sendmail sort smiley gnus-cite gnus-async gnus-bcklg nnir qp mail-extr gnus-ml disp-table hl-line nndraft nnmh utf-7 server pinentry epa-file network-stream nsm starttls nnfolder bbdb-gnus bbdb-mua nnnil gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-msg nntp gnus-cache cl-extra help-mode vc-git diff-mode map flyspell ispell pdf-occur ibuf-ext ibuffer ibuffer-loaddefs tablist tablist-filter semantic/wisent/comp semantic/wisent semantic/wisent/wisent semantic/util-modes semantic/util semantic semantic/tag semantic/lex semantic/fw mode-local cedet pdf-isearch let-alist pdf-misc imenu pdf-tools compile cus-edit pdf-view bookmark pp pdf-cache pdf-info tq pdf-util org-contacts org-capture gnus-art mm-uu mml2015 mm-view mml-smime smime dig mailcap gnus-sum gnus-group gnus-undo gnus-start gnus-cloud nnimap nnmail mail-source tls gnutls utf7 netrc nnoo parse-time gnus-spec gnus-int gnus-range message subr-x puny rfc822 mml mml-sec epa derived epg mm-decode mm-bodies mm-encode mail-parse rfc2231 gmm-utils mailheader gnus-win gnus nnheader org-duration org-eldoc org-w3m org-rmail org-mhe org-irc org-info org-habit org-gnus gnus-util rmail rmail-loaddefs rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils org-docview doc-view jka-compr image-mode dired-x dired dired-loaddefs org-bibtex bibtex org-bbdb org-agenda org-element avl-tree generator org advice org-macro org-footnote org-pcomplete org-list org-faces org-entities noutline outline easy-mmode org-version ob-shell shell pcomplete ob-R ob-python ob-plantuml ob-org ob-gnuplot ob-ditaa ob-calc calc-store calc-trail calc-ext calc calc-loaddefs calc-macs ob-awk ob-dot ob-maxima ob-latex ob-emacs-lisp ob ob-tangle org-src ob-ref ob-lob ob-table ob-keys ob-exp ob-comint comint ansi-color ring ob-core ob-eval org-compat org-macs org-loaddefs format-spec find-func bbdb-anniv diary-lib diary-loaddefs cal-menu calendar cal-loaddefs bbdb-com crm mailabbrev bbdb bbdb-site timezone bbdb-loaddefs finder-inf tex-site info package epg-config url-handlers url-parse auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs password-cache url-vars ido seq byte-opt gv bytecomp byte-compile cconv edmacro kmacro recentf tree-widget wid-edit easymenu battery time wheatgrass-theme paren savehist saveplace elec-pair desktop frameset cl-loaddefs cl-lib delsel cua-base cus-start cus-load time-date mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core term/tty-colors frame cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite charscript charprop case-table epa-hook jka-cmpr-hook help simple abbrev obarray minibuffer cl-preloaded nadvice loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote dbusbind inotify lcms2 dynamic-setting system-font-setting font-render-setting move-toolbar gtk x-toolkit x multi-tty make-network-process emacs) Memory information: ((conses 16 546388 179405) (symbols 48 103149 168) (miscs 40 14262 10745) (strings 32 162301 27047) (string-bytes 1 5309059) (vectors 16 58177) (vector-slots 8 1837024 256975) (floats 8 410 957) (intervals 56 5710 116) (buffers 992 70)) From unknown Fri Sep 12 10:18:59 2025 X-Loop: help-debbugs@gnu.org Subject: bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames Resent-From: martin rudalics Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 30 Sep 2017 08:33:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 28652 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: "N. Jackson" , 28652@debbugs.gnu.org Received: via spool by 28652-submit@debbugs.gnu.org id=B28652.15067603353879 (code B ref 28652); Sat, 30 Sep 2017 08:33:02 +0000 Received: (at 28652) by debbugs.gnu.org; 30 Sep 2017 08:32:15 +0000 Received: from localhost ([127.0.0.1]:40012 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dyDC3-00010V-GR for submit@debbugs.gnu.org; Sat, 30 Sep 2017 04:32:15 -0400 Received: from mout.gmx.net ([212.227.15.15]:55502) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dyDC1-00010J-Mw for 28652@debbugs.gnu.org; Sat, 30 Sep 2017 04:32:14 -0400 Received: from [192.168.1.100] ([46.125.250.33]) by mail.gmx.com (mrgmx001 [212.227.17.190]) with ESMTPSA (Nemesis) id 0LwrwO-1dIVcE45Sy-016Ntu; Sat, 30 Sep 2017 10:32:07 +0200 Message-ID: <59CF5683.9010807@gmx.at> Date: Sat, 30 Sep 2017 10:32:03 +0200 From: martin rudalics MIME-Version: 1.0 References: <87377573ac.fsf@moondust.localdomain> In-Reply-To: <87377573ac.fsf@moondust.localdomain> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:7m/8pIULDfmX1gU7+hgHxvyGQ03/OWj3hIWNr/FSGkToRUwLEdV Vb8c8wej/0xLCUi4QzbeCjzJZktJH2k7uvBptBs40i4gUUo4xxqfazWFtOHCInEcVZC6rK3 VXdqvgd0kPDavWWr04mM7DnzMdqqznT2FSXRcM0cNd/8pm73Qb9CEcfHBjo/uKn7z/9wiKH jGMkv32QDZkMgvJxcJzzA== X-UI-Out-Filterresults: notjunk:1;V01:K0:0puBbe0I1TY=:aLvlWh2yw5flyIxMK8E0Rk lnJ/3y5OyUxQyM112+PvNBhFzumGPIcBzzRYW7TB/gu91WcuOkcGNy9JiiMYSpHUp/6qFVNw7 hhm/GnmA3sEA1TRX1cJT+gv5iIbm0+213/qt6agSOSVyocT8MGdgZ+LMXYSf8v319r7X7Cbzq l9JIL3jO0UeTpmEZXYN4QvmjM6VryabOt/48PD2sswTj6O6nKhA0AWC42b0Q8/aX1sdiRa+Wc P/LUawvYnOxBEI0MV+mDSmuYOgI0nu/oko2VYMGguMMHtnmuIFUauWCj/UVNfL+nbnPg3Vzui hbcg1aiH8V+gWgtCBrCbCx1eFCJqHJhRAu9dvpviVrx5YO7Nngws/oW4UR7ULJ0+dHDwwCHGn 6jUVvYOruYJbSXIZGoHmHfXYp+/NI5AaEm6ECSwsgrtV4tq6yeehT34F2h2deCAYZGuUWYiAM fax119uQw1hMGU6xgp2rLO+m+C8P0np8lOJh3li5/BxoRaq0foISLzMamACxsOAqVOg5Ss8yq bhv19+99YZrhxNPIXx91O+7YwqvN3Efw1CHDBalZXH7j43VEY/MYp3Brc9iMFlSsoXAPIXbqa M8or5cpcKfzPrbxbG0XJfzW0r347adDEn4cHjLbEI/HkG/tDhcFQF9N0j05atpyyLRDfkpIwF Ba6IfTrH9tLWBWrFSMRHkwopLGrmXWIsVMclTuJRxNd0kKCBeDEsVNLkVVmSE9U2SvrCvBv+D 1aDdmLazqBDzmp5b98tS0m8zj8+EXo+a9agmyal5bcdb6qZlemRl4g/7DPD/ANFC/wCngKGWX T6fhNb065Lvd9iE9KjNJp1toDJom86WDytwuViIsNrzFLvziGU= X-Spam-Score: -2.4 (--) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.4 (--) > In GNU Emacs 26.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.17) > of 2017-09-24 built on moondust.localdomain If this happened for a build of master in between commits c0af83b6ccf2dab9a515dd7f52eb9d4500275ae3 and 2fa19cc5510cdbf00c54991a9959be984dd99fbe it would imply that inhibiting double buffering is also needed even if it did not cause problems like those from bug#28589. But apparently you built from the release branch. So I'm slightly confused. martin From unknown Fri Sep 12 10:18:59 2025 X-Loop: help-debbugs@gnu.org Subject: bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames Resent-From: nljlistbox2@gmail.com (N. Jackson) Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 30 Sep 2017 19:08:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 28652 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: martin rudalics Cc: 28652@debbugs.gnu.org Received: via spool by 28652-submit@debbugs.gnu.org id=B28652.150679847121087 (code B ref 28652); Sat, 30 Sep 2017 19:08:01 +0000 Received: (at 28652) by debbugs.gnu.org; 30 Sep 2017 19:07:51 +0000 Received: from localhost ([127.0.0.1]:41446 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dyN79-0005U3-EF for submit@debbugs.gnu.org; Sat, 30 Sep 2017 15:07:51 -0400 Received: from mail-io0-f177.google.com ([209.85.223.177]:53947) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dyN76-0005Tn-FH for 28652@debbugs.gnu.org; Sat, 30 Sep 2017 15:07:49 -0400 Received: by mail-io0-f177.google.com with SMTP id q11so2124443ioe.10 for <28652@debbugs.gnu.org>; Sat, 30 Sep 2017 12:07:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version; bh=mCWT1C2TKXGoxHRKVR2PVZAlMrfTMqhlNvKssXxif1g=; b=XSTb2tZYnbIa8TiXHp9FnH0ZWQzc4A+Jyx8cK2OfWci6AkjNMFjM36tnQclJxHxxDM 55Z9aDz0mRpk8umAkxiMbqcAr6Vtu7Io52gPrttIyKRSulXb/uCb5C/O8LZrnq2mv2B2 BkivA/8b3NPYs03GMNYds/cHdI35aQWXsow9+BcbxcpepQD1IzuHF9LNs8SWUALRDOEI RqtczJ0+v7Ka6f2J1wWBrHUnb/5Im93OK0cgYEnZtLqgBN3EyETRXHvgTmb1XZWYSM35 k2Kam8IRxIrBjlEcb/bueBDeIohIYTY50/1hcmaYgjS+XqaiW3shbB50ioP+ABUD1lxf xOvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:user-agent:mime-version; bh=mCWT1C2TKXGoxHRKVR2PVZAlMrfTMqhlNvKssXxif1g=; b=FEUbLokXPDBOwer4fwX8ZWsnpiUWFdYWx6+8PXQoxgmKyjdkOx12ELgN28qCk88Jis DxY1YgaGeCTLFsmyeg4pHxLc8JmmszhWF/z7HeP5qWVps9/ci7wlYj1YmWvr9ue01nsU QLTTF+8c4couix2qvjR8Oda4NoOY/sK765MIKhnxmV0CaY59mTp0v5tqTJgOB3KtjOFR MZv6PdppcVyOFCtg8I9LHzloJWzUMH4GCUbv0GUUDlVAgDxmNsI9AsNHgbSPgmeZWtmW uGPt5zT+J58JMMY0p0+cSs5bL7Jupa3AdMNTbyaGhuaLIGDwuHkZ/ECiVUuj91fsLiwY VDyQ== X-Gm-Message-State: AMCzsaV4KHulGNY/U0YSPTDfs/JrMnfvkqMpTzvXaeEgngMzxQJEzDzW OlTbxtPYkwHzC43ndLp2xbN0SA== X-Google-Smtp-Source: AOwi7QCACI+2Dc5ay8+3Yw/BbcTTjp7ns3nt5k4IMaqMuTk3ra8pZIAt2FWS4gGELqVIbZbErnPn8g== X-Received: by 10.107.7.78 with SMTP id 75mr18474260ioh.298.1506798462781; Sat, 30 Sep 2017 12:07:42 -0700 (PDT) Received: from moondust.localdomain.nodomain.none ([72.143.113.194]) by smtp.gmail.com with ESMTPSA id s132sm2925109iod.2.2017.09.30.12.07.41 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 30 Sep 2017 12:07:42 -0700 (PDT) From: nljlistbox2@gmail.com (N. Jackson) References: <87377573ac.fsf@moondust.localdomain> <59CF5683.9010807@gmx.at> Date: Sat, 30 Sep 2017 15:07:41 -0400 In-Reply-To: <59CF5683.9010807@gmx.at> (martin rudalics's message of "Sat, 30 Sep 2017 10:32:03 +0200") Message-ID: <87tvzk0zuq.fsf@moondust.localdomain> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.60 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -2.0 (--) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.0 (--) At 10:32 +0200 on Saturday 2017-09-30, martin rudalics wrote: > >> In GNU Emacs 26.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.17) >> of 2017-09-24 built on moondust.localdomain > > If this happened for a build of master in between commits > > c0af83b6ccf2dab9a515dd7f52eb9d4500275ae3 > > and > > 2fa19cc5510cdbf00c54991a9959be984dd99fbe > > it would imply that inhibiting double buffering is also needed > even if it did not cause problems like those from bug#28589. But > apparently you built from the release branch. So I'm slightly > confused. > > martin Hi Martin, Sorry, I don't know if I can help with your confusion. Yes, I built from the release branch (emacs-26) on 2017-09-24 at commit d93301242f38d3d9aaa55899c07496f0bdecf391. The commits you mention were made 2017-08-27 and 2017-09-26 respectively, but neither of them seem to be in the emacs-26 branch. I am not familiar with bug#28589. N. From unknown Fri Sep 12 10:18:59 2025 X-Loop: help-debbugs@gnu.org Subject: bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames Resent-From: martin rudalics Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 01 Oct 2017 08:25:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 28652 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: "N. Jackson" Cc: 28652@debbugs.gnu.org Received: via spool by 28652-submit@debbugs.gnu.org id=B28652.150684625924971 (code B ref 28652); Sun, 01 Oct 2017 08:25:02 +0000 Received: (at 28652) by debbugs.gnu.org; 1 Oct 2017 08:24:19 +0000 Received: from localhost ([127.0.0.1]:41706 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dyZXv-0006Uh-1c for submit@debbugs.gnu.org; Sun, 01 Oct 2017 04:24:19 -0400 Received: from mout.gmx.net ([212.227.17.22]:54970) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dyZXt-0006UR-MB for 28652@debbugs.gnu.org; Sun, 01 Oct 2017 04:24:18 -0400 Received: from [192.168.1.100] ([46.125.249.11]) by mail.gmx.com (mrgmx102 [212.227.17.168]) with ESMTPSA (Nemesis) id 0LnDof-1dOR301Znx-00hOBJ; Sun, 01 Oct 2017 10:24:11 +0200 Message-ID: <59D0A626.9070207@gmx.at> Date: Sun, 01 Oct 2017 10:24:06 +0200 From: martin rudalics MIME-Version: 1.0 References: <87377573ac.fsf@moondust.localdomain> <59CF5683.9010807@gmx.at> <87tvzk0zuq.fsf@moondust.localdomain> In-Reply-To: <87tvzk0zuq.fsf@moondust.localdomain> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:bwpVM7Nm1FcV9ozs+DPrf167rbjAxVmCiK07frCYp61enENw3gO cOa6l7iG81Kj27LbzVFikH0IJ/ViBCFJDaYcESUz4zWZygYGrJ3yer+rwWMB+AjZV0O0cee nSTJh+tTH/ysfni4mUtsuJwJAwRLvcDWH3jZAbG+0u5iPQxAQICeLUKHZl9gsOBDGwWLf3A paVvUALxA931waI2aSH5g== X-UI-Out-Filterresults: notjunk:1;V01:K0:1tudRi9PkeE=:J7AVt/PnRReLk5UgaGjPVJ f8Hf21WHjrNKo2Vv6j48dp1cCHpP0HY5kuoQ2SlSKmofCorJzk6J2B2C6iA2at8+lIwgrIW7o Zkvwx4WRn0NYwtp81o/dMTm0JNhx/iGYsdCYaaBp+WlWxoaPlD3HItYcaX68FY4Ybw4vPdeay 5Cler6h5HsyIxUXcRN4hEXq3c9sdePzWRTk9zzQmHniT+bvwmKQFSdgtLLD5NXkTsnO5yNraq JLgUZ6DnJB194LPYVhqwUmEtOa8Ck/YvdDLtannKybk1C7x7oQBjFHdUx1FG3Z5X6Oj/VBu4K 6ctout/BS/p37aDhgunmMKCohnLvk4BnnJgCUJvWrKL+rMNa3z2T3pYow7xjvPCGLZBpb49oE 35Lqt9q1A+E+oPvZMKVamxuisLl2dfXEW3wKoYtuGxOqjFUPgJHS1wRCtA9O8wXBJcvONrtui KAr4DZ+9g6QpDOsmHyGWy3u8QQMv8ChsVHGxa8nkXNN5KF/kZIZMCLboQr3qwCBTN8dcvF/Ql 0GHUbC8sdwMX87FRbzS9WGZQEhLKzvf1j6YCz4ypiIseU6GzsqHUzRDeu5WoJm+D3u16PPAlA 6h27xXpZMayIUivZegpYtUr+WDZlcrM3TIC4LchEMkeCPfsDaKABGNQt5nxuKT4echlapFN3D +e4V3AUHoLYdQ5OCxweMaIU7VH4+G82lBzMofFB7ixX0VIFLMBH3s2eg1mzwTuI1iy0TkKSSI tG+0Nm1tzbvZfIErzg5XVBWi/+23YWkqaULdjP3WSag0+UpbsYHPYPlHd5yksAvhz1/Z4oQho dfJmpEK1dWnndYj50IYPZE5VYTwb9ZcIojWRx7gdBXe2V6jsqouW14mtWoVIly7pm7j3pFk X-Spam-Score: 1.3 (+) X-Spam-Report: Spam detection software, running on the system "debbugs.gnu.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: > Yes, I built from the release branch (emacs-26) on 2017-09-24 at > commit d93301242f38d3d9aaa55899c07496f0bdecf391. > > The commits you mention were made 2017-08-27 and 2017-09-26 > respectively, but neither of them seem to be in the emacs-26 > branch. [...] Content analysis details: (1.3 points, 10.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 1.5 RCVD_IN_SORBS_WEB RBL: SORBS: sender is an abusable web server [46.125.249.11 listed in dnsbl.sorbs.net] 0.5 RCVD_IN_SORBS_SPAM RBL: SORBS: sender is a spam source [212.227.17.22 listed in dnsbl.sorbs.net] -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [212.227.17.22 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (rudalics[at]gmx.at) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: 1.3 (+) X-Spam-Report: Spam detection software, running on the system "debbugs.gnu.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: > Yes, I built from the release branch (emacs-26) on 2017-09-24 at > commit d93301242f38d3d9aaa55899c07496f0bdecf391. > > The commits you mention were made 2017-08-27 and 2017-09-26 > respectively, but neither of them seem to be in the emacs-26 > branch. [...] Content analysis details: (1.3 points, 10.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 1.5 RCVD_IN_SORBS_WEB RBL: SORBS: sender is an abusable web server [46.125.249.11 listed in dnsbl.sorbs.net] 0.5 RCVD_IN_SORBS_SPAM RBL: SORBS: sender is a spam source [212.227.17.22 listed in dnsbl.sorbs.net] -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [212.227.17.22 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (rudalics[at]gmx.at) > Yes, I built from the release branch (emacs-26) on 2017-09-24 at > commit d93301242f38d3d9aaa55899c07496f0bdecf391. > > The commits you mention were made 2017-08-27 and 2017-09-26 > respectively, but neither of them seem to be in the emacs-26 > branch. Then this was pure coincidence and you're facing a more general issue with double buffering. martin From debbugs-submit-bounces@debbugs.gnu.org Wed Oct 04 05:34:43 2017 Received: (at control) by debbugs.gnu.org; 4 Oct 2017 09:34:43 +0000 Received: from localhost ([127.0.0.1]:47539 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dzg4h-0005IQ-Fp for submit@debbugs.gnu.org; Wed, 04 Oct 2017 05:34:43 -0400 Received: from eggs.gnu.org ([208.118.235.92]:41458) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dzg4g-0005IA-Bh for control@debbugs.gnu.org; Wed, 04 Oct 2017 05:34:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dzg4Y-0000iA-7d for control@debbugs.gnu.org; Wed, 04 Oct 2017 05:34:37 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD autolearn=disabled version=3.3.2 Received: from fencepost.gnu.org ([2001:4830:134:3::e]:52754) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dzg4Y-0000i4-4E for control@debbugs.gnu.org; Wed, 04 Oct 2017 05:34:34 -0400 Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:4051 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1dzg4X-0004rx-Ff for control@debbugs.gnu.org; Wed, 04 Oct 2017 05:34:33 -0400 Date: Wed, 04 Oct 2017 12:34:20 +0300 Message-Id: <83zi97xnmr.fsf@gnu.org> From: Eli Zaretskii To: control@debbugs.gnu.org Subject: Block X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-Spam-Score: -5.0 (-----) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Eli Zaretskii Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -5.0 (-----) block 24655 by 28652 block 24655 by 28695 thanks From unknown Fri Sep 12 10:18:59 2025 X-Loop: help-debbugs@gnu.org Subject: bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 03 Sep 2021 07:58:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 28652 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: nljlistbox2@gmail.com (N. Jackson) Cc: 28652@debbugs.gnu.org Received: via spool by 28652-submit@debbugs.gnu.org id=B28652.163065584812363 (code B ref 28652); Fri, 03 Sep 2021 07:58:01 +0000 Received: (at 28652) by debbugs.gnu.org; 3 Sep 2021 07:57:28 +0000 Received: from localhost ([127.0.0.1]:42805 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mM44m-0003DL-88 for submit@debbugs.gnu.org; Fri, 03 Sep 2021 03:57:28 -0400 Received: from quimby.gnus.org ([95.216.78.240]:54598) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mM44k-0003D2-Vi for 28652@debbugs.gnu.org; Fri, 03 Sep 2021 03:57:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=uxwhRdqP4R5CSST7fg26d+4S4M3KtaEs8NQupS1Fmb0=; b=JE/Po6YRj/NoG/HCgkjtjaIAKX ATneEUu8P+QgnT+DYcW1+NzfgDR2vFJNMPnqvPRGtcaAEob/eFTuWPkyHcOcg4c8yB58aJAXl8P7A UrlGerr0sxhNUpt+2fiA89k4cvSybtuldsYF33SH2Y8fAVNqlT/md1MRg00qqYSwRhxA=; Received: from [84.212.220.105] (helo=elva) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mM44b-0005GD-Se; Fri, 03 Sep 2021 09:57:20 +0200 From: Lars Ingebrigtsen References: <87377573ac.fsf@moondust.localdomain> Date: Fri, 03 Sep 2021 09:57:17 +0200 In-Reply-To: <87377573ac.fsf@moondust.localdomain> (N. Jackson's message of "Fri, 29 Sep 2017 14:44:43 -0400") Message-ID: <87a6ku2isi.fsf@gnus.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: nljlistbox2@gmail.com (N. Jackson) writes: > When switching between windows in Gnome using Alt-Tab there is > often a bright flash just after switching to an Emacs frame. > > It seems as if the Emacs frame is displayed and then a window of > s [...] Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: -2.3 (--) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) nljlistbox2@gmail.com (N. Jackson) writes: > When switching between windows in Gnome using Alt-Tab there is > often a bright flash just after switching to an Emacs frame. > > It seems as if the Emacs frame is displayed and then a window of > some other application appears for a fraction of a second before > the display settles down to the showing the Emacs frame. > > Because the flash is so quick, I Initially thought the Emacs frame > was being displayed in white before being painted to it's correct > display, but this is not the case. By choosing distinctive colours > or distinctive images in my other applications, I can tell that it > is the window of another application that is flashing up. > > [This flashing might be particularly noticeable on this system as > I use a dark theme in Emacs (Wheatgrass) and most other > application windows are predominantly white. Also I keep all my > Emacs frames and all my other application windows maximised or > full screen (because I have a small display).] (I'm going through old bug reports that unfortunately weren't resolved at the time.) I'm also using Gnome (I'm on Debian bullseye), but I can't see these flashes (I've tried in Emacs 26.1 and Emacs 28) when Alt-Tab-ing between something that has a bright background and Emacs (which has a black background). Are you still seeing this in recent Emacs/Gnome versions? -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no From debbugs-submit-bounces@debbugs.gnu.org Fri Sep 03 03:57:33 2021 Received: (at control) by debbugs.gnu.org; 3 Sep 2021 07:57:33 +0000 Received: from localhost ([127.0.0.1]:42808 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mM44r-0003Df-Gb for submit@debbugs.gnu.org; Fri, 03 Sep 2021 03:57:33 -0400 Received: from quimby.gnus.org ([95.216.78.240]:54612) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mM44q-0003DC-6L for control@debbugs.gnu.org; Fri, 03 Sep 2021 03:57:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Subject:From:To:Message-Id:Date:Sender:Reply-To:Cc: MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=cRP0JRW3dJD2VuIqe77aaIeVjI5qp0jQPUU5NnP/XNw=; b=spZzD/Wnfb2tJPkFfRAacfue9R 9OEyNE7QakASv37QT16wwzLdoyLWdINqVsKpHvfAR7kYjpVLODy7sLPVlhf5T7LyoS2rVYj6DrWYX K6I8mKyQTrSBrBHD3LcsKKY34T8aH4Nk7+i8QpCPwdImfkCk1MIM9Vm4rnVkhBVC5XLA=; Received: from [84.212.220.105] (helo=elva) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mM44h-0005Gs-UG for control@debbugs.gnu.org; Fri, 03 Sep 2021 09:57:26 +0200 Date: Fri, 03 Sep 2021 09:57:23 +0200 Message-Id: <878s0e2isc.fsf@gnus.org> To: control@debbugs.gnu.org From: Lars Ingebrigtsen Subject: control message for bug #28652 X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: tags 28652 + moreinfo quit Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) tags 28652 + moreinfo quit From unknown Fri Sep 12 10:18:59 2025 X-Loop: help-debbugs@gnu.org Subject: bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames Resent-From: "N. Jackson" Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 03 Sep 2021 11:53:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 28652 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo To: Lars Ingebrigtsen Cc: 28652@debbugs.gnu.org Received: via spool by 28652-submit@debbugs.gnu.org id=B28652.16306699644983 (code B ref 28652); Fri, 03 Sep 2021 11:53:01 +0000 Received: (at 28652) by debbugs.gnu.org; 3 Sep 2021 11:52:44 +0000 Received: from localhost ([127.0.0.1]:43187 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mM7kR-0001IJ-NF for submit@debbugs.gnu.org; Fri, 03 Sep 2021 07:52:43 -0400 Received: from mail-qt1-f182.google.com ([209.85.160.182]:43767) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mM7kP-0001I4-JU for 28652@debbugs.gnu.org; Fri, 03 Sep 2021 07:52:41 -0400 Received: by mail-qt1-f182.google.com with SMTP id s15so4234726qta.10 for <28652@debbugs.gnu.org>; Fri, 03 Sep 2021 04:52:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version; bh=HRSs2nuWu+34AYS0Wl+Z3Kp31JhR/u31hYVHT15bZeE=; b=lUFFYWsrcRt8NJSFR0OV62uIIFImGaggDOhc7dJD5IbIqLPSnCVOoyZgY9Ijh60AH1 cGN6z3Qv1gA9dJVznNoHsdDzXdHH9ae25rjXEKtjG5has7ZilziILln4l61pvOgBwhtb GBvH2brE/umOKScPHoiWNywsUC3gx4FmxLGgPKayrh/ZxKyl7QgytA6YRzzIJZ9Eg3K4 TjfuTAd0WcsojgSu0kXtf3T8Exfs40VftF8WnhyNULDR9+rWjHKkzuLfpZVtEwHf3RGU iO1qdcOtjWz5EP/tWAXG85CYfrHD8LA/gS57f/8SNTBde98Af0a4FZ0uL7y3E8OARPKq lw6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:user-agent:mime-version; bh=HRSs2nuWu+34AYS0Wl+Z3Kp31JhR/u31hYVHT15bZeE=; b=t9fp0Jjxa1KjAjg72BVZH016HVEoEUMZZ/Rgk76+m+cPmhUlqaGm+3jZKL0Q5EQx1D UpWDH4f7cy7tsAWL3zRw1aEerPEL5upFurP9Qj7uXi1RdOxDwP3tOMK1paTAPxXaGCWZ JYPlZUYMIHbBJ949rXi1i1guvuMKmB8Kj5bd+d0MDXCNYxyXtOGoqBg4Ny7wZ5UwB13H +65NnZe8rua84f2KEsupavnN38WBQS1ZhD2h5byTihK0iWvGVQJ7tKd03MKFnZH02WCb ljdvVPjIYjx28tfZ8ffghn/BVZF7YFRfCG4nOUFz/Q/rTQAevd1G3V8etbdlWgklgRq5 zpWw== X-Gm-Message-State: AOAM53333dM/saD4K1CLkz8EYDimauSnLgHIOfeh7sYdT4myovDfzMyD T5cpgpdV1QBNdNX2SC8+tPWdEzZn/io= X-Google-Smtp-Source: ABdhPJzmNDhG+h4bhAOcLaZOuO7JFJGxvmHQN81eweI7ZBO/sUvuX0btDUV8EcZT52uyEJGI54qUhQ== X-Received: by 2002:a05:622a:15d2:: with SMTP id d18mr3427914qty.145.1630669955418; Fri, 03 Sep 2021 04:52:35 -0700 (PDT) Received: from moondust.localdomain.nodomain.none (bras-base-toroon474qw-grc-87-174-93-72-167.dsl.bell.ca. [174.93.72.167]) by smtp.gmail.com with ESMTPSA id i67sm3650722qkd.90.2021.09.03.04.52.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Sep 2021 04:52:34 -0700 (PDT) From: "N. Jackson" References: <87377573ac.fsf@moondust.localdomain> <87a6ku2isi.fsf@gnus.org> Date: Fri, 03 Sep 2021 07:52:32 -0400 In-Reply-To: <87a6ku2isi.fsf@gnus.org> (Lars Ingebrigtsen's message of "Fri, 03 Sep 2021 09:57:17 +0200") Message-ID: <87r1e527wf.fsf@moondust.localdomain> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: 0.2 (/) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.8 (/) Hello Lars, At 09:57 +0200 on Friday 2021-09-03, Lars Ingebrigtsen wrote: > > nljlistbox2@gmail.com (N. Jackson) writes: > >> When switching between windows in Gnome using Alt-Tab there is >> often a bright flash just after switching to an Emacs frame. >> >> It seems as if the Emacs frame is displayed and then a window of >> some other application appears for a fraction of a second before >> the display settles down to the showing the Emacs frame. >> >> Because the flash is so quick, I Initially thought the Emacs frame >> was being displayed in white before being painted to it's correct >> display, but this is not the case. By choosing distinctive colours >> or distinctive images in my other applications, I can tell that it >> is the window of another application that is flashing up. >> >> [This flashing might be particularly noticeable on this system as >> I use a dark theme in Emacs (Wheatgrass) and most other >> application windows are predominantly white. Also I keep all my >> Emacs frames and all my other application windows maximised or >> full screen (because I have a small display).] > > (I'm going through old bug reports that unfortunately weren't resolved > at the time.) > > I'm also using Gnome (I'm on Debian bullseye), but I can't see these > flashes (I've tried in Emacs 26.1 and Emacs 28) when Alt-Tab-ing between > something that has a bright background and Emacs (which has a black > background). > > Are you still seeing this in recent Emacs/Gnome versions? No, I haven't seen this problem -- at all -- in quite a few Emacs versions. (Sorry I didn't update the bug report with that information -- I had completely forgotten about the bug.) [The only time I see any "flashing" of any sort in Emacs now is while it starts up and restores my desktop frames and windows. My understanding is that this is expected. (It is also much less frenetic that it was in the past.)] Thank you and best regards, Neil. From unknown Fri Sep 12 10:18:59 2025 X-Loop: help-debbugs@gnu.org Subject: bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 03 Sep 2021 12:08:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 28652 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo To: "N. Jackson" Cc: 28652@debbugs.gnu.org Received: via spool by 28652-submit@debbugs.gnu.org id=B28652.163067087114644 (code B ref 28652); Fri, 03 Sep 2021 12:08:01 +0000 Received: (at 28652) by debbugs.gnu.org; 3 Sep 2021 12:07:51 +0000 Received: from localhost ([127.0.0.1]:43214 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mM7z5-0003o8-Ab for submit@debbugs.gnu.org; Fri, 03 Sep 2021 08:07:51 -0400 Received: from quimby.gnus.org ([95.216.78.240]:57286) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mM7z4-0003nt-0t for 28652@debbugs.gnu.org; Fri, 03 Sep 2021 08:07:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=0XZRCUSVHM3glHK616GWRi2RKelKf6OwWPtmt80V8Ms=; b=JARYq/kaatXFkK7aBKRl+Zh2+4 kOR8V9n/MCtmj/QoXcpZdPXPc7xpS+4TuGk61R9EHplScVmkWX/ZYVRHyvqRu6pE2jq1DAXTooSzd dFvxStKnXngQB7IjYtSyWtTbxendqDaCPtnOgZggjaZFOgqF6FsfycYWUmpoPqBvDZPY=; Received: from [84.212.220.105] (helo=elva) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mM7yv-0001xN-Hu; Fri, 03 Sep 2021 14:07:44 +0200 From: Lars Ingebrigtsen References: <87377573ac.fsf@moondust.localdomain> <87a6ku2isi.fsf@gnus.org> <87r1e527wf.fsf@moondust.localdomain> Date: Fri, 03 Sep 2021 14:07:39 +0200 In-Reply-To: <87r1e527wf.fsf@moondust.localdomain> (N. Jackson's message of "Fri, 03 Sep 2021 07:52:32 -0400") Message-ID: <87sfylx3p0.fsf@gnus.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: "N. Jackson" writes: > No, I haven't seen this problem -- at all -- in quite a few Emacs > versions. > > (Sorry I didn't update the bug report with that information -- I had > completely forgotten about the bug.) Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: -2.3 (--) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) "N. Jackson" writes: > No, I haven't seen this problem -- at all -- in quite a few Emacs > versions. > > (Sorry I didn't update the bug report with that information -- I had > completely forgotten about the bug.) No problem. :-) I'm closing this bug report, then. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no From debbugs-submit-bounces@debbugs.gnu.org Fri Sep 03 08:08:03 2021 Received: (at control) by debbugs.gnu.org; 3 Sep 2021 12:08:03 +0000 Received: from localhost ([127.0.0.1]:43218 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mM7zH-0003ow-IT for submit@debbugs.gnu.org; Fri, 03 Sep 2021 08:08:03 -0400 Received: from quimby.gnus.org ([95.216.78.240]:57300) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mM7zF-0003oL-Uj for control@debbugs.gnu.org; Fri, 03 Sep 2021 08:08:02 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Subject:From:To:Message-Id:Date:Sender:Reply-To:Cc: MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=pr29sbld+FTPuND58nvWnSo4Y1hKL4ec+C+4TWmhqAU=; b=ZGr/tWi7n1ek1aU/rtAmbPysLu ZFlF01OtZlfo0dfKmLae+qpkIhOgfYyOZhZZrF/lkhE3wF50ve5CWEIFVhQEQV/xjazK0zv7BhbLs yVfgt2SMLp8eR7fyvHqk7KpcZYwWyFs/SrJ5K0Hz4kpS6g8bWLnxRNFe/Aq+zwtSgD/A=; Received: from [84.212.220.105] (helo=elva) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mM7z7-0001yE-V9 for control@debbugs.gnu.org; Fri, 03 Sep 2021 14:07:56 +0200 Date: Fri, 03 Sep 2021 14:07:52 +0200 Message-Id: <87r1e5x3on.fsf@gnus.org> To: control@debbugs.gnu.org From: Lars Ingebrigtsen Subject: control message for bug #28652 X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: close 28652 quit Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) close 28652 quit