From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#61667: 29.0.60; Failure to redisplay Date: Sat, 04 Mar 2023 08:01:20 +0800 Message-ID: <87lekdwfjj.fsf@yahoo.com> References: <04d7cb31-684c-07c0-ee7b-503514fc1a85@yandex.ru> <8716b41c97839d6a8b87@heytings.org> <7fee18a7-3307-b6de-1428-ae17d51c85af@yandex.ru> <9ac9271f1ee55a9b8bbf@heytings.org> <87a60y13ou.fsf@yahoo.com> <674e150e-fcbe-7d67-962e-214cfaec2ca0@yandex.ru> <875ybl1dii.fsf@yahoo.com> <2b249c97-db63-34e1-80c2-0c898005e31f@yandex.ru> <87zg8xyt0m.fsf@yahoo.com> <25c817d9-f969-8c24-6ed4-9b35fd6f27ad@yandex.ru> <87sfeozn8f.fsf@yahoo.com> <87o7pczlsq.fsf@yahoo.com> <43d50d6a-1eb0-cd42-0479-3f9d4d74904a@yandex.ru> <87ilfkyorf.fsf@yahoo.com> <8f4df0d7-eb1a-379a-db03-314f2c93743b@yandex.ru> <87a60vztad.fsf@yahoo.com> <83ttz3eig2.fsf@gnu.org> <721a1bb0-c1c6-70a1-02a8-408445e19fde@yandex.ru> Reply-To: Po Lu Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; 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Hermes SMTP Server) with ESMTPA ID 097d4ed52487771aba1d8d02536d01f5; Sat, 04 Mar 2023 00:01:25 +0000 (UTC) In-Reply-To: <721a1bb0-c1c6-70a1-02a8-408445e19fde@yandex.ru> (Dmitry Gutov's message of "Fri, 3 Mar 2023 16:28:14 +0200") X-Mailer: WebService/1.1.21221 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:257241 Archived-At: Dmitry Gutov writes: > On 02/03/2023 09:11, Eli Zaretskii wrote: >>> From: Po Lu >>> Cc:61667@debbugs.gnu.org, Gregory Heytings, Eli >>> Zaretskii >>> Date: Thu, 02 Mar 2023 12:11:38 +0800 >>> >>> Yes. It sure sounds like a bug in the GNOME compositor now. >>> Have you tried disabling GNOME Shell extensions one by one? Maybe one >>> of them is responsible for this. >> Whether or not we find some workarounds, I think we should add an >> entry to PROBLEMS about this. > > Speaking of disabling double buffering as a workaround: I went back to > my old bug reports related to flickering, which double-buffering aimed > to fix. > > I recompiled the GTK3 build without xdbe -- and still couldn't > reproduce neither bug#12363 (which was admittedly filed on a Windows > system), nor bug#16621. Even with the same font (Fira Code). > > Not sure what changed -- maybe better screen resolution, or a faster > machine. And the DE, libraries' versions, etc. > > But there is a persistent glitch: when the window configuration > changes, 1 or 2 vertical bars often flash: > > https://a.uguu.se/iYTlOftH.mp4 (with emacs -Q) > > https://a.uguu.se/YdDWpMid.mp4 (with my config but with tool-bar and > scroll-bar modes enabled) > > scroll-bar-mode on seems to be required to reproduce this. This is expected: moving the scroll bar causes exposures, which can cause flickering. That's the problem double buffering is supposed to fix.