From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#31987: libGL error Date: Sun, 23 Aug 2020 12:10:13 +0300 Message-ID: <83h7st918q.fsf@gnu.org> References: <83zhzgp7fs.fsf@gnu.org> <877dtpu7mu.fsf@Rainer.invalid> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="12166"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 31987@debbugs.gnu.org To: Achim Gratz Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Aug 23 11:11:10 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 1k9m1t-00034K-Ns for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 23 Aug 2020 11:11:09 +0200 Original-Received: from localhost ([::1]:40902 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k9m1s-00077Z-ON for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 23 Aug 2020 05:11:08 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:54810) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k9m1m-00077N-5m for bug-gnu-emacs@gnu.org; Sun, 23 Aug 2020 05:11:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:40506) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k9m1l-0005rP-SK for bug-gnu-emacs@gnu.org; Sun, 23 Aug 2020 05:11:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1k9m1l-0005Gv-O3 for bug-gnu-emacs@gnu.org; Sun, 23 Aug 2020 05:11:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 23 Aug 2020 09:11:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 31987 X-GNU-PR-Package: emacs Original-Received: via spool by 31987-submit@debbugs.gnu.org id=B31987.159817383320213 (code B ref 31987); Sun, 23 Aug 2020 09:11:01 +0000 Original-Received: (at 31987) by debbugs.gnu.org; 23 Aug 2020 09:10:33 +0000 Original-Received: from localhost ([127.0.0.1]:52049 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k9m1I-0005Fw-I3 for submit@debbugs.gnu.org; Sun, 23 Aug 2020 05:10:33 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:44658) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k9m1G-0005Fi-VI for 31987@debbugs.gnu.org; Sun, 23 Aug 2020 05:10:31 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:51843) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k9m19-0005eA-2m; Sun, 23 Aug 2020 05:10:23 -0400 Original-Received: from [176.228.60.248] (port=1209 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1k9m15-0002Ef-RN; Sun, 23 Aug 2020 05:10:21 -0400 In-Reply-To: <877dtpu7mu.fsf@Rainer.invalid> (message from Achim Gratz on Sun, 23 Aug 2020 09:46:33 +0200) 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:186030 Archived-At: > From: Achim Gratz > Date: Sun, 23 Aug 2020 09:46:33 +0200 > > Stefan Kangas writes: > >>> Get the following error message when starting emacs: > >>> libGL error: required WGL extension WGL_ARB_multisample is missing > >> > >> Searching for that message finds this: > >> > >> https://www.mail-archive.com/cygwin@cygwin.com/msg157465.html > > > > So is this worth adding to PROBLEMS or is it notabug? > > It's a problem with certain (Windows) video card drivers that implement > only a subset of some optional GL API bundles. In this particular case > libGL checked for some specific feature and was assuming the existence > of another from the same API bundle that the driver then didn't actually > provide, that detection has since been fixed to check all features > separately AFAIK. As said in the message linked to, you can always use > software rendering as a fallback. Thanks. So you think it would be good to have this in PROBLEMS?