From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Achim Gratz Newsgroups: gmane.emacs.bugs Subject: bug#31987: libGL error Date: Sun, 23 Aug 2020 09:46:33 +0200 Organization: Linux Private Site Message-ID: <877dtpu7mu.fsf@Rainer.invalid> References: <83zhzgp7fs.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31549"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) To: 31987@debbugs.gnu.org Cancel-Lock: sha1:kW4Uyu6tbxGkF+nDub4ef7Ghkc4= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Aug 23 09:47:14 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 1k9kif-00084Y-Vg for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 23 Aug 2020 09:47:13 +0200 Original-Received: from localhost ([::1]:42370 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k9kie-0006jw-Rj for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 23 Aug 2020 03:47:12 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:42506) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k9kiU-0006j4-4q for bug-gnu-emacs@gnu.org; Sun, 23 Aug 2020 03:47:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:40465) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k9kiT-0005yn-SH for bug-gnu-emacs@gnu.org; Sun, 23 Aug 2020 03:47:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1k9kiT-0003FI-Nt for bug-gnu-emacs@gnu.org; Sun, 23 Aug 2020 03:47:01 -0400 X-Loop: help-debbugs@gnu.org In-Reply-To: Resent-From: Achim Gratz Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 23 Aug 2020 07:47:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 31987 X-GNU-PR-Package: emacs X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.159816880812456 (code B ref -1); Sun, 23 Aug 2020 07:47:01 +0000 Original-Received: (at submit) by debbugs.gnu.org; 23 Aug 2020 07:46:48 +0000 Original-Received: from localhost ([127.0.0.1]:52011 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k9kiG-0003Eq-E4 for submit@debbugs.gnu.org; Sun, 23 Aug 2020 03:46:48 -0400 Original-Received: from lists.gnu.org ([209.51.188.17]:50210) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k9kiE-0003Ei-2K for submit@debbugs.gnu.org; Sun, 23 Aug 2020 03:46:46 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:42386) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k9kiD-0006hK-QR for bug-gnu-emacs@gnu.org; Sun, 23 Aug 2020 03:46:45 -0400 Original-Received: from static.214.254.202.116.clients.your-server.de ([116.202.254.214]:53760 helo=ciao.gmane.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k9kiB-0005wI-RY for bug-gnu-emacs@gnu.org; Sun, 23 Aug 2020 03:46:45 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1k9ki5-0007Pl-Rd for bug-gnu-emacs@gnu.org; Sun, 23 Aug 2020 09:46:37 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geb-bug-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/23 03:46:39 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action 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:186028 Archived-At: 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. Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ Wavetables for the Terratec KOMPLEXER: http://Synth.Stromeko.net/Downloads.html#KomplexerWaves