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Date:	Mon, 18 May 2026 10:41:10 +0200 (CEST)
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Message-ID:	<136722204.3589176.1779093670625@mail1.libero.it>
Subject:	X server doesn't start
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From:	Fabio Rossi via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Fabio Rossi <rossi DOT f AT inwind DOT it>
Sender:	"Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>

I had installed Cygwin with X server on a Windows 10 machine without problems. Now I have converted the same machine to Windows 11 but not I am not able to run X server anymore. I get no meaningful errors. I have tried also reinstalling Cygwin with the same result. Here is the output when running the simplest case:

$ XWin
Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 1.21.1.21
OS: CYGWIN_NT-10.0-26200 XXXXXX 3.6.9-1.x86_64 2026-04-21 15:46 UTC x86_64
OS: Windows 10  [Windows NT 10.0 build 26200] x64
Package: version 21.1.21-1 built 2026-01-16

winInitializeScreenDefaults - primary monitor w 1024 h 768
(--) Windows reports only 2 mouse buttons, defaulting to -emulate3buttons
XWin was started with the following command line:

XWin

(II) xorg.conf is not supported
(II) See http://x.cygwin.com/docs/faq/cygwin-x-faq.html for more information
winUpdateDpi - primary monitor native DPI x 96 y 96
LoadPreferences: /home/pcad/.XWinrc not found
LoadPreferences: Loading /etc/X11/system.XWinrc
LoadPreferences: Done parsing the configuration file...
winDetectSupportedEngines - RemoteSession: yes
winDetectSupportedEngines - DirectDraw4 installed, allowing ShadowDDNL
winDetectSupportedEngines - Returning, supported engines 00000005

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