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Message-ID:	<37e18cbb-de50-4310-bdbf-9c84b95d9d4b@lupinlodge.com>
Date:	Mon, 27 Jan 2025 13:01:13 -0800
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To:	cygwin AT cygwin DOT com
Subject:	X11 does not start up <winMultiWindowXMsgProc - Fatal error 1 on xcb
	connection>
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From:	Charles Perkins via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Charles Perkins <charliep AT lupinlodge DOT com>
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X-MIME-Autoconverted:	from base64 to 8bit by delorie.com id 50RL2WIZ2057557

Hello folks,

I have had multiple problems trying to install X11 on Cygwin.   I am 
running Cygwin on Windows 11 on my Asus VivoBook.

The initial X11 installation showed Error 3 for the sub-installation of 
xinit.

Looking through previous answers, I found a suggestion to run the following:

  CYGWINFORALL=-A /bin/sh -vx /etc/postinstall/xinit.sh   (**)

This failed with the following error:

    mkshortcut: Saving "/cygdrive/c/ProgramData/Microsoft/Windows/Start
    Menu/Programs/Cygwin-X/User .xsession script.lnk" failed; does the
    target directory exist?

Later, after quite a bit of rigamarole involving "takeown" and "icacls", 
I was able to run (**) without any error message.

So then I tried startxwin, with the following error:

    winMultiWindowXMsgProc - Fatal error 1 on xcb connection


Here is the complete output of startxwin:

========================================================================
Welcome to the XWin X Server
Vendor: The Cygwin/X Project
Release: 1.21.1.12
OS: CYGWIN_NT-10.0-26100 DESKTOP-8SDO6BS 3.5.5-1.x86_64 2024-12-20 16:19 
UTC x86_64
OS: Windows 10  [Windows NT 10.0 build 26100] x64
Package: version 21.1.12-1 built 2024-04-14

XWin was started with the following command line:

/usr/bin/XWin :0 -multiwindow -auth
  /home/charliep/.serverauth.460

(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 120 y 120
LoadPreferences: /home/charliep/.XWinrc not found
LoadPreferences: Loading /etc/X11/system.XWinrc
LoadPreferences: Done parsing the configuration file...
winDetectSupportedEngines - RemoteSession: no
winDetectSupportedEngines - DirectDraw4 installed, allowing ShadowDDNL
winDetectSupportedEngines - Returning, supported engines 00000005
winSetEngine - Multi Window or Rootless => ShadowGDI
winScreenInit - Using Windows display depth of 32 bits per pixel
winAllocateFBShadowGDI - Creating DIB with width: 1920 height: 1080 
depth: 32
winFinishScreenInitFB - Masks: 00ff0000 0000ff00 000000ff
winInitVisualsShadowGDI - Masks 00ff0000 0000ff00 000000ff BPRGB 8 d 24 
bpp 32
MIT-SHM extension disabled due to lack of kernel support
XFree86-Bigfont extension local-client optimization disabled due to lack 
of shared memory support in the kernel
glWinSelectGLimplementation: Loaded 'cygnativeGLthunk.dll'
(II) AIGLX: Testing pixelFormatIndex 1
GL_VERSION:     4.6.0 - Build 30.0.100.9864
GL_VENDOR:      Intel
GL_RENDERER:    Intel(R) UHD Graphics
(II) GLX: enabled GLX_SGI_make_current_read
(II) GLX: enabled GLX_SGI_swap_control
(II) GLX: enabled GLX_MESA_swap_control
(II) GLX: enabled GLX_SGIX_pbuffer
(II) GLX: enabled GLX_ARB_multisample
(II) GLX: enabled GLX_SGIS_multisample
(II) GLX: enabled GLX_ARB_fbconfig_float
(II) GLX: enabled GLX_EXT_fbconfig_packed_float
(II) GLX: enabled GLX_ARB_create_context
(II) GLX: enabled GLX_ARB_create_context_profile
(II) GLX: enabled GLX_ARB_create_context_robustness
(II) GLX: enabled GLX_EXT_create_context_es2_profile
(II) GLX: enabled GLX_ARB_framebuffer_sRGB
(II) AIGLX: enabled GLX_MESA_copy_sub_buffer
(II) 112 pixel formats reported by wglGetPixelFormatAttribivARB
(II) 76 fbConfigs
(II) ignored pixel formats: 0 not OpenGL, 0 unknown pixel type, 36 
unaccelerated
(II) GLX: Initialized Win32 native WGL GL provider for screen 0
winPointerWarpCursor - Discarding first warp: 960 540
(--) 16 mouse buttons found
(--) Setting autorepeat to delay=500, rate=31
(--) Windows keyboard layout: "00000409" (00000409) "US", type 7
(--) Found matching XKB configuration "English (USA)"
(--) Model = "pc105" Layout = "us" Variant = "none" Options = "none"
Rules = "base" Model = "pc105" Layout = "us" Variant = "none" Options = 
"none"
winInitMultiWindowWM - DISPLAY=:0.0
winMultiWindowXMsgProc - DISPLAY=:0.0
winInitMultiWindowWM - xcb_connect () returned and successfully opened 
the display.
winClipboardThreadProc - DISPLAY=:0.0
winProcEstablishConnection - winInitClipboard returned.
winClipboardProc - xcb_connect () returned and successfully opened the 
display.
winMultiWindowXMsgProc - xcb_connect() returned and successfully opened 
the display.
Using Composite redirection
xinit: connection to X server lost

waiting for X server to shut down winClipboardProc - 
winClipboardFlushWindowsMessageQueue trapped WM_QUIT message, exiting 
main loop.
winMultiWindowXMsgProc - Fatal error 1 on xcb connection
winDeinitMultiWindowWM - Noting shutdown in progress
(II) Server terminated successfully (0). Closing log file.
==================================================================================

Thanks in advance for any help you can provide.  If I seem clueless, 
that's pretty much how I feel right now -- sorry!


Sincerely,
Charlie P.

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