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Date: Thu, 24 Aug 2023 17:36:32 -0400
To: cygwin AT cygwin DOT com
Subject: xserver failing on new install - fatal error on xcb connection
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From: Adam Rosi-Kessel via Cygwin <cygwin AT cygwin DOT com>
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I recently installed a fresh copy of cygwin64 on a new Windows 10 box. xserver starts but randomly fails after a few minutes with:

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.

Any pointers for how to troubleshoot?

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