DMARC-Filter:	OpenDMARC Filter v1.4.2 delorie.com 566Gp2UG3491755
Authentication-Results:	delorie.com; dmarc=pass (p=none dis=none) header.from=cygwin.com
Authentication-Results:	delorie.com; spf=pass smtp.mailfrom=cygwin.com
DKIM-Filter:	OpenDKIM Filter v2.11.0 delorie.com 566Gp2UG3491755
Authentication-Results:	delorie.com;
	dkim=pass (1024-bit key, unprotected) header.d=cygwin.com header.i=@cygwin.com header.a=rsa-sha256 header.s=default header.b=qfkSAdOz
X-Recipient:	archive-cygwin AT delorie DOT com
DKIM-Filter:	OpenDKIM Filter v2.11.0 sourceware.org EF1953858405
DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com;
	s=default; t=1751820660;
	bh=4mnSO7nv2rgSsqR0SZEX2L+KcpvC9S9dwIMd63rcAB0=;
	h=Date:Subject:To:References:Cc:In-Reply-To:List-Id:
	List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe:
	From:Reply-To:From;
	b=qfkSAdOz5udRB3mToC9hS9YW4IWS1/qvJRZXM7XSx5snIhnSQ1aIyxz1IWML5Y79I
	0f0T7ma7LJ5HN/5emdkiyKGgkDEJvLoFB9O9bcUPcF/0qlu8gzXvDaHJ1eugEWvqZ0
	9rRizqgJr64vqfU8EGq/eCN+xgJjNJWwLfIj7ptE=
X-Original-To:	cygwin AT cygwin DOT com
Delivered-To:	cygwin AT cygwin DOT com
DMARC-Filter:	OpenDMARC Filter v1.4.2 sourceware.org CB2373858D29
ARC-Filter:	OpenARC Filter v1.0.0 sourceware.org CB2373858D29
ARC-Seal:	i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1751820636; cv=none;
	b=hgJYLs/z5EMYNBhMZqfKqULzwI/XfM9UcMyqL5syOOQjZgLedqDBfKLhrHrD9/yZzN+Qa9lkxAeiz5Y2WjtW/RV7e3z1LkFkrEFbtBMJllwxKqZydYBd16P0kNMuKCVe4fLzzL3uhxEfeJI0UPxbU94u6T2K3UhF1ZjURb/0el0=
ARC-Message-Signature:	i=1; a=rsa-sha256; d=sourceware.org; s=key;
	t=1751820636; c=relaxed/simple;
	bh=iisdrj/eT7+EFAQbAwrKsvG5S3rGUcytLAgf87w7zEo=;
	h=Message-ID:Date:MIME-Version:Subject:To:From;
	b=M9klVnIerfP8YBLQzKCcFi8lJbIhj/ldDPPfsnNRnItD3auJOhDw/Xf2EnK/CGgxU1ju11Dy9MWaXbJ3O/XVSD/46XRH6zQDnq2RasgxiP7KTh17UI+lKMBf2xVcE95Fa8EKCR4L+JNgvNkSwULWhX6WGcipfn9wNhhEgBf4Mp4=
ARC-Authentication-Results:	i=1; server2.sourceware.org
DKIM-Filter:	OpenDKIM Filter v2.11.0 sourceware.org CB2373858D29
X-SNCR-Rigid:	6864C1EC0075BB00
X-Originating-IP:	[86.139.167.63]
X-OWM-Source-IP:	86.139.167.63
X-OWM-Env-Sender:	jon DOT turney AT dronecode DOT org DOT uk
X-RazorGate-Vade:	gggruggvucftvghtrhhoucdtuddrgeeffedrtdefgddvleeghecutefuodetggdotefrodftvfcurfhrohhfihhlvgemuceutffkvffkuffjvffgnffgvefqofdpqfgfvfenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepkfffgggfuffvfhfhvegjtgfgsehtjeertddtvdejnecuhfhrohhmpeflohhnucfvuhhrnhgvhicuoehjohhnrdhtuhhrnhgvhiesughrohhnvggtohguvgdrohhrghdruhhkqeenucggtffrrghtthgvrhhnpedtteetgfdvjedvieehgeetjedtjeehvdfgvdeuudekgeeuudekudeftedugfdujeenucffohhmrghinhepfhhrvggvuggvshhkthhophdrohhrghenucfkphepkeeirddufeelrdduieejrdeifeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhephhgvlhhopegludelvddrudeikedruddruddtlegnpdhinhgvthepkeeirddufeelrdduieejrdeifedpmhgrihhlfhhrohhmpehjohhnrdhtuhhrnhgvhiesughrohhnvggtohguvgdrohhrghdruhhkpdhrvghvkffrpehhohhsthekiedqudefledqudeijedqieefrdhrrghnghgvkeeiqddufeelrdgsthgtvghnthhrrghlphhluhhsrdgtohhmpdgruhhthhgpuhhsvghrpehjohhnthhurhhnvgihsegsthhinhhtvghrnhgvthdrtghomhdpghgvohfkrfepifeupdfovfetjfhoshhtpegsthhprhgurhhgohdtuddvpdhnsggprhgtphhtthhopedvpdhr
	tghpthhtoheptgihghifihhnsegthihgfihinhdrtghomhdprhgtphhtthhopehjjhhrvghishgvrhhtsegrlhhumhdrmhhithdrvgguuh
X-RazorGate-Vade-Verdict:	clean 0
X-RazorGate-Vade-Classification:	clean
X-VadeSecure-score:	verdict=clean score=0/300, class=clean
Message-ID:	<e62dc3d8-6130-4654-939e-b158d131916f@dronecode.org.uk>
Date:	Sun, 6 Jul 2025 17:50:28 +0100
MIME-Version:	1.0
User-Agent:	Mozilla Thunderbird
Subject:	Re: winClipboardFlushXEvents - OpenClipboard () failed: 00000005
To:	Jim Reisert AD1C <jjreisert AT alum DOT mit DOT edu>
References:	<CAK-n8j5obEsc2KotNWQL47tRJDzdRaEQUOkbWS56861f7CUJxw AT mail DOT gmail DOT com>
Cc:	cygwin AT cygwin DOT com
In-Reply-To:	<CAK-n8j5obEsc2KotNWQL47tRJDzdRaEQUOkbWS56861f7CUJxw@mail.gmail.com>
X-BeenThere:	cygwin AT cygwin DOT com
X-Mailman-Version:	2.1.30
List-Id:	General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Unsubscribe:	<https://cygwin.com/mailman/options/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=unsubscribe>
List-Archive:	<https://cygwin.com/pipermail/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe:	<https://cygwin.com/mailman/listinfo/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
From:	Jon Turney via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Errors-To:	cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com
Sender:	"Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>

On 05/07/2025 00:39, Jim Reisert AD1C via Cygwin wrote:
> I do a lot of copying/pasting between Windows and Cygwin-X.  If I try
> to copy too much, the server will crash.  The symptom is that
> copy/paste no longer works (in either direction).  I can still start

Hmm... so when you say "crash", you don't mean "exit, abnormally"?

It just keeps on running, but cut and past doesn't work?

> new terms (copy/paste still does not work), but ultimately, I have to
> kill the X server, delete the lock file, and restart it.
> 
> This is what that Xwin.log looks like when this happens:
> 
> [109491.656] winInitMultiWindowWM - xcb_connect () returned and
> successfully opened the display.
> [109491.656] winClipboardProc - xcb_connect () returned and
> successfully opened the display.
> [109491.671] Using Composite redirection
> [109530.609] OS has icon alpha channel support: yes
> [111304.578] winClipboardFlushXEvents - OpenClipboard () failed: 00000005
> [114502.656] winClipboardFlushXEvents - OpenClipboard () failed: 00000005
> [114502.656] winClipboardFlushXEvents - OpenClipboard () failed: 00000005
> [etc]

Sigh.

This code is old enough to shave and still doesn't work properly :(

In the past, these problems have sometimes been caused by "clipboard 
helper/manager" type Windows programs.  You might want to check if 
you're running such a thing and see if stopping it makes a difference.

> cygcheck.out is attached, along with a log file showing the problem.
> 
> I'd love to know if there is a solution or work-around for this.
> Oftentimes, I have several different Emacs buffers open and thus need
> to close each one before restarting the server (then remember where I
> was).

As a workaround, you can try:

* start the X server with the '-noclipboard' option
* run 'xwinclip'

(this is the same code which is built into a thread in the server, but 
built as a standalone tool; if it also gets wedged, you can just kill 
and restart it, rather than the X server and everything connected to it)

The whole thing [1] really isn't very large, so finding what's wrong 
with it should be easy, right? :)

[1] 
https://gitlab.freedesktop.org/xorg/xserver/-/tree/master/hw/xwin/winclipboard


-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple

- Raw text -