X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:to:from:subject:message-id:date:mime-version
	:content-type:content-transfer-encoding; q=dns; s=default; b=bt8
	Iqf4Jx0iujGDf/sZ9yVFlk0+m31rY5EQLu5ckuWLpbQSY+OqZxGqzMF64Khs0AoT
	ALgGzO0wzUIykTZcGQuEZE5Bq0eI86hvcmkd1Y0eCHhfUG1mj3Y4ff/XfSSp7K4D
	aZUL5QVQSi2ctT/WbWcy4NGI5whjmcw1JU6wdxxU=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:to:from:subject:message-id:date:mime-version
	:content-type:content-transfer-encoding; s=default; bh=SNIsFVN2Z
	Hi1GGt67uVuWA3BLV0=; b=lG3X2Sgi123IcX5DCt0fp3Hj0wnV6UibCVbn0enZ2
	+1rWzkp0b+/7vvr0Bx7Mid+ye5+iiPLL8AuHlH39LdsaaKmL8X/ggEpZdgJy53y/
	seEj9gjdHMa3XrJ+EJOsn5JTj0PShZd/XSnxxQ6hnSQjXZnrib6JLYp+JhY8Ga35
	KY=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Virus-Found:	No
X-Spam-SWARE-Status:	No, score=-2.6 required=5.0 tests=BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 spammy=H*M:yandex, H*F:D*yandex.ru, icon, HAuthentication-Results:header.i
X-HELO:	forward15j.cmail.yandex.net
Authentication-Results:	smtp3j.mail.yandex.net; dkim=pass header.i=@yandex.ru
X-Yandex-Suid-Status:	1 0
To:	cygwin AT cygwin DOT com
From:	Leon Meier <Leon DOT Meier AT yandex DOT ru>
Subject:	How to debug XWin starting only sometimes?
Message-ID:	<3f551e8d-9f2a-27d4-119f-13f4a7ddb155@yandex.ru>
Date:	Mon, 1 May 2017 17:19:59 +0200
User-Agent:	Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0
MIME-Version:	1.0

When starting "XWin Server" though the windows shortcut, it sometimes 
won't start; other times it will.

The shortcut command line is

C:\cygwin64\bin\run.exe --quote /usr/bin/bash.exe -l -c "cd; exec 
/usr/bin/startxwin"

which is executed in directory cygwin64.

The current contents of .xsession-errors is

[
** Message: couldn't connect to dbus session bus: Verbindung ist geschlossen
** Message: couldn't connect to dbus session bus: Verbindung ist geschlossen
** Message: couldn't connect to dbus session bus: Verbindung ist geschlossen
Socket /tmp/fam-admin/fam- has wrong permissions
]

As you can imagine, the directory /tmp/fam-admin contains no files at all.

Starting startxwin from mintty actually succeeds (always or at least 
more often than starting through the shortcut).

The only suspicious lines found in /var/log/xwin/XWin.0.log are

[  1106.609] pixelFormat 36: has 1 overlay, 0 underlays which aren't 
currently handledgetAttrValue failed to find attr 0x2039, using default 
value 0
[  1106.609] getAttrValue failed to find attr 0x203b, using default value 0
...
[  1106.609] pixelFormat 71: has 1 overlay, 0 underlays which aren't 
currently handledgetAttrValue failed to find attr 0x2039, using default 
value 0
[  1106.609] getAttrValue failed to find attr 0x203b, using default value 0
...
[  1294,453] SetupSysMenu: GetSystemMenu() failed for HWND 0x2027a
[  1309,640] IsOverrideRedirect: Failed to get window attributes
[  1311,687] OS has icon alpha channel support: yes
[  1353,109] SetupSysMenu: GetSystemMenu() failed for HWND 0x50374
[  1359,250] SetupSysMenu: GetSystemMenu() failed for HWND 0x50330
[  1367,859] winTopLevelWindowProc - WM_DESTROY - WM_WM_KILL
[  1378,000] SetupSysMenu: GetSystemMenu() failed for HWND 0x1c0466


In /var/log/xwin/XWin.0.log.old we see

[   775,375] winMultiWindowXMsgProc - Fatal error 1 on xcb connection

In /var/log/xwin/XWin.1.log we see

[  1523,000] winMultiWindowXMsgProc - Fatal error 1 on xcb connection

In /var/log/xwin/XWin.1.log.old we see

[  1583,187] winMultiWindowXMsgProcErrorHandler - ERROR: BadMatch 
(invalid parameter attributes)

Any hints who may be the culprit and/or how to debug the issue?

Thanks in advance,
Leon

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

- Raw text -