X2Go Bug report logs - #28
Xfixes issues with Ubuntu precise and above

version graph

Package: x2goserver; Maintainer for x2goserver is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goserver is src:x2goserver.

Reported by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Date: Fri, 14 Sep 2012 14:38:45 UTC

Severity: normal

Tags: confirmed

Found in version 3.1.1.3

Done: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Bug is archived. No further changes may be made.

Full log


Message #31 received at control@bugs.x2go.org (full text, mbox, reply):

Received: (at control) by bugs.x2go.org; 9 Jan 2013 15:03:51 +0000
From mike.gabriel@das-netzwerkteam.de  Wed Jan  9 16:03:51 2013
Received: from freya.das-netzwerkteam.de (freya.das-netzwerkteam.de [88.198.48.199])
	by ymir (Postfix) with ESMTPS id 63DB05DB0A;
	Wed,  9 Jan 2013 16:03:51 +0100 (CET)
Received: from grimnir.das-netzwerkteam.de (grimnir.das-netzwerkteam.de [78.46.204.98])
	by freya.das-netzwerkteam.de (Postfix) with ESMTPS id 411A5D8D;
	Wed,  9 Jan 2013 16:03:51 +0100 (CET)
Received: from localhost (localhost [127.0.0.1])
	by grimnir.das-netzwerkteam.de (Postfix) with ESMTP id 1A6AC3BA08;
	Wed,  9 Jan 2013 16:03:51 +0100 (CET)
X-Virus-Scanned: Debian amavisd-new at grimnir.das-netzwerkteam.de
Received: from grimnir.das-netzwerkteam.de ([127.0.0.1])
	by localhost (grimnir.das-netzwerkteam.de [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id u2lBAv60TRfZ; Wed,  9 Jan 2013 16:03:51 +0100 (CET)
Received: from localhost (localhost [127.0.0.1])
	by grimnir.das-netzwerkteam.de (Postfix) with ESMTP id EEDD23BA34;
	Wed,  9 Jan 2013 16:03:50 +0100 (CET)
Received: from localhost (localhost [127.0.0.1])
	by grimnir.das-netzwerkteam.de (Postfix) with ESMTP id D2B0F3BA08;
	Wed,  9 Jan 2013 16:03:50 +0100 (CET)
X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on
	grimnir.das-netzwerkteam.de
X-Spam-Flag: NO
X-Spam-Status: No, hits=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00
	autolearn=ham version=3.3.1 running as userid=
X-Spam-Level: 
X-Spam-Bayes-Score: 0.0000
Received: by grimnir.das-netzwerkteam.de (Postfix, from userid 33)
	id 7484E3BA34; Wed,  9 Jan 2013 16:03:50 +0100 (CET)
Received: from 79-175-142-46.pool.kielnet.net
 (79-175-142-46.pool.kielnet.net [46.142.175.79]) by
 mail.das-netzwerkteam.de (Horde Framework) with HTTP; Wed, 09 Jan 2013
 16:03:50 +0100
Message-ID: <20130109160350.53203djxdypttm8m@mail.das-netzwerkteam.de>
X-Priority: 3 (Normal)
Date: Wed, 09 Jan 2013 16:03:50 +0100
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: 28@bugs.x2go.org
Cc: control@bugs.x2go.org
Subject: Xfixes issues with Ubuntu precise and above
MIME-Version: 1.0
Content-Type: multipart/signed;
 boundary="=_35o3f94r34ye";
 protocol="application/pgp-signature";
 micalg="pgp-sha1"
Content-Transfer-Encoding: 7bit
User-Agent: Internet Messaging Program (IMP) H3 (4.3.4)
[Message part 1 (text/plain, inline)]
unarchive #28
reopen #28
retitle #28 Xfixes issues with Ubuntu precise and above
thanks

Re-opening this issue as it is not 100% solved and understood...

The situation is: with extensions XFIXES enabled in nxagent/x2goagent  
we observe KDE crashes on Ubuntu precise and above. The crashes happen  
in kwin.

The problem could be tracked down to some problems in libxfixes. The  
change must have been between libxfixes from oneiric and libxfixes  
from precise.

On IRC I wrote this about the observed issue:

15:48 < sunweaver> siretart: I might have found the libxfixes issue  
with libxfixes since precise...
15:48 < sunweaver> at least I have several question marks...
15:49 < sunweaver> the xserver-xorg src package in precise has a patch  
named: 500_pointer_barrier_thresholds.diff
15:50 < sunweaver> this patches in xfixes v6 code into the xfixes v5 extension
15:51 < sunweaver> in that patch you can also see that the xfixes  
extension version is also incremented (5 -> 6)
15:52 < sunweaver> the libxfixes 1:5.0-4ubuntu4 and the package  
x11proto-fixes-dev 1:5.0-2ubuntu1 package also have patches for this  
improvement: both named
                   01_fixesproto-v6.diff.
15:54 < sunweaver> However, when looking at a build of libxfixes  
5.0-4ubuntu4 I see a config.h file that announces itself with  
PACKAGE_VERSION 5.0.
15:55 < sunweaver> So, my current guess is that libxfixes annouces  
itself as v5 and also does a xlib-xserver version handshake based on  
v5, but then
                   executes code from libxfixes v6 which then breaks nxagent.
15:55 < sunweaver> Is that possible?

Can anyone comment on this?

Mike

-- 

DAS-NETZWERKTEAM
mike gabriel, rothenstein 5, 24214 neudorf-bornstein
fon: +49 (1520) 1976 148

GnuPG Key ID 0x25771B31
mail: mike.gabriel@das-netzwerkteam.de, http://das-netzwerkteam.de

freeBusy:
https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.xfb
[Message part 2 (application/pgp-signature, inline)]

Send a report that this bug log contains spam.


X2Go Developers <owner@bugs.x2go.org>. Last modified: Tue Mar 5 10:13:57 2024; Machine Name: ymir.das-netzwerkteam.de

X2Go Bug tracking system

Debbugs is free software and licensed under the terms of the GNU Public License version 2. The current version can be obtained from https://bugs.debian.org/debbugs-source/.

Copyright © 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson, 2005-2017 Don Armstrong, and many other contributors.