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

Report forwarded to x2go-dev@lists.berlios.de, X2Go Developers <x2go-dev@lists.berlios.de>:
Bug#28; Package x2goserver. (Fri, 14 Sep 2012 14:38:45 GMT) (full text, mbox, link).

Acknowledgement sent to Mike Gabriel <mike.gabriel@das-netzwerkteam.de>:
New Bug report received and forwarded. Copy sent to X2Go Developers <x2go-dev@lists.berlios.de>. (Fri, 14 Sep 2012 14:38:45 GMT) (full text, mbox, link).

Message #5 received at submit@bugs.x2go.org (full text, mbox, reply):

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Date: Fri, 14 Sep 2012 16:35:32 +0200
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: submit@bugs.x2go.org
Subject: x2go kubuntu 12.4
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[Message part 1 (text/plain, inline)]
Package: x2goserver
Version: 3.1.1.3
Tags: confirmed
Severity: normal

Forwarding this issue into the X2Go bug tracker...
Mike

----- Weitergeleitete Nachricht von mirco@rohloff.de -----
     Datum: Sun, 19 Aug 2012 23:19:19 +0200
       Von: Mirco Rohloff <mirco@rohloff.de>
   Betreff: [X2Go-User] x2go kubuntu 12.4
        An: x2go-user@lists.berlios.de

Hello,

i want to use Kubuntu 12.4 LTS with X2go. After any Login the Kdesktop  
restarts with folloing Krash Report. Has anybody a workaroung for this  
problem?

Thanks Mirco


Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc671dfe780 (LWP 15661))]

Thread 3 (Thread 0x7fc655994700 (LWP 15663)):
#0  0x00007fc66ce0bee8 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#1  0x00007fc66ce0dd31 in  
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()  
from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007fc66cddac82 in  
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()  
from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3  0x00007fc66cddaed7 in  
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from  
/usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4  0x00007fc66ccd9fa7 in QThread::exec() () from  
/usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007fc66cdba9ff in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007fc66ccdcfcb in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007fc665f03e9a in start_thread () from  
/lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fc6716154bd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fc655193700 (LWP 15664)):
#0  0x00007fc665f07d84 in pthread_cond_wait@@GLIBC_2.3.2 () from  
/lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007fc66e0cb222 in ?? () from  
/usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fc66e0cb259 in ?? () from  
/usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fc665f03e9a in start_thread () from  
/lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fc6716154bd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc671dfe780 (LWP 15661)):
[KCrash Handler]
#6  0x00007fc6715a602c in free () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007fc66f057819 in XFree () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#8  0x00007fc66ebff2ee in XRRUpdateConfiguration () from  
/usr/lib/x86_64-linux-gnu/libXrandr.so.2
#9  0x00007fc67194cc60 in ?? () from  
/usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#10 0x00007fc67193e4b8 in ?? () from  
/usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#11 0x00007fc66c1cdb85 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#12 0x00007fc66c1dcf98 in QApplication::x11ProcessEvent(_XEvent*) ()  
from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#13 0x00007fc66c207b3a in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#14 0x00007fc66cddac82 in  
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()  
from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#15 0x00007fc66cddaed7 in  
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from  
/usr/lib/x86_64-linux-gnu/libQtCore.so.4
#16 0x00007fc66cddff67 in QCoreApplication::exec() () from  
/usr/lib/x86_64-linux-gnu/libQtCore.so.4
#17 0x00007fc671940c36 in kdemain () from  
/usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#18 0x00007fc67154476d in __libc_start_main () from  
/lib/x86_64-linux-gnu/libc.so.6
#19 0x0000000000400661 in _start ()
_______________________________________________
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----- Ende der weitergeleiteten Nachricht -----


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Information forwarded to x2go-dev@lists.berlios.de, X2Go Developers <x2go-dev@lists.berlios.de>:
Bug#28; Package x2goserver. (Fri, 14 Sep 2012 20:54:14 GMT) (full text, mbox, link).

Acknowledgement sent to Mike Gabriel <mike.gabriel@das-netzwerkteam.de>:
Extra info received and forwarded to list. Copy sent to X2Go Developers <x2go-dev@lists.berlios.de>. (Fri, 14 Sep 2012 20:54:14 GMT) (full text, mbox, link).

Message #10 received at 28@bugs.x2go.org (full text, mbox, reply):

Received: (at 28) by bugs.x2go.org; 14 Sep 2012 20:53:01 +0000
From mike.gabriel@das-netzwerkteam.de  Fri Sep 14 22:53:01 2012
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Date: Fri, 14 Sep 2012 22:52:57 +0200
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: 28@bugs.x2go.org
Cc: mirco@rohloff.de
Subject: Kubuntu crashes reduced as best as possible from the X2Go side...
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[Message part 1 (text/plain, inline)]
tags #28 pending fixed
thanks

Hi all,

The issue is solved on the X2Go side, however please note that the  
crashing kwin process is a Ubuntu-only bug and probably due to one of  
their libXrandr patches applied on top of KDE4. The issue does not  
occur on Debian.

From the X2Go side we could do as much as possible:

Use libXrandr from libnx-x11:
http://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=1590476de31766028725fa1272dfcc50b7d1305e
http://code.x2go.org/gitweb?p=nx-libs.git;a=commitdiff;h=b8605d4d6c6f02466ab7586c8ece6b4bd9570751

LD_LIBRARY_PATH bug:
http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=29
->
http://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=0b3c71ca7b6e3681a2ade80346621b22ffa7f255

So, what we have after these fixes:

  + Kubuntu startsup ok.
  + Kubuntu still crashes when a resize event occurs on the session window
    -> This is not relevant to X2Go thin clients, though, as they do  
not resize
       the desktop.
  + you cannot resize the display resolution in Kubuntu (using RandR, Resize
    and Rotate)

IMHO, this has to be solved in the Ubuntu version of KDE.

Greets,
Mike


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fon: +49 (1520) 1976 148

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Added tag(s) fixed and pending. Request was from Mike Gabriel <mike.gabriel@das-netzwerkteam.de> to control@bugs.x2go.org. (Fri, 14 Sep 2012 20:54:14 GMT) (full text, mbox, link).

Removed tag(s) fixed. Request was from Mike Gabriel <mike.gabriel@das-netzwerkteam.de> to control@bugs.x2go.org. (Fri, 14 Sep 2012 20:55:36 GMT) (full text, mbox, link).

Information forwarded to x2go-dev@lists.berlios.de, X2Go Developers <x2go-dev@lists.berlios.de>:
Bug#28; Package x2goserver. (Tue, 25 Sep 2012 14:39:02 GMT) (full text, mbox, link).

Acknowledgement sent to Mike Gabriel <mike.gabriel@das-netzwerkteam.de>:
Extra info received and forwarded to list. Copy sent to X2Go Developers <x2go-dev@lists.berlios.de>. (Tue, 25 Sep 2012 14:39:02 GMT) (full text, mbox, link).

Message #19 received at 28@bugs.x2go.org (full text, mbox, reply):

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Date: Tue, 25 Sep 2012 16:37:19 +0200
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: 28@bugs.x2go.org, 29@bugs.x2go.org
Cc: control@bugs.x2go.org
Subject: Closing X2Go bugs after release of X2Go Server 3.1.1.4
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close #28
close #29
thanks

Closing X2Go Server bugs:

  The released version 3.1.1.4 closes:
  http://bugs.x2go.org/28
  http://bugs.x2go.org/29

-- 

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fon: +49 (1520) 1976 148

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Marked Bug as done Request was from Mike Gabriel <mike.gabriel@das-netzwerkteam.de> to control@bugs.x2go.org. (Tue, 25 Sep 2012 14:39:04 GMT) (full text, mbox, link).

Notification sent to Mike Gabriel <mike.gabriel@das-netzwerkteam.de>:
Bug acknowledged by developer. (Tue, 25 Sep 2012 14:39:05 GMT) (full text, mbox, link).

Bug archived. Request was from Debbugs Internal Request <git-admin@x2go.org> to internal_control@bugs.x2go.org. (Wed, 24 Oct 2012 05:24:01 GMT) (full text, mbox, link).

Bug unarchived. Request was from Mike Gabriel <mike.gabriel@das-netzwerkteam.de> to control@bugs.x2go.org. (Wed, 09 Jan 2013 15:18:02 GMT) (full text, mbox, link).

Bug reopened Request was from Mike Gabriel <mike.gabriel@das-netzwerkteam.de> to control@bugs.x2go.org. (Wed, 09 Jan 2013 15:18:02 GMT) (full text, mbox, link).

Changed Bug title to 'Xfixes issues with Ubuntu precise and above' from 'x2go kubuntu 12.4' Request was from Mike Gabriel <mike.gabriel@das-netzwerkteam.de> to control@bugs.x2go.org. (Wed, 09 Jan 2013 15:18:02 GMT) (full text, mbox, link).

Information forwarded to x2go-dev@lists.berlios.de, X2Go Developers <x2go-dev@lists.berlios.de>:
Bug#28; Package x2goserver. (Wed, 09 Jan 2013 15:33:02 GMT) (full text, mbox, link).

Acknowledgement sent to Mike Gabriel <mike.gabriel@das-netzwerkteam.de>:
Extra info received and forwarded to list. Copy sent to X2Go Developers <x2go-dev@lists.berlios.de>. (Wed, 09 Jan 2013 15:33:02 GMT) (full text, mbox, link).

Message #36 received at 28@bugs.x2go.org (full text, mbox, reply):

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Date: Wed, 09 Jan 2013 16:22:18 +0100
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: 28@bugs.x2go.org
Subject: Xfixes issues with Ubuntu precise and above
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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

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Removed tag(s) pending. Request was from Mike Gabriel <mike.gabriel@das-netzwerkteam.de> to control@bugs.x2go.org. (Mon, 11 Feb 2013 11:03:02 GMT) (full text, mbox, link).

Information forwarded to x2go-dev@lists.x2go.org, X2Go Developers <x2go-dev@lists.x2go.org>:
Bug#28; Package x2goserver. (Wed, 29 Oct 2014 22:40:01 GMT) (full text, mbox, link).

Acknowledgement sent to uli42@gmx.de:
Extra info received and forwarded to list. Copy sent to X2Go Developers <x2go-dev@lists.x2go.org>. (Wed, 29 Oct 2014 22:40:01 GMT) (full text, mbox, link).

Message #43 received at 28@bugs.x2go.org (full text, mbox, reply):

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From: Ulrich Sibiller <ulrich.sibiller@gmail.com>
Date: Wed, 29 Oct 2014 23:39:03 +0100
Message-ID: <CANVnVY+-GSQLTkOKLc11Nw1vLJMy7YUYMrDcVTfDauKzqcV4YA@mail.gmail.com>
Subject: Seems to be fixed in newer versions
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Well, looking at the source of the current libxfixes (of Ubuntu
Trusty) I can find no XFIXES version 6 code. Additionally
libxfixes_5.0.1-1ubuntu1.diff.gz contains this changelog update:

+ -- Julien Cristau <jcristau@debian.org>  Tue, 14 May 2013 10:12:48 +0200
+
+libxfixes (1:5.0-4ubuntu6) raring; urgency=low
+
+  * Drop the v6 protocol.
+

I cannot test a full KDE setup here but I think at least the
speculation that v6 could be the reason can be dropped. Do the kwin
crashes still happen with Raring or any later release of (K)Ubuntu?
(For Precise a backport might be necessary.)

Information forwarded to x2go-dev@lists.x2go.org, X2Go Developers <x2go-dev@lists.x2go.org>:
Bug#28; Package x2goserver. (Mon, 12 Dec 2016 04:00:02 GMT) (full text, mbox, link).

Information forwarded to x2go-dev@lists.x2go.org, X2Go Developers <x2go-dev@lists.x2go.org>:
Bug#28; Package x2goserver. (Sun, 12 Feb 2017 12:15:02 GMT) (full text, mbox, link).

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[Message part 1 (text/plain, inline)]
Control: close -1

Hi,

On  Mi 29 Okt 2014 23:39:03 CET, Ulrich Sibiller wrote:

> Well, looking at the source of the current libxfixes (of Ubuntu
> Trusty) I can find no XFIXES version 6 code. Additionally
> libxfixes_5.0.1-1ubuntu1.diff.gz contains this changelog update:
>
> + -- Julien Cristau <jcristau@debian.org>  Tue, 14 May 2013 10:12:48 +0200
> +
> +libxfixes (1:5.0-4ubuntu6) raring; urgency=low
> +
> +  * Drop the v6 protocol.
> +
>
> I cannot test a full KDE setup here but I think at least the
> speculation that v6 could be the reason can be dropped. Do the kwin
> crashes still happen with Raring or any later release of (K)Ubuntu?
> (For Precise a backport might be necessary.)

Finally closing this issue. Old and rotten and mostly gone these days.

Mike
-- 

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Acknowledgement sent to Mike Gabriel <mike.gabriel@das-netzwerkteam.de>:
Extra info received and forwarded to list. Copy sent to X2Go Developers <x2go-dev@lists.x2go.org>. (Wed, 21 Nov 2018 20:35:03 GMT) (full text, mbox, link).

Marked Bug as done Request was from Mike Gabriel <mike.gabriel@das-netzwerkteam.de> to 28-submit@bugs.x2go.org. (Wed, 21 Nov 2018 20:35:04 GMT) (full text, mbox, link).

Notification sent to Mike Gabriel <mike.gabriel@das-netzwerkteam.de>:
Bug acknowledged by developer. (Wed, 21 Nov 2018 20:35:04 GMT) (full text, mbox, link).

Bug archived. Request was from Debbugs Internal Request <owner@bugs.x2go.org> to internal_control@bugs.x2go.org. (Thu, 20 Dec 2018 06:24:02 GMT) (full text, mbox, link).

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