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

Toggle useless messages

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

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

To: submit@bugs.x2go.org

Subject: x2go kubuntu 12.4

Date: Fri, 14 Sep 2012 16:35:32 +0200

[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 ()
_______________________________________________
X2Go-User mailing list
X2Go-User@lists.berlios.de
https://lists.berlios.de/mailman/listinfo/x2go-user


----- Ende der weitergeleiteten Nachricht -----


-- 

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)]

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

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...

Date: Fri, 14 Sep 2012 22:52:57 +0200

[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


-- 

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)]

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

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

Date: Tue, 25 Sep 2012 16:37:19 +0200

[Message part 1 (text/plain, inline)]

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

-- 

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)]

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

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

To: 28@bugs.x2go.org

Subject: Xfixes issues with Ubuntu precise and above

Date: Wed, 09 Jan 2013 16:22:18 +0100

[Message part 1 (text/plain, inline)]

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)]

[Message part 3 (application/pgp-signature, inline)]

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

From: Ulrich Sibiller <ulrich.sibiller@gmail.com>

To: 28@bugs.x2go.org

Subject: Seems to be fixed in newer versions

Date: Wed, 29 Oct 2014 23:39:03 +0100

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.)

🔗 View this message in rfc822 format

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

To: uli42@gmx.de, 28@bugs.x2go.org

Subject: Bug#28: [X2Go-Dev] Bug#28: Seems to be fixed in newer versions

Date: Wed, 21 Nov 2018 20:25:27 +0000

[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
-- 

DAS-NETZWERKTEAM
mike gabriel, herweg 7, 24357 fleckeby
mobile: +49 (1520) 1976 148
landline: +49 (4354) 8390 139

GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22  0782 9AF4 6B30 2577 1B31
mail: mike.gabriel@das-netzwerkteam.de, http://das-netzwerkteam.de

[Message part 2 (application/pgp-signature, inline)]

Send a report that this bug log contains spam.