X2Go Bug report logs - #496
x2goclient crashes X session when switching from 800x600 to fullscreen

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

From: Stefan Baur <newsgroups.mail2@stefanbaur.de>

To: submit@bugs.x2go.org, Mike Gabriel <mike.gabriel@das-netzwerkteam.de>, Michael DePaulo <mikedep333@gmail.com>

Subject: x2goclient crashes X session when switching from 800x600 to fullscreen

Date: Sat, 10 May 2014 17:54:00 +0200

Package: x2goclient
Version: 4.0.2.0

Hi,

this bug manifests itself on Windows.

Steps to reproduce:
Set up an 800x600 desktop session and connect.
Switch it to fullscreen using Ctrl-Alt-F once it's active.
Result: X (vcxsrv, the one shipped with x2goclient) server crashes.

We (Mike#2 and I) have verified that this occurs on Windows 7x64 and
Windows 8.1u1x64, with Debian Wheezy/Trinity and Ubuntu 14.04/MATE 1.8
on our respective servers.

Q: Mike#1, is this related to #488? Something going wrong due to the
error in the shortcut file parsing? Or are we seeing a different error here?

-Stefan

Message #10 received at 496@bugs.x2go.org (full text, mbox, reply):

From: Michael DePaulo <mikedep333@gmail.com>

To: 496@bugs.x2go.org

Subject: Some Investigation

Date: Tue, 1 Jul 2014 23:32:59 -0400

I just tried out VcXsrv-xp 1.14.3.2 on its own, not with X2Go. I
launched an XDMCP session using "XLaunch" in "One large window" mode.

I also tried out Cygwin X11 on its own. I ran "X -query <hostname>",
which appears to be the same as what I did in XLaunch.

Results:
Whether I am at the gdm login screen, or I am logged into the gnome2
session (centos 6.5), VcXsrv does not respond to ctrl+alt+F.

Conclusion:
ctrl+alt+F must be an X2Go-specific feature, not a common Xwin feature.

Message #15 received at 496@bugs.x2go.org (full text, mbox, reply):

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

To: Michael DePaulo <mikedep333@gmail.com>, 496@bugs.x2go.org

Subject: Re: [X2Go-Dev] Bug#496: Some Investigation

Date: Wed, 02 Jul 2014 07:56:18 +0000

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

Hi Mike#2,

On  Mi 02 Jul 2014 05:32:59 CEST, Michael DePaulo wrote:

> I just tried out VcXsrv-xp 1.14.3.2 on its own, not with X2Go. I
> launched an XDMCP session using "XLaunch" in "One large window" mode.
>
> I also tried out Cygwin X11 on its own. I ran "X -query <hostname>",
> which appears to be the same as what I did in XLaunch.
>
> Results:
> Whether I am at the gdm login screen, or I am logged into the gnome2
> session (centos 6.5), VcXsrv does not respond to ctrl+alt+F.
>
> Conclusion:
> ctrl+alt+F must be an X2Go-specific feature, not a common Xwin feature.

I remember to have seen that in X2Go Client VcXsrv gets launched with  
several different options, depending on the session mode (desktop,  
rootless, windowed desktop, fullscreen desktop). I always wondered why  
that is the case.

In Python X2Go I use these VcXsrv options [1] for all kinds of session  
and I think to remember that I don't observe any troubles when  
switching fullscreen back and fourth. Though, I am not 100% sure. (You  
may want to test the latest pyhoca-gui build for win32 and cross-check  
that).

Mike#1

[1]  
http://code.x2go.org/gitweb?p=python-x2go.git;a=blob;f=x2go/defaults.py;h=c235e156b065cb5b6efbe12f431ab0aecc4de08c;hb=2f57967afb301017cbe9f0325eb28c7d9ba95be9#l236
-- 

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Message #20 received at 496@bugs.x2go.org (full text, mbox, reply):

From: Michael DePaulo <mikedep333@gmail.com>

To: 496@bugs.x2go.org

Subject: VcXsrv 1.15.2.0 is still affected

Date: Mon, 7 Jul 2014 21:15:14 -0400

VcXsrv 1.15.2.0 was just released (not to be confused with previous
version, 1.15.0.2).
it is still affected.

Message #27 received at 496@bugs.x2go.org (full text, mbox, reply):

From: Michael DePaulo <mikedep333@gmail.com>

To: 496@bugs.x2go.org

Subject: log output

Date: Thu, 23 Oct 2014 10:24:34 -0400

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

I've attached the x2goclient (4.0.3.0-20141021-debug) log and the
VcXsrv log of when this bug is triggered

The  X-Server command line options I am passing are shown in the .png. They are:
-multiwindow -notrayicon -clipboard -logverbose 3

-logverbose 3 does not do anything.

On IRC, user nkef posted a practically identical VcXsrv log:
http://pastebin.com/raw.php?i=5Dj2rx5y

[VCXSrv.--help.log (application/octet-stream, attachment)]

[VCXSrv.0.log (application/octet-stream, attachment)]

[x2goclient-4.0.3.0-20141021.log (application/octet-stream, attachment)]

[2014-10-23 10_19_09-Settings.png (image/png, attachment)]

Message #32 received at 496@bugs.x2go.org (full text, mbox, reply):

From: Nikolaos Kefalas <nkefalas@gmail.com>

To: 496@bugs.x2go.org

Subject: x2goclient crashes X session when switching from window to fullscreen

Date: Fri, 24 Oct 2014 00:51:38 +0300

I tested the x2go 4.0.3.0 with VcXsrv 1.16.1.0 x64 and the same crash
occurs in Window 8.1 x64 when switching from window to fullscreen.

Message #37 received at 496@bugs.x2go.org (full text, mbox, reply):

From: Nikolaos Kefalas <nkefalas@gmail.com>

To: 496@bugs.x2go.org

Subject: x2goclient crashes X session when switching from window to fullscreen

Date: Fri, 24 Oct 2014 10:24:47 +0300

I tested also the x2go 4.0.3.0 with VcXsrv 1.16.1.0 x64 and  x32 and
the same crash occurs in Windows 7 SP1 x64 when switching from window
to fullscreen. The -logverbose 3 produced no extra info in

VCXSrv.0.log.

🔗 View this message in rfc822 format

From: Joaquín Escayo <jescayo@ucm.es>

To: 496@bugs.x2go.org

Subject: Bug#496:

Date: Mon, 22 May 2017 10:27:15 +0200

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

It´s happening to me also.

Latest version of x2go client (4.1.0.0) on Windows 8 x64 and server side
with a Scientific Linux 7.1.

If you switch to fullscreen the X server crashes, but if you start the
session fullscreen it seems to work.

Let me know if I can provide debug information to solve this bug.

Thank you!

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