Thanks Thomas, you saved my life. 6 months thousands of crashing x2gosessions 
fixed by simply disabling javas2d xrenderer. Works well also for other Java 
applications.

export _JAVA_OPTIONS='-Dsun.java2d.xrender=false' in /etc/Profile



Am 26. August 2016 12:00:02 MESZ, schrieb x2go-dev-requ...@lists.x2go.org:
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>Today's Topics:
>
>   1. Bug#645: (Thomas Hamacher  |  sepus software)
>   2. Bug#1078: Windows 10 X2Go Client displays on detached    monitor
>      (Peter Bakker)
>   3. Bug#1072: X2Go Client: top 24 pixels in fullscreen       session do
>      not respond to mouse clicks (Chris Martin)
>   4. Re: x2go-client dual-monitors (Ulrich Sibiller)
>   5. Bug#1072: Bug#1072: X2Go Client: top 24 pixels in        fullscreen
>      session do not respond to mouse clicks (Ulrich Sibiller)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Wed, 17 Aug 2016 07:41:09 +0000
>From: "Thomas Hamacher  |  sepus software" <t...@sepus.biz>
>To: "6...@bugs.x2go.org" <6...@bugs.x2go.org>
>Subject: [X2Go-Dev] Bug#645:
>Message-ID:
>       
> <a13140405d49774aa32082bd6c0da3fe01860b6...@ex10mbox1h.hosting.inetserver.de>
>       
>Content-Type: text/plain; charset="us-ascii"
>
>When using IntelliJ this issue can be solved by disabling XRender.
>You can do this with the flag
>
>-Dsun.java2d.xrender=false
>
>Simply add this to the <IDEA_HOME>/bin/idea.vmoptions and it works.
>
>Maybe this thread also helps:
>https://intellij-support.jetbrains.com/hc/en-us/community/posts/206240979-intellij-10-5-with-xrender-JDK-1-7-enabled?page=1#community_comment_206528075
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>------------------------------
>
>Message: 2
>Date: Mon, 22 Aug 2016 09:01:15 -0400
>From: Peter Bakker <pbak...@iccontrols.com>
>To: sub...@bugs.x2go.org
>Subject: [X2Go-Dev] Bug#1078: Windows 10 X2Go Client displays on
>       detached        monitor
>Message-ID: <9aaf0d04-f9df-f70c-b1ec-286392892...@iccontrols.com>
>Content-Type: text/plain; charset=utf-8; format=flowed
>
>Package: x2goclient
>Version: 4.0.5.1
>
>The X2Go client restores to the last-used screen position, including
>the 
>restoring to the last-used monitor. When the client is closed down on a
>
>laptop computer and later restarted with no external monitor attached, 
>the client displays on the non-existing external monitor and is not 
>accessible to the user.
>
>
>------------------------------
>
>Message: 3
>Date: Fri, 12 Aug 2016 20:27:00 -0700
>From: Chris Martin <cmart.cyve...@gmail.com>
>To: sub...@bugs.x2go.org
>Subject: [X2Go-Dev] Bug#1072: X2Go Client: top 24 pixels in fullscreen
>       session do not respond to mouse clicks
>Message-ID:
>       <cakso3sx4tz_pphy97egkoqwjrn7jt9bgkmy6tj4brobz2mu...@mail.gmail.com>
>Content-Type: text/plain; charset=UTF-8
>
>Package: x2goclient
>Version: 4.0.5.1
>
>I am trying to start a full screen X2Go session which 1. takes up the
>entire display, and 2. responds to my mouse clicks everywhere in the
>session, but cannot accomplish this with any combination of settings.
>
>Client OS: Debian Jessie / 8 / Stable, GNOME 3 desktop environment
>Client X2Go Client: 4.0.5.1 and 4.0.3.1
>Server OS: Xubuntu 16.04 LTS
>Server x2goserver version: 4.0.1.19
>Server x2goserver-xsession version: 4.0.1.19
>
>When I choose "fullscreen", I get different behavior intermittently:
>
>1. The client spawns across the entire screen but the *top panel inside
>the X2Go session* does not respond to any mouse clicks. I suspect the
>panel in my GNOME session running the X2Go client (which occupies the
>same pixels behind the panel inside the X2Go session) is stealing mouse
>focus. My mouse pointer turns black instead of white when I hover over
>the top 24 pixels or so, inside the X2Go session.
>
>2. The client spawns what I would call a "maximized window". The top of
>the screen is still consumed by the title bar of the X2Go window, and
>the panel of the enclosing GNOME session in which the X2Go client is
>running.
>
>I have observed both cases 1 (most common) and 2 with X2Go Client
>4.0.5.1, and only case 1 with X2Go client 4.0.3.1.
>
>When I choose "Display 1" in the Input/Output settings, the X2Go
>session
>displays only in the upper-left quadrant of my display; the rest of the
>screen is black.
>
>Thank you,
>
>Chris Martin
>
>
>------------------------------
>
>Message: 4
>Date: Fri, 26 Aug 2016 10:19:52 +0200
>From: Ulrich Sibiller <ul...@gmx.de>
>To: Lena Herrmann <lena.herrman...@googlemail.com>,
>       x2go-dev@lists.x2go.org
>Subject: Re: [X2Go-Dev] x2go-client dual-monitors
>Message-ID:
>       <CANVnVYLFb6mA=jabhb9jjjukfx7xe48zxaab16bojwmw44p...@mail.gmail.com>
>Content-Type: text/plain; charset=UTF-8
>
>On Fri, Aug 26, 2016 at 9:38 AM, Lena Herrmann
><lena.herrman...@googlemail.com> wrote:
>> Hello,
>>
>> the linux server prints the following:
>>
>[...]
>>
>> XINERAMA version 1.1 opcode: 150
>>   head #0: 1920x1137 @ 0,0
>
>So this clearly shows that only one monitor is known to the nxagent.
>We need to find out why the Windows client is not reporting the two
>screens. Sorry, I do not know how the Windows side is setting up the X
>server but maybe someone else here has insight into that. @Mike#2: do
>have any idea how to debug that on the Windows side?
>
>Uli
>
>
>------------------------------
>
>Message: 5
>Date: Fri, 26 Aug 2016 10:22:45 +0200
>From: Ulrich Sibiller <ulrich.sibil...@gmail.com>
>To: Chris Martin <cmart.cyve...@gmail.com>, 1...@bugs.x2go.org
>Subject: [X2Go-Dev] Bug#1072: Bug#1072: X2Go Client: top 24 pixels in
>       fullscreen session do not respond to mouse clicks
>Message-ID:
>       <CANVnVYKp5s5pV_dD10=9Lro+o=4oeempf6w4uo_jrhez8n_...@mail.gmail.com>
>Content-Type: text/plain; charset=UTF-8
>
>On Sat, Aug 13, 2016 at 5:27 AM, Chris Martin <cmart.cyve...@gmail.com>
>wrote:
>> When I choose "fullscreen", I get different behavior intermittently:
>>
>> 1. The client spawns across the entire screen but the *top panel
>inside
>> the X2Go session* does not respond to any mouse clicks. I suspect the
>> panel in my GNOME session running the X2Go client (which occupies the
>> same pixels behind the panel inside the X2Go session) is stealing
>mouse
>> focus. My mouse pointer turns black instead of white when I hover
>over
>> the top 24 pixels or so, inside the X2Go session.
>>
>> 2. The client spawns what I would call a "maximized window". The top
>of
>> the screen is still consumed by the title bar of the X2Go window, and
>> the panel of the enclosing GNOME session in which the X2Go client is
>> running.
>
>Does pressing CTRL-ALT-F within the session help?
>
>> I have observed both cases 1 (most common) and 2 with X2Go Client
>> 4.0.5.1, and only case 1 with X2Go client 4.0.3.1.
>>
>> When I choose "Display 1" in the Input/Output settings, the X2Go
>session
>> displays only in the upper-left quadrant of my display; the rest of
>the
>> screen is black.
>
>Uli
>
>
>------------------------------
>
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>End of x2go-dev Digest, Vol 29, Issue 24
>****************************************

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