Subject: Re: [X2Go-Dev] Bug#591: Works under certain configurations, not others

From: Mike Gabriel <[email-masked]>
Date: Mon, 08 Sep 2014 12:13:03 +0000

Hi Michael,

On  Mo 08 Sep 2014 13:41:00 CEST, Michael DePaulo wrote:

> Hi Mike#1,
>
> On Mon, Sep 8, 2014 at 5:08 AM, Mike Gabriel
> <[email-masked]> wrote:
>> Hi Michael, hi Tristan,
>>
>> On  So 07 Sep 2014 16:46:07 CEST, Michael DePaulo wrote:
>>
>>> 1. I was *able* to reproduce this bug under X2Go Client for Windows.
>>> To be perfectly clear, it only happens when you are launching a remote
>>> application ("Single Application" or "Published Application"), not
>>> when you are launching a KDE session.
>>
>>
>> Actually, this can be blamed on the way how X11 integrates with MS Windows.
>>
>> We would need an app that docks into the Windows system tray and proxies
>> system tray icons coming in from applications running in VcXsrv/X11.
>>
>> http://standards.freedesktop.org/systemtray-spec/systemtray-spec-0.2.html#docking
>>
>> So you would need an app that is standing with one leg in X11, providing the
>> system-tray-provider specs as defined by freedesktop.org and standing in MS
>> Windows with the other leg, proxying the incoming X11 systray icons/menus to
>> the Windows system tray.
>>
>> Never heard of something like this to exist, actually.
>>
>> Any ideas???
>>
>> Mike
> [...]
>
> Can you explain why it works under test case 3 (X11 forwarding from an
> Ubuntu client) but not under test case 4 (X2Go from an Ubuntu client)?
>
> That would certainly give us a clue.
>
> -Mike#2

I guess it fails in X2Go, because X2Go single applications use nxagent  
as their display (in rootless mode). The rootless NX windows then get  
displayed on the local X11 via nxproxy.

With ssh -X you don't encapsulate applications in a separate Xserver  
(NX agent), but connect the applications directly to the local X11  
server.

Greets,
Mike
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