[X2Go-User] unable to start Qt/KDE apps under x2go

[Bernd Schubert]

So whenever I opened any QT5 application, for example qgit, it opened a
window frame, but didn't render anything in it. With x2go stable there
were some xrender messages on the console, with x2go nightly/heuler,
absolutely no error reports, but also still no rendered window content.

I initially thought it is related to installed QT or KDE applications,
and when I removed libqt5core5a (which then also removed anything
dependent on qt5) and reinstalled qt5, I got it working once. But later
on it failed again. It also somehow seems to be related to what is
running/installed on the x2goclient that *starts* x2goserver (see Tomasz
solution). So it is possible that you might not run into the issue. As I
don't fully understand what is going on, I also cannot give an exact
description what you need to do to run into it.

Bernd

On 02/23/2018 12:35 PM, Robert Dinse wrote:
> 
>       Can you give a specific example of an app and what it does under
> x2go?
> I can try to replicate here.  Not aware of any issues and have been
> using x2go
> for quite a while.
> 
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> On Fri, 23 Feb 2018, Bernd Schubert wrote:
> 
>> Date: Fri, 23 Feb 2018 12:32:45 +0100
>> From: Bernd Schubert <bs_lists at aakef.fastmail.fm>
>> To: Robert Dinse <nanook at eskimo.com>, x2go users
>> <x2go-user at lists.x2go.org>
>> Subject: Re: [X2Go-User] unable to start Qt/KDE apps under x2go
>>
>> Hmm, yes, xwayland is installed, but I didn't update it yet to the
>> version on bionic. For me it seems to be a pure qt issue on ubuntu 17.10.
>>
>> On 02/23/2018 12:47 AM, Robert Dinse wrote:
>>>
>>>      I just apt install Xorg; apt remove Xwayland, didn't mess with any
>>> of the Qt install.
>>>
>>> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
>>>
>>>
>>>  Eskimo North Linux Friendly Internet Access, Shell Accounts, and
>>> Hosting.
>>>    Knowledgeable human assistance, not telephone trees or script
>>> readers.
>>>  See our web site: http://www.eskimo.com/ (206) 812-0051 or (800)
>>> 246-6874.
>>>
>>> On Fri, 23 Feb 2018, Bernd Schubert wrote:
>>>
>>>> Date: Fri, 23 Feb 2018 00:32:04 +0100
>>>> From: Bernd Schubert <bs_lists at aakef.fastmail.fm>
>>>> To: Robert Dinse <nanook at eskimo.com>
>>>> Subject: Re: [X2Go-User] unable to start Qt/KDE apps under x2go
>>>>
>>>>
>>>>
>>>> On 02/22/2018 11:51 PM, Robert Dinse wrote:
>>>>>
>>>>>      I'm running 17.10 but not Unity, been working fine for me.  I do
>>>>> not
>>>>> use Wayland however, I am using Xorg.  Bionic also moved back to Xorg,
>>>>> so that
>>>>> may be your issue.
>>>>
>>>> Which part does this? I have seen qtwayland, but didn't have it
>>>> installed
>>>>
>>>> Thanks,
>>>> Bernd
>>>>
>>