From ulrich.sibiller@gmail.com  Tue Oct 23 22:52:58 2018
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References: <D7DD482B.A16DA%adrianb@unimelb.edu.au> <CANVnVYJRMoW2fE4ds58060AojOjms49z_RNB00TF9xRQde_Gvw@mail.gmail.com>
 <D7F4B3C5.A2E43%adrianb@unimelb.edu.au>
In-Reply-To: <D7F4B3C5.A2E43%adrianb@unimelb.edu.au>
From: Ulrich Sibiller <uli42@gmx.de>
Date: Tue, 23 Oct 2018 22:52:17 +0200
Message-ID: <CANVnVY+m5Vh27XG-gn7Kiiop6+jxE=rcPKoEuYYUzSPZXQJc7A@mail.gmail.com>
Subject: Re: [X2Go-Dev] Bug#1312: QT applications crash with x2go server 4.1.0.2
To: Adrian Bickerstaffe <adrianb@unimelb.edu.au>
Cc: 1312@bugs.x2go.org
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On Tue, Oct 23, 2018 at 2:39 AM Adrian Bickerstaffe
<adrianb@unimelb.edu.au> wrote:
>
> The main one is Rstudio 1.1.456 which was installed from the .deb package=
 available from https://download1.rstudio.org/rstudio-xenial-1.1.456-amd64.=
deb (64.9MB).
>
> Without the workaround, RStudio fails to launch with the same sort of err=
or reported earlier in this thread. With the workaround, users reported =E2=
=80=9C=E2=80=A6quite difficult to navigate, slow response from server. In p=
articular but not only when using R studio. As well as constant flickering =
of server window=E2=80=9D and "The server window is often =E2=80=9Cflickeri=
ng=E2=80=9D, and response time is very slow."

I have tried that version but since I have no R experience I cannot
see any problems - neither with an old nx version nor with the latest
(and greatest ;-) developer version.

Without BIG-REQUESTS it fails with a GL message which indicates that
it is using OpenGL which is slow on NX. Maybe rstudio offers a way to
switch off OpenGL usage. I expect it to be fast then.

I seems there have been ways to configure that in rstudio (see
https://github.com/rstudio/rstudio/issues/3185) but my version 1.1,456
does not offer these settings.

You can TRY adding "-extension GLX" (which disables the GLX extension)
to x2goagent.options and see what happens.

Uli

