[X2Go-User] Display Going Black When Clicking on Certain Windows on remote system

[Neal Becker]

Could this be caused by compositing?

On Sun, Jan 30, 2022, 5:40 AM Ulrich Sibiller <uli42 at gmx.de> wrote:

> Hmm, interesting. I have no idea how this could happen. Let's try to
> narrow down the issue.
>
> Some ideas:
> - Please ensure you have the latest nx-libs (3.5.99.26) installed.
> - Are you reconnecting or starting a new session?
> - can you check if this issue stays when you are using another client?
> Can you try to replicate it with a windows client?
> - you could try an delete the nx cache on the client when no sessions
> are running: ~/.x2go/cache-*
> - you can run "x2goclient --debug" (but I doubt it will help with this
> issue)
> - compare /etc/x2go/x2goagent.options on all server systems
> - compare the session configurations for the different servers on your
> client: ~/.x2goclient/
>
> Uli
>
> On Sun, Jan 30, 2022 at 1:21 AM Joe W <jsw140 at hotmail.com> wrote:
> >
> > I use X2Go to connect from my local Linux system to some remote Centos 7
> systems where I run Cadence Virtuoso software. As far as I know the systems
> and X2Go are set up the same.
> >
> > Systems have the latest OS patches.
> >
> > X2go was installed from Epel repo.
> > client is v. 4.1.1.1-1.el7
> > server is4.1.0.3-9.el7
> >
> > There is one system that I connect to where when I start the X2Go
> session then the screen goes black for a second or two.
> >
> > When I run Virtuoso on that system then whenever I click on the main
> Virtuoso window or a Virtuoso graphics window  then my screen goes black.
> If I click outside the Virtuoso window then the screen reappears. If I
> click on the Virtuoso library manager window then the screen stays on.
> >
> > Note that I am running X2Go windowed but my entire screen goes black,
> not just the X2go window.
> >
> > Any suggestions what could be going wrong and how to debug it? I do not
> know how to turn on debugging in the Linux version.
> >
> > I am wondering if it is something weird with the color palette since it
> only happens for certain windows.
> >
> > I can connect to other systems without issue that are set up the same.
> >
> > Thanks
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