Hi Uli,

Sorry for the slow reply. For my XFCE sessions, turning on "-extension GLX"
seems to solve the problem. But under "published applications" mode, the
issue is still there.

Thanks and regards,
Yan

On Sat, Mar 16, 2019 at 6:54 AM Ulrich Sibiller <uli42@gmx.de> wrote:

> On Thu, Mar 14, 2019 at 1:00 PM Yan Zhang <kriszhyan@gmail.com> wrote:
>
> > I found a temporary solution. If I disable the transient mark mode,
> under which the selected region is highlighted, this issue goes away. So I
> guess the issue is related to events generated by rendering the highlighted
> region. And one thing I forgot to mention is that if I start emacs without
> GUI (i.e., emacs -nw), I do not have this issue.
>
> So this indicates that it probalby is connected to drawing. If this
> happens via images for some reason it might explain the problem.
>
> Please perform this test for me: Edit /etc/x2go/agent.options on the
> server and ensure that the following line is active (no leading '#'):
>
> X2GO_NXAGENT_DEFAULT_OPTIONS+=" -extension GLX"
>
> Then start a new session (with transient mark mode enabled) and retry.
> Is that working better?
>
> Uli
>


-- 
Yan