[Thinlinc-technical] tlclient/vncviewer prevents screen locking on X11?

[Peter Astrand]

Hi. Yes, this is the same type of problem. With ThinLinc, the 
corresponding solution is to deactivate the setting "Send system keys" 
(Options -> Options).

Also note that a window manager which supports "EWMH" is recommended. The 
ThinLinc client supports that but also automatically falls back to 
"override-redirect" for fullscreen mode otherwise.

Br,
Peter

On Thu, 15 Jan 2015, Torsten Kasch wrote:

> Hi,
>
> while preparing our ThinLinc setup for production at our site, we've come across
> the following issue: running the ThinLinc client (vncviewer) on a Linux client
> seems to prevent the screensaver from locking the client's desktop.
>
> This is somewhat problematic for our scenario because we will have to operate
> our Solaris/x86 SunRay infrastructure for some time. Our SunRay users usually
> rely on the screensaver automatically locking their desktop when temporarily
> leaving the terminal. But if they use the tlclient (via ssh on a Linux system),
> the ThinLinc session's screensaver will only lock the ThinLinc session after a
> couple of minutes, but the original SunRay session remains unprotected since the
> VNC session can be easily disconnected via the F8 menu, allowing unauthorized
> access to the user's account.
>
> While digging around I came across the following document:
>
> https://support.realvnc.com/Knowledgebase/Article/View/411/5/screensaver-is-not-activated-when-vnc-viewer-is-in-full-screen-mode-on-linux
>
> I know it's a different product, but I suspect the reason for the screensaver
> not being able to start is the same for TigerVNC? If this is true, I'd like to
> know if it is possible to have the native Linux/X11 desktop's screensaver firing
> up with a running ThinLinc client. Has anybody found a solution or workaround
> for this issue?
>
> cheers,
> 	Torsten
>
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