Probably no one has tried it yet. Most large-scale TurboVNC deployments are 
using either an older distro with GNOME 2 or KDE 4, or they're using MATE. 
Please file a GitHub issue with your observations, and I'll look into it.

Unfortunately, GNOME and KDE both have moved in the direction of flash over 
substance, and it doesn't surprise me that the newer Plasma releases are 
requiring OpenGL like GNOME 3 does. Hopefully it's a relatively simple fix 
within VGL. Otherwise, if it's more than a few hours, it will probably have to 
be approached as a funded development project.

> On Jul 21, 2016, at 7:12 AM, Joshua Anderson <[email protected]> wrote:
> 
> Has anyone had luck getting KDE Plasma 5.7 to work in a TurboVNC server? I 
> get an error that Plasma is unable to start because it cannot use OpenGL 2.
> 
> I tried disabling compositing and opengl in xstartup:
> export KWIN_COMPOSE=N
> export QT_XCB_FORCE_SOFTWARE_OPENGL=1
> exec startkde; exit
> 
> I tried running startkde with vglrun (the system is configured and working to 
> use vglrun). I tried with -3dwm to vncserver, I tried to disable compositing 
> with -extension Composite. Nothing seems to convince Plasma to stop searching 
> for OpenGL, and for reasons I don't understand vglrun doesn't seem to make it 
> happy. This is unfortunate because earlier versions of KDE always played 
> nicely with VNC and didn't have a hard requirement on opengl, unlike some 
> other window managers.
> 
> I am running turbovnc v2.0.2, and an install of KDE Plasma 5.7 in Gentoo.
> ------
> Joshua A. Anderson, Ph.D.
> Research Area Specialist, Chemical Engineering, University of Michigan
> Phone: 734-647-8244
> http://www-personal.umich.edu/~joaander/
> ------------------------------------------------------------------------------
> What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
> patterns at an interface-level. Reveals which users, apps, and protocols are 
> consuming the most bandwidth. Provides multi-vendor support for NetFlow, 
> J-Flow, sFlow and other flows. Make informed decisions using capacity planning
> reports.http://sdm.link/zohodev2dev
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What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
patterns at an interface-level. Reveals which users, apps, and protocols are 
consuming the most bandwidth. Provides multi-vendor support for NetFlow, 
J-Flow, sFlow and other flows. Make informed decisions using capacity planning
reports.http://sdm.link/zohodev2dev
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