OK, I've installed MATE, changed from GDM to LightDM, and verified both are 
working on the console. I've also created a .dmrc file in my home directory 
with the contents:
[Desktop]
session=mate

I've removed the -3dwm option from the vncserver invocation, but I still 
get the "Oh no!" screen when I try to connect remotely using TurboVNC. What 
else could be getting in the way?

Kind regards,

Curt

On Thursday, January 25, 2018 at 2:22:08 PM UTC-5, DRC wrote:
>
> In my testing (https://turbovnc.org/Documentation/Compatibility), GNOME 
> 3 works with -3dwm, so I'm not sure why it isn't working for you, but 
> also, GNOME 3 is not an ideal window manager to use in a VNC 
> environment.  It's a compositing window manager, so even if you get it 
> working, it will be slow, and there are a handful of known issues with 
> it in a VNC environment 
> (
> https://github.com/TurboVNC/turbovnc/issues?utf8=%E2%9C%93&q=label%3A%22GNOME%203%22).
>  
>
>  Some have workarounds, but not all. 
>
> My suggestion would be to install and enable MATE using the instructions 
> here: 
> https://turbovnc.org/Documentation/Compatibility 
> (under "Red Hat Enterprise Linux 7 (and equivalents)").  That will give 
> you a similar window manager to the GNOME 2 window manager that you used 
> with RHEL 6 (MATE is a fork of GNOME 2.)  MATE is a 2D window manager, 
> so it will run in TurboVNC without -3dwm.  If you absolutely need to use 
> GNOME 3, then try the dev/2.2 evolving pre-release build 
> (https://turbovnc.org/DeveloperInfo/PreReleases), which has a built-in 
> software OpenGL implementation that (again, in my testing) works with 
> GNOME 3 without using -3dwm (although, again, performance will not be 
> stellar.) 
>
> DRC 
>

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