[winswitch] start-desktop with Fedora KDE Plasma

[Bob Babcock]

Antoine Martin via shifter-users wrote:
> It would be good to collect those commands somewhere on the wiki, as they do 
> seem to change over time.
> FWIW: I have a 'startkde' in Fedora 31, but no 'plasma' command.

Plasma is what I see in the pulldown to select the window manager when I log 
on.  But I don't have a plasma command either.

> The XPRA_DEFAULT_DESKTOP_VFB_RESOLUTION is set by default to:
> 1280x1024

Just tested.  If I set this on the Windows side, I don't have to use xrandr.  
Google doesn't get any hits searching for XPRA_DEFAULT_DESKTOP_VFB_RESOLUTION.

> I've just tried it with --start-child=startkde --exit-with-children=yes
> and the session was correctly terminated when I logged out of KDE.

That's what I was doing wrong.  I had --start=startkde, not --start-child.  Now 
the session starts and the server exits properly if I log off.

So only the non-refreshing screen problem remains.  It's too late here to do any 
more.  I'll file a ticket tomorrow.

Thanks for your help.