In your ssh session, I would think you could disable the QVSS device in your 
VAX simulator configuration file and it would run VMS just fine.  If that 
doesn't work (or if you never actually had the QVSS device enabled ), you could 
uninstall whatever libsdl2-dev package you've got on your Mac and then rebuild 
the VAX simulator and then run the rebuilt simulator.

From: Simh [mailto:simh-boun...@trailing-edge.com] On Behalf Of Baker, Lawrence 
M
Sent: Thursday, May 28, 2020 1:48 PM
To: simh@trailing-edge.com
Subject: [Simh] Can't start VAX from SSH

I am working from home and can only SSH in to my desktop Mac at work.  Our 
unhelpful IT department automatically patches and reboots our system, which 
must have happened last night.  That terminated the SIMH VAX I left running.  
Normally, I leave my desktop logged in.  Until today, I have had no trouble 
starting my SIMH VAX remotely.

Today, no one is logged in to my desktop.  When I SSH remotely and try to start 
my SIMH VAX, it fails immediately with the error message:
$ ./vax-20200419
_RegisterApplication(), FAILED TO establish the default connection to the 
WindowServer, _CGSDefaultConnection() is NULL.
SDL Video subsystem can't initialize
Is there any way around this short of driving to work and logging in to my 
desktop?


Larry Baker

US Geological Survey

650-329-5608

ba...@usgs.gov


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