[Simh] Can't start VAX from SSH

[Mark Pizzolato]

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-bounces at trailing-edge.com] On Behalf Of Baker, Lawrence M
Sent: Thursday, May 28, 2020 1:48 PM
To: simh at 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

baker at usgs.gov


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