[Simh] [EXTERNAL] RE: Can't start VAX from SSH

[Baker, Lawrence M]

SIMH VAX exits immediately without reading the configuration file.  That's the part I hope can be fixed.  If the SIMH VAX was built with SDL support, but the configuration file is for a VAX without a graphics head, then I should think the SDL failure should be irrelevant.  If the configuration file does try to connect to a graphics head, then that is when the SDL failure should matter, causing the configuration to fail.

It looks like I will have to rebuild the current SIMH VAX without SDL support for SDL failures to be ignored.


Larry Baker

US Geological Survey

650-329-5608

baker at usgs.gov


________________________________
From: Mark Pizzolato <Mark at infocomm.com>
Sent: Thursday, May 28, 2020 2:13 PM
To: Baker, Lawrence M <baker at usgs.gov>; simh at trailing-edge.com <simh at trailing-edge.com>
Subject: [EXTERNAL] RE: Can't start VAX from SSH


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


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.trailing-edge.com/pipermail/simh/attachments/20200528/21af09ad/attachment-0001.html>