We installed a barebones Ubuntu server with X server. The X server installation can't be treated to be very good at this point. Tried vs-test-gpus, with the following result:
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hp@ubuntu:~$ /opt/vizstack/sbin/vs-test-gpus
Testing GPU 0 on host localhost
Starting X server...
No protocol specified
Error: unable to open display :0.0
Stopping X server...
Test PASSED - the 1 GPUs are usable.
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Clearly, the X server didn't start properly. However, the test succeeded. This needs to be investigated.
-- Shree