Just installed polymake 2.14 on Ubuntu 15.04 64 bit on two machines.
On one machine (intel graphic), once in a while jreality doesn't start. Running codes like
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$c=cube(3);
$c->VISUAL;
On the other machine (amd graphic with open source driver) jreality started a few times (but blank, with no image) and then it never starts again.
Starting polymake with
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polymake -dd
Otherwise there was no error.INFO:could not setup mac os handler, maybe not a mac
(just ran this again on the amd machine, this time jreality started, the probability of it starting is about 1/10. But jreality doesn't show any cube)