I don't have this problem with the example provided:

demo material 1
print -dpsc

However, I can trigger it with

demo light 9
print -dpsc

This seems like a fairly easy fix to go through a temporary file.

The simple command bellow for printing the current figure to the default printer fails on linux:

demo material 1
print -dpsc

I get the error bellow:

/usr/bin/lpr: Error - unable to queue from stdin - Connexion ré-initialisée par le correspondant.
GPL Ghostscript 9.20: ERROR: ioerror (-12) on closing ps2write device.

I changed _opengl_print_.m so that it prints the commands onscreen and here is what I observe

/usr/bin/gs -dQUIET -dNOPAUSE -dBATCH -dSAFER -dAutoRotatePages=/None -sDEVICE=ps2write -dLanguageLevel=2 -dEmbedAllFonts=true -dEPSCrop -sPAPERSIZE=letter -dFIXEDMEDIA -sOutputFile="-" /tmp/oct-x4iz82.ps - | /usr/bin/lpr -l ; rm /tmp/oct-x4iz82.ps

While when printing to a ps file here is the command:

/usr/bin/gs -dQUIET -dNOPAUSE -dBATCH -dSAFER -dAutoRotatePages=/None -sDEVICE=ps2write -dLanguageLevel=2 -dEmbedAllFonts=true -dEPSCrop -sPAPERSIZE=letter -dFIXEDMEDIA -sOutputFile="/tmp/toto.ps" /tmp/oct-O5mLnt.ps - ; rm /tmp/oct-O5mLnt.ps

The main difference, except the use of lpr, is that ghostscript writes to stdout instead of a file.

This is not a problem for small figures (e.g plot (1:10)) and the workaround is to print to ps first and then use lpr manually:

demo material 1
print -dpsc /tmp/toto.ps
system ("lpr -lr /tmp/toto.ps")