I use gv command in my scripts to view *.pdf or *.ps files (I do that instead of using acroread or okular because gv has a nice option -watch that allows me to see changes in a  troff or LaTex file I am working on while using vi editor.) However in my new laptop (Dell-Precision-M with ubuntu 14-04 installed) gv keeps giving me trouble by always complaining like that:$gv  test.pdfWarning: Cannot convert string --Helvetica-Medium-R-Normal---140---P-*-ISO8859-1 to type FontStructWarning: Cannot convert string --Helvetica-Medium-R-Normal---120---P-*-ISO8859-1 to type FontStructWarning: Cannot convert string --Helvetica-Medium-R-Normal---100---P-*-ISO8859-1 to type FontStructWarning: Cannot convert string --Helvetica-Bold-R-Normal---120---P-*-ISO8859-1 to type FontStructFrankly, I don't care about those fonts, and anyway, I think it is some kind of a bug (since neither acroread nor okular ever complained about that).  So, I tried to simply suppress that warning mgs, by using any options available for gv command to be quiet, silent, etc, which could be found in man gv or gv --help, like -quiet, -infoSilent, -dsc, -eof,  -- but to no avail. The gv is hell-bent on screaming out those four lines no matter what is a target file.  I could've live with that, but in my scrips a few lines after gv command I have a vi command and those complaints mess up my text in vi.Any way of fixing that?
gv stubborn complaints
ghostscript
I would fix it by installing the fonts.  On my Debian system, those are in the xfonts-75dpi and xfonts-100dpi packages.  Red Hat uses different package names.Other people simply ignore warnings, which are usually sent to the standard error:gv test.pdf 2>/dev/null