Bug#1024327: gv hangs on any file

Could be the same as https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1023330 which is fixed in testing now.

Bug#1024318: gv: x11 output driver not found

It has also been reported here (not really a ghostview bug I think): https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1023330