Last autumn I created several TeX files to print information on both sides
of a pre-printed form in landscape orientation. It worked just fine. This
was with ghostscript 8.15 under Slackware-10.2.

Now I need to print another form, but it's not working as it did. I could
run the .tex file through latex and dvips, but when I viewed the output using
ghostview ('gv filename.ps'), it displayed in portrait mode rather than in
landscape mode. I'm now running Slackware-11.0.

Someone on comp.text.tex suggested upgrading ghostscript-8.15 to -8.53.
But, when I checked the Slackware-11.0 source for a SlackBuild file, I
discovered that the espgs flavor was used, and the version was 8.15.3svn.
The Easy Software Products site notes that bugs in that version were fixed
in the now-released 8.15.4. So, I downloaded that and installed it. But,
when I try to view the PostScript file a message box displays over the still
portrait-oriented gv page with the message, "Unknown device x11." Sometimes
it includes the error message that the "PostScript interpreter failed in
main window."

GV is a separate package from gs, but I seem to be digging a deeper hole
here rather than producing a landscape-oriented page from my
formerly-working .tex files.

Any ideas?

Rich