Re: lpr desktop printers


Subject: Re: lpr desktop printers
From: R Shapiro (reshapiro@mediaone.net)
Date: Tue Oct 31 2000 - 08:58:56 MST


Math Department writes:
> What happens if you drop the .ps file on the desktop printer icon?

Exactly the same thing as happens if I drop a text file on the icon:

 lpd[10506]: protocol screwup: ^Bepson-medres

> Where is the postscript rasterized? The Epson can't do it.

This is handled by some ghostscript uniprint magic in the printerdb
entry corresponding to the filter of the "epson-medres" queue. I
don't know the details.

> I am pretty sure that you have the tcp/ip configuration right, since
> the Desktop Printer Utility can verify the printer.

I know the basic ip is right, since I can see the traffic: I can watch
linux receiving the packet which contains the request.

> Or is the client requesting print service supposed to speak "Epson"?

The client can speak postscript. For example, in linux I can run

 enscript -d epson-medres <some_text_file>

and I can print the RedHat ps test page from printtool (in color :).

> Good luck on finding a solution!

I have the unpleasant feeling I'll need to dig up a spec on the lpd
protocol to see what's going wrong.

-- 
reshapiro@mediaone.net



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