This is on a 9.10 laptop. I'm in ipadmin group. $ groups moseley adm dialout cdrom floppy audio dip video plugdev fuse lpadmin admin vboxusers System->Administration->Printing lists 32 printers. Some listed printers I configured at my home (about 4) and the rest are network printers at the office. 1) How do I delete the ones I never use? Selecting a printer, right click and "Delete" is grayed out. I found a couple of related posts [1] but no solutions in my minute or two of searching. Wrong search terms I guess. Even if I run: $ sudo python /usr/share/system-config-printer/system-config-printer.py The Delete option is grayed out. 2) Where are all those printers saved? Even when I'm not on the office LAN I still see the long list of printers. So, they must be saved some place: $ lpinfo -vl | wc -l 16 And: <a href="http://localhost:631/printers/">http://localhost:631/printers/</a> shows only 10 printer. 9 have "Device URI: file:/dev/null". Not a lot listed in my /etc/cups/printers.conf <div style="margin-left: 40px;">$ sudo fgrep Printer /etc/cups/printers.conf | grep -v / # Printer configuration file for CUPS v1.3.9 <DefaultPrinter HP_Color_LaserJet_CM1312nfi_MFP> <Printer HP_Color_LaserJet_CM1312nfi_MFP_10.30.1.92> <Printer HP_Color_LaserJet_CM1312nfi_MFP_fax> <Printer Photosmart-C4500-series> </div> Nothing in my home directory: <div style="margin-left: 40px;">$ find ~/.cups/ /home/moseley/.cups/ /home/moseley/.cups/lpoptions </div><div style="margin-left: 40px;">$ ls -lt /home/moseley/.cups/lpoptions -rw-r--r-- 1 moseley moseley 0 2009-12-15 10:34 /home/moseley/.cups/lpoptions </div> My ppd directy is pretty empty: <div style="margin-left: 40px;">$ ls /etc/cups/ppd HP_Color_LaserJet_CM1312nfi_MFP_10.30.1.92.ppd HP_Color_LaserJet_CM1312nfi_MFP_fax.ppd HP_Color_LaserJet_CM1312nfi_MFP.ppd Photosmart-C4500-series.ppd </div> And, for example, I have a bunch of "Brother" printers displayed and this finds nothing: <div style="margin-left: 40px;">$ sudo fgrep -r Brother /etc/cups </div> And I could not find "Brother" in gconf-editor. Am I looking for printers in all the wrong places? 3) I'm never quite sure how to set up network printers. Should a machine be used as a queue for the network printers and then all print jobs are sent to that queue? Or should each user's workstation find the network printers directly and install any required drivers or ppd files? And if using a machine as a queue does that mean clients can send print jobs to the queue w/o having to have any specific drivers or ppd files for the printers that are connected to the queue machine? 4) And if clients use network printers directly (instead of via some queue machine) what happens when the printer's IP address changes? [1] <a href="http://ubuntuforums.org/showthread.php?t=759744">http://ubuntuforums.org/showthread.php?t=759744</a> <a href="http://ubuntuforums.org/showthread.php?t=38979">http://ubuntuforums.org/showthread.php?t=38979</a> -- Bill Moseley <a href="mailto:moseley@hank.org">moseley@hank.org</a>