I have the same issue after the latest dapper update. Here is the relevant portion of /var/log/cups/error_log:
E [11/Apr/2006:21:11:53 -0400] CUPS-Add-Printer: Unauthorized E [11/Apr/2006:21:11:53 -0400] copy_model: empty PPD file! E [11/Apr/2006:21:11:53 -0400] PID 5218 stopped with status 1! E [11/Apr/2006:21:11:53 -0400] [cups-driverd] Unable to open "/usr/share/ppd/������" - No such file or directory E [11/Apr/2006:21:27:11 -0400] cupsdLoadAllClasses: Unable to open /etc/cups/classes.conf - No such file or directory E [11/Apr/2006:21:27:11 -0400] LoadAllSubscriptions: Unable to open /etc/cups/subscriptions.conf - No such file or directory E [11/Apr/2006:21:29:37 -0400] [cups-driverd] Unable to open driver directory "/usr/lib/cups/driver": No such file or directory If I manually overwrite /etc/cups/printers.conf with a pre-update backup copy, the printer shows up in the printers dialog (but won't print). Here's the contents of /etc/cups: lrwxrwxrwx 1 root lpadmin 19 2006-04-11 20:32 certs -> /var/lib/cups/certs -rw-r--r-- 1 root root 2204 2006-03-09 04:45 client.conf -rw-r--r-- 1 root root 1215 2006-02-06 13:34 command.types drwxr-xr-x 2 root root 4096 2006-03-26 12:37 cups.d -rw-r--r-- 1 root root 2361 2006-04-10 06:38 cupsd.conf drwxrwsr-x 2 root lpadmin 4096 2006-03-09 04:45 interfaces -rw-r--r-- 1 root root 4515 2006-03-09 04:45 mime.convs -rw-r--r-- 1 root root 6042 2006-03-09 04:45 mime.types -rw------- 1 cupsys lpadmin 18 2006-04-11 20:32 passwd.md5 drwxrwsr-x 2 cupsys lpadmin 4096 2006-04-11 21:04 ppd -rw------- 1 cupsys lpadmin 318 2006-04-11 21:24 printers.conf -rw------- 1 cupsys lpadmin 318 2006-04-03 07:30 printers.conf.O -rw-r--r-- 1 root root 946 2005-11-28 12:49 pstoraster.convs -rw-r--r-- 1 root root 242 2006-03-26 12:37 raw.convs -rw-r--r-- 1 root root 213 2006-03-26 12:37 raw.types drwx------ 2 cupsys lpadmin 4096 2006-03-26 17:55 ssl The log seems to suggest that this might be a permissions-related issue.. -- cups wont add printers https://launchpad.net/malone/bugs/39201 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs