non installed printer can not be removed

[Hans <hans.ullrich@loop.de>]

Hi folks,

I am struggeling with a little problem, I can not explain. 

A friend of mine uses a printer (Samsung SL-C480FW), which is connected to the 
router with wireless. However, although there are no drivers and no ppd-files 
installed, the printer is seen by cups (and also by system-printer-config) but 
can not be used (think, because the missing ppd-file).

When this is installed, udev-entries and so on are set, then the printer is 
seen for example with ipp://192.168.*.*. 

However, printing does not work, although the printer gets data, but then 
hangs. I believe, this is a driver problem (because this appeared, since my 
friend got a new router (FritzBox).

I hope, for this I will find a solution, so hints are welcome, buut not the 
reason for this thread.

Much more I am interested, to know, why I can not delete the printer in CUPS 
or system-config-printer? Any printer I add, can be deleted, but the last 
entry can not be deleted. 

What is wrong? Why does the kernel see the correct printer, and where does it 
get its information? It is not connected at the USB-port, so no information 
could be taken from this.

Any ideas?

Thanks for any help!

Best regards

Hans