Missing Driver Settings tab in KDE print dialog

[JLP]

> OK, I have run the command
> lpoptions -p K550 -l
>
> On my desktop I get:
> lpoptions: Destination K550 has no PPD file!
>
> But if I do the same on my laptop (where the tab is visible) and for the same shared printer I get some output about paper size and a lot of other stuff.
>
> So it looks like my desktop computer can't get the PPD properties, but the laptop can. What could be different on these clients? I can't see any IP setting in the cupsd.conf on server that would treat desktop (192.168.0.2) differently than laptop (192.168.0.5 or 192.168.0.6). So I guess there is something on the client computers that make the difference.

And here is the CUPS access log after runing the command on both computers:

192.168.0.6 - - [13/Sep/2006:02:07:31 +0200] "POST / HTTP/1.1" 200 350 CUPS-Get-Printers successful-ok
192.168.0.6 - - [13/Sep/2006:02:07:31 +0200] "POST / HTTP/1.1" 200 350 CUPS-Get-Classes successful-ok
192.168.0.6 - - [13/Sep/2006:02:07:31 +0200] "POST / HTTP/1.1" 200 80 CUPS-Get-Default successful-ok
192.168.0.6 - - [13/Sep/2006:02:07:31 +0200] "POST / HTTP/1.1" 200 199 Get-Printer-Attributes successful-ok
192.168.0.6 - - [13/Sep/2006:02:07:31 +0200] "GET /ppd/K550.ppd HTTP/1.1" 200 20818 - -
192.168.0.2 - - [13/Sep/2006:02:07:40 +0200] "POST / HTTP/1.1" 200 350 CUPS-Get-Printers successful-ok
192.168.0.2 - - [13/Sep/2006:02:07:40 +0200] "POST / HTTP/1.1" 200 350 CUPS-Get-Classes successful-ok
192.168.0.2 - - [13/Sep/2006:02:07:40 +0200] "POST / HTTP/1.1" 200 75 CUPS-Get-Default successful-ok
192.168.0.2 - - [13/Sep/2006:02:07:40 +0200] "POST / HTTP/1.1" 200 199 Get-Printer-Attributes successful-ok

It looks like the desktop which doesn't have the tab doesn't have the line containing "GET /ppd/K550.ppd HTTP/1.1"