[cups] Re: CUPS refuses to show printer after I modified it

On 2025-08-17 11:22, Gary Dale wrote:
> I'm running Debian/Trixie (13) on amd64 systems. After a couple years 
> of not being able to print from my Debian/Testing workstation to a 
> Debian/Stable server, several months ago the problem resolved itself 
> and I could print again. This was nothing that I deliberately did - it 
> just started working again.
>
> Last week I upgraded my server to Debian/Trixie and the situation 
> continued. However, yesterday I modified a printer (one of three 
> attached to the server) and it vanished from the available printers 
> list. Rebooting the server and workstation fails to resolve the issue. 
> The printer shows up CUPS on the server, along with the other two, but 
> is missing from the print dialogues on my workstation.
>
> I can still print to the other 2 printers.
>
> If I recall correctly, the previous problem was different - the 
> printers would show up but print would vanish when sent to them. In 
> this new version of the problem, the printer simply doesn't show up. 
> And yes, the printer is shared.
>
> Any ideas?
>
> Thanks.
>
>
> BTW: this is a fresh install of Debian 13 on my workstation. The 
> server was upgraded from Debian 12. This morning I switched my 
> workstation to Debian 14 (forky/testing).
>

Thanks for the ideas everyone but the problem is, as always, with CUPS. 
While the CUPS developers are enamoured with ipp and want everyone to 
use it for all their printers, that is not a realistic expectation. 
Meanwhile CUPS continues to fail in various ways for things that should 
just work.


Note that the problem is not hardware. It prints fine from the server 
command line.

Note that the problem is not the printer driver. I didn't change the 
driver. I just modified the default options.

Note that the problem is not with my client. I can print to the other 2 
printers attached to the server, which do show up in the local printer 
dialogues.