[cups.bugs] lpoptions -l on remote printer class returns error on localhost

[Michael Sweet]

Please file a bug; basically, the remote class isn't getting resolved  
through to the server, so cupsGetPPD can't find the printers or their  
PPDs.

     http://www.cups.org/str.php

On Jul 14, 2009, at 5:47 PM, Brian Kroth wrote:
> Here is essentially the problem: classes presented to a host through  
> browsing
> don't return the printer options (like duplex capabilities) by  
> default.
> When issued on the command line, the following error occurs:
>
> # lpoptions -h localhost -p cae-170-laser -l
> lpoptions: Unable to get PPD file for cae-170-laser: No printer-uri  
> found for class!
>
> In more detail the situation is this:
> - A remote print server, printserver, that has a class, cae-170-laser,
>  with members, cae-170-laser[12].  The members are not shared  
> (though I
>  have tried this with them shared with the same results), so they  
> don't
>  show up in the available printers list, but the clients can still
>  access them directly if they know about them.
>
> - The clients receive browsing information by BrowsePoll
>  printserver.cae.wisc.edu.
>
> - Everyone's running Debian Lenny's cups 1.3.8-1+lenny6.
>
> Now, if I issue the following on client (ie: simulating what a
> gui applications is doing), it throws an error:
> # lpoptions -h localhost -p cae-170-laser -l
> lpoptions: Unable to get PPD file for cae-170-laser: No printer-uri  
> found for class!
>
> However, if I ask the server directly, it works:
> # lpoptions -h printserver -p cae-170-laser -l
> PageSize/Page Size: *Letter A4 11x17 A3 A5 B5 Env10 EnvC5 EnvDL  
> EnvISOB5 EnvMonarch Executive Legal
> PageRegion/PageRegion: Letter A4 11x17 A3 A5 B5 Env10 EnvC5 EnvDL  
> EnvISOB5 EnvMonarch Executive Legal
> Resolution/Resolution: *default 150x150dpi 300x300dpi 600x600dpi  
> 1200x1200dpi
> InputSlot/Media Source: *Default Tray1 Tray2 Tray3 Manual
> Duplex/Double-Sided Printing: *DuplexNoTumble DuplexTumble None
>
> # lpoptions -h printserver -p cae-170-laser1 -l
> PageSize/Page Size: *Letter A4 11x17 A3 A5 B5 Env10 EnvC5 EnvDL  
> EnvISOB5 EnvMonarch Executive Legal
> PageRegion/PageRegion: Letter A4 11x17 A3 A5 B5 Env10 EnvC5 EnvDL  
> EnvISOB5 EnvMonarch Executive Legal
> Resolution/Resolution: *default 150x150dpi 300x300dpi 600x600dpi  
> 1200x1200dpi
> InputSlot/Media Source: *Default Tray1 Tray2 Tray3 Manual
> Duplex/Double-Sided Printing: *DuplexNoTumble DuplexTumble None
>
> # lpoptions -h printserver -p cae-170-laser2 -l
> PageSize/Page Size: *Letter A4 11x17 A3 A5 B5 Env10 EnvC5 EnvDL  
> EnvISOB5 EnvMonarch Executive Legal
> PageRegion/PageRegion: Letter A4 11x17 A3 A5 B5 Env10 EnvC5 EnvDL  
> EnvISOB5 EnvMonarch Executive Legal
> Resolution/Resolution: *default 150x150dpi 300x300dpi 600x600dpi  
> 1200x1200dpi
> InputSlot/Media Source: *Default Tray1 Tray2 Tray3 Manual
> Duplex/Double-Sided Printing: *DuplexNoTumble DuplexTumble None
>
> I've worked around the problem for the moment by adding "ServerName
> printserver" to /etc/cups/client.conf, but that sort of defeats the
> whole point of polling.  Is this a bug?  Is there a fix?
>
> Also, I stumbled across this in my searching, which seemed a little
> similar:
> https://bugzilla.redhat.com/show_bug.cgi?id=499687
>
>> From the strace I did it seemed to be making an IPP request to
> ipp://localhost/printers/cae-170-laser rather than
> /classes/cae-170-laser as I would have excpected.  Don't know if  
> that's
> anything though.
>
> Thanks,
> Brian
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___________________________________________________
Michael Sweet, Senior Printing System Engineer