[GRLUG] Print Server on Fedora 15

[Adam Tauno Williams]

On Thu, 2012-01-19 at 06:58 -0500, Eric Beversluis wrote:
> On Wed, 2012-01-18 at 18:07 -0500, Eric Beversluis wrote:
> > I've got a new Trendnet TE100-P1U print server. I've got it working in
> > Windows and am now trying to get it working on my Fedora 15 box.
> > cups (localhost:631/admin/)=> Add Printer =>Discovered Network Printers:
> > PS-742289-U1 => I selected the PS-... and Continue => I entered name,
> > location and cups had the Connection:
> > Name: Brother-HL1440-Network
> > Location: Trendnet Networked Server
> > Connection: dnssd://PS-742289-U1._printer._tcp.local/
> Selected Foomatic/hl1250 (en) and continued. Printer shows as installed
> > and shows up as an option in gedit, but then the job hangs at
> > "Connecting to printer...".
> I went into system-config-printer, clicked on the Brother-HL1440-Network
> icon (which had a !-warning triangle) and then to "Server" menu and
> clicked "Connect." This removed the warning from the network HL icon.
> Went back into Trendnet config screen and disabled the "alt port:81"
> setting. This didn't help with printing.
> Went into printer settings ->Device URI -> Change. Then selected
> "LPD/LPR Host or  Printer" and entered the "Location of the LPD network
> printer" (192.168.2.105). I was then able to print the test page from
> the Cups dialog.
> Also successfully printed from gedit.
> The " dnssd://PS-742289-U1._printer._tcp.local/" connection on the
> cups/administration page for the network HL1440 has been replaced by
> 'lpd://192.168.2.105".  It seems to work, but it's not clear why, or
> whether this is the "best" arrangement.

If the printer supports IPP that is hands-down the best arrangement.
With IPP you can [doesn't mean you will] establish bi-direction
communication with the printer; this means things like the cancel job
button on the printer can work as expected, etc...  For large jobs that
frequently won't work for LPD style printer and won't work for 9100
[socket] printing. 

> Experiment: in cups went to modify printer; selected "ipp" and entered
> "socket://192.168.2.105", leaving the default port at 9100. This worked
> too.

Urg?  You may have selected IPP but socket://... isn't an IPP UNC, that
is a 9100 [socket] printing UNC.  On the other hand 9100 printer almost
always works - you just loose some possible features.

> So there's something misleading about the "Discovered Network Printer"
> and the assumption that one should select it in the setup process.

I never use "Discovered Network Printer".  DNSSD is an *awesome* idea
and a sensible technology.... usually tragically implemented.
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