I can't recall if CUPS found the printer, or I entered it. I have been
living with this problem for a while.
I ran the tests.
I do not have DNS running, so those commands failed.
The other commands worked as expected.
Results of lpinfo -v:
network socket
network http
network ipp
network ipp14
network lpd
serial serial:/dev/ttyS0?baud=115200
network https
network ipps
direct hp
network smb
direct hpfax
network lpd://192.168.0.20:515/PASSTHRU
--
Stephen
On 16-05-27 12:12 PM, Allan Zhang wrote:
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Did the printer show up when you wirelessly added it in CUPS, or did you
manually add it using the known IP?
Maybe CUPS doesn't see it.
Wiki page here:
https://wiki.ubuntu.com/DebuggingPrintingProblems
Relevant part of wiki:
Open a terminal/console and run the commands:
$ ping <IP of the printer>
$ nmap <IP of the printer>
Replace "<IP of the printer>" by the printer's IP address. The first command checks
whether you can access the printer through the network, the second shows which port numbers are used by
the printer and through this which protocols are active (80: Has web interface, 139: SMB, 443: encrypted
IPP or encrypted web interface, 515: LPD, 631: IPP, 9100: JetDirect/AppSocket). Install the
"nmap" package if needed.
Run the commands:
$ /usr/lib/cups/backend/snmp
$ sudo /usr/lib/cups/backend/dnssd
The output shows whether the printers get found by CUPS or
system-config-printer and with which device URIs and protocols.
Run the command
$ /usr/lib/cups/backend/snmp <IP of the printer>
if a printer does not get found by the simple "/usr/lib/cups/backend/snmp" call.
Find out if your printer gets detected by CUPS:
$ lpinfo -v
- -------- Original Message --------
From: Stephen <[email protected]>
Sent: May 27, 2016 11:44:08 AM EDT
To: GTALUG Talk <[email protected]>
Subject: [GTALUG] Printing Problem - Can't find printer
I am using Ubuntu 14.04
Printer is Epson WF-2630
Wi-fi connection. Hard coded IP address
When I try to print, I get a Gnome pop-up saying printer is off-line.
Using the web interface to CUPS the reported error is printer not found.
I can always ping the printer.
I can always print from a windows computer on the same network.
I can, from the CUPS web interface "modify" the printer settings. I
click through without changing anything.
When I am finished, the stalled print job is printed.
Any ideas how I can print without "modifying" the printer settings?
- --
Stephen
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