Have two printers--HP and Epson--which were both working. Was looking at a pdf in Okular, and tried to print it using the little printer icon in the panel. It showed four items in the print queue, which I can't account for, but I think I got rid of them with the options available. Would not print. Tried the other printer, same routine, won't print. Now tried printing with each printer from a text in Kate. Neither printer will print. No error message. The Epson has a scanner function, and that still works. ( I don't know why there is a printer icon in the panel, if it's not going to print.) Here is an nmap report on the LaserJet: doug@linux1:~> nmap --reason 192.168.1.29 Starting Nmap 7.80 ( https://nmap.org ) at 2021-01-04 15:55 EST Nmap scan report for 192.168.1.29 Host is up, received syn-ack (0.0066s latency). Not shown: 992 closed ports Reason: 992 conn-refused PORT STATE SERVICE REASON 21/tcp open ftp syn-ack 23/tcp open telnet syn-ack 80/tcp open http syn-ack 443/tcp open https syn-ack 515/tcp open printer syn-ack 631/tcp open ipp syn-ack 8080/tcp open http-proxy syn-ack 9100/tcp open jetdirect syn-ack A similar output for the Epson, but I already know that's on line as a scanner. I don't know how to troubleshoot or fix this. Please advise. --Doug
Hi Doug, On Mon, Jan 04, 2021 at 04:00:42PM -0500, Doug McGarrett wrote:
Have two printers--HP and Epson--which were both working. Was looking at a pdf in Okular, and tried to print it using the little printer icon in the panel. It showed four items in the print queue, which I can't account for, but I think I got rid of them with the options available. Would not print. Tried the other printer, same routine, won't print. Now tried printing with each printer from a text in Kate. Neither printer will print. No error message. The Epson has a scanner function, and that still works.
Maybe there are jobs stuck in the queues or something's gone wobbly with a filter. $ lpq -a will show all the print queues and maybe give you a hint And as it sounds like you've already found you can cancel individual and bulk jobs using the 'cancel' command But the easiest way is usually to connect to your own machine and look at what CUPS thinks is going on. Just launch a browser and connect to port 631 on your machine by entering this into the address bar: localhost:631 You might be prompted to login with the root password to that page. Usually you can navigate at the top of the page to "Printers" and "Jobs" to work out what's going on. I guess you'll probably have two print queues setup, one for the Epson & one for the HP. In the "Printers" tab see what the "Status" field says. If you click on the name of the print queue, you'll have two drop-downs for "Maintenance" & "Administration". Sometimes you might just need to "Resume" a printer (under Maintenance) if it had a temporary fault, such as out of paper, jammed or a door open etc. I think the default config waits for an admin to intervene if there's a fault - logical in a big/corporate setup but quite irritating when the printer is sat at the other end of your desk and you can see it ran out of paper and now have to launch a browser and login and tell CUPS to tell the printer to resume. Resist making changes under Administration at this stage, if both printers worked before then it's a bit odd that the two have stopped together, but not unknown (typically file permissions or broken filters). If your printers are hooked up via ethernet and your network/router has re-assigned their addresses (DHCP) then that can cause this kind of breakage. As can forgetting that you (or someone else) unplugged/re-routed the USB/Ethernet cables when tidying the desk before Christmas. Daniel
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Daniel Morris -
Doug McGarrett