[SOLVED] CUPS Not DETECTING PRINTERS in LAN

My laptop Lenevo G50-70 is connected in a LAN. The cups installed in my slackware do not detect printers installed in other computers those which are part of this LAN. I was able to do this while other linux OS was installed in my LAP.
Available details.
bash-4.3$ cups-config --version
2.1.4

bash-4.3$ sudo netstat -plnt | grep 631
Password:
tcp 0 0 0.0.0.0:631 0.0.0.0:* LISTEN 1217/cupsd
tcp6 0 0 :::631 :::* LISTEN 1217/cupsd
bash-4.3$ nmap localhost

Starting Nmap 7.12 ( https://nmap.org ) at 2019-08-27 08:56 IST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000052s latency).
Not shown: 995 closed ports
PORT STATE SERVICE
22/tcp open ssh
37/tcp open time
53/tcp open domain
113/tcp open ident
631/tcp open ipp

Nmap done: 1 IP address (1 host up) scanned in 0.14 seconds
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I am not an expert. The output of the commands which I got on net search is copy pasted.

Hi,

I have CUPS running normally on my Slackware and all my outputs to the same commands you ran look very similar. I also have the "631/tcp open ipp" and all the "LISTEN" at the top.

I suggest you try adding the printer using http://localhost:631 in a browser. In case it asks for administrative permission, the username is "root" and the password is your password for root.

Add it as a socket printer with the proper address of the printer on your network, such as the example below:

socket://172.23.5.60

Just make sure you enter which printer it is correctly, else the driver will not work.

All the best.

The same printers were seen by my cups without installing them, while I was using ubuntu in my lap. My doubt is why my cups do not detect printers connected to computers where my lap top is part of the same LAN.

I think this happens because you haven't started the cups-browsed daemon (by default it doesn't start at boot): just

chmod +x /etc/rc.d/rc.cups-browsed
/etc/rc.d/rc.cups-browsed start

I think this happens because you haven't started the cups-browsed daemon (by default it doesn't start at boot): just Code: chmod +x /etc/rc.d/rc.cups-browsed /etc/rc.d/rc.cups-browsed start

bash-4.3$ sudo /etc/rc.d/rc.cups-browsed start
Password:
/etc/rc.d/rc.cups-browsed: line 119: /usr/sbin/cups-browsed: No such file or directory
cups-browsed: started.

The problem still exists.

Originally Posted by ponce I think this happens because you haven't started the cups-browsed daemon (by default it doesn't start at boot): just chmod +x /etc/rc.d/rc.cups-browsed /etc/rc.d/rc.cups-browsed start

don't use sudo to interact with the system, do it as root: re-execute the above commands from a root shell (you become root with "su -", note the space and the dash).

in your case sudo doesn't add /usr/sbin to your environment $PATH variable, so the command fails.

@ponce : you can't change permissions on system's startup scripts as user, you have to do it as root: re-execute the above commands from a root shell (you become root with "su -", note the space and the dash). in your case sudo doesn't add /usr/sbin to your environment $PATH variable, so the command fails.

root@gopan:~# chmod +x /etc/rc.d/rc.cups-browsed
root@gopan:~# /etc/rc.d/rc.cups-browsed start
/etc/rc.d/rc.cups-browsed: line 119: /usr/sbin/cups-browsed: No such file or directory
cups-browsed: started.
root@gopan:~#

/usr/sbin/cups-browsed is part of the package cups-filters: as you have the /etc/rc.d/rc.cups-browsed file in your system and this is part of the same package, I suppose you installed this package and then uninstalled it (for which reason I have no idea) or your filesystem got corrupted or whatever else...
try reinstalling it.

Originally Posted by ponce /usr/sbin/cups-browsed is part of the package cups-filters: as you have the /etc/rc.d/rc.cups-browsed file in your system and this is part of the same package, I suppose you installed this package and then uninstalled it (for which reason I have no idea) or your filesystem got corrupted or whatever else... try reinstalling it.

Thank you very much! I tried to reinstall cups. This might Have been the reason. Now, How can I rectify this?

as I wrote above try reinstalling cups and the cups-filter package: if you are using slackpkg you can do it with (from a root shell)

slackpkg install cups
slackpkg reinstall cups

Originally Posted by ponce as I wrote above try reinstalling cups and the cups-filter package: if you are using slackpkg you can do it with (from a root shell) slackpkg install cups slackpkg reinstall cups

There you are!!!
root@gopan:~# chmod +x /etc/rc.d/rc.cups-browsed
root@gopan:~# /etc/rc.d/rc.cups-browsed start
cups-browsed: started. [ OK ]
root@gopan:~#
Print not ready, but hope is there!

Originally Posted by ponce as I wrote above try reinstalling cups and the cups-filter package: if you are using slackpkg you can do it with (from a root shell) slackpkg install cups slackpkg reinstall cups

Thank you!
Now, my printer detects one of the printers in the network !

Originally Posted by gopakumarpb Thank you! Now, my printer detects one of the printers in the network !

Thank you !
Now, I am marking this as solved!