[SOLVED] Question Concerning An HP Printer and "cupsext.so"

kevinbenko · 02-04-2019, 11:53 AM

I bought a new laser printer, there is a configuration file/package called "hplip" in/on Debian.

I have a problem with this file called "cupsext.so":

It seems that Debian doesn't have this file in ANY package. BUT I did get a copy from another distribution.

SOOOOO......

I have the "supsext.so" file, I put it (temporarily) in the /lib directory, but I have a question or two.

1: What directory should I put this file?
2: How do I get the system to recognize this file exists. (I probably have to use "ldconfig", but I have run it, but no effect. So, what is the exact command line??)

Thank you for your help, and have a good day!

Altoid · 02-04-2019, 01:04 PM

Hello:

Quote:

Originally Posted by kevinbenko

I bought a new laser printer, there is a configuration file/package called "hplip" ...

Have to ask: have you checked to see if your new laser printer is actually supported by HPLIP at this time?

From https://launchpad.net/hplip:

Quote:

Note: Most HP models are supported, but a few are not. See Supported Devices at the HPLIP website for more information:
https://developers.hp.com/hp-linux-i..._devices/index

If it is not, the other option you can use is CUPS.

https://www.cups.org/

Cheers,

A.

business_kid · 02-04-2019, 01:11 PM

I (On Slackware64) have cupsext.so in /usr/lib64/python3.6/site-packages.

I would suggest it's probably a library relied upon by some python module. Your(booting a VM in your honour) correct location for it might be

/usr/lib/python2.7/site-packages
/usr/lib/python3.6/site-packages

Presuming I have your python versions correct. You can check them running

Code:

python2 --version
python3 --version

ldconfig only outputs mistakes. No output =

ferrari · 02-04-2019, 01:53 PM

Hmmm....AFAIU that should be supplied as part of the hplip package?

Code:

dpkg-query -L hplip

On my RPM-based openSUSE distro, a search of the installed hplip package reports

Code:

/usr/lib64/python3.6/site-packages/cupsext.so

kevinbenko · 02-04-2019, 05:03 PM

Thank you all.

First, the printer is supported by Linux.

I will respond to these replies when I get home.

Altoid · 02-04-2019, 05:22 PM

Hello:

Quote:

Originally Posted by kevinbenko

First, the printer is supported by Linux.

OK ...
Then it is as business_kid says, a python issue.

See here:

https://developers.hp.com/hp-linux-i...bleshootErrors

Quote:

ImportError:No Module named 'cupsext'
Notes:
Extension modules are missing from the current Python path "/usr/lib/python<version>/dist-packages".
This happens when HPLIP is installed using one python version and you are running HPLIP using another python version.

For example, HPLIP was installed using python2.x and running the tools using python3.x

Please ensure to run HPLIP tools using the same version of Python which was used for HPLIP installation or re-install HPLIP from https://developers.hp.com/hp-linux-i...nting/gethplip

Cheers,

A.

kevinbenko · 02-04-2019, 06:29 PM

A weird thing......

I "sort of" have a "cupsext(blahblahblah).so" in my "/usr" directory named:

"/usr/lib/python3/dist-packages/cupsext.cpython-37m-x86_64-linux-gnu.so"

Is THAT the file?

And why is there a bunch of {stuff} in the middle of the file name???

Would it be a good idea to make a link (soft or hard) from THAT file to "cupsext.so" ?????

hydrurga · 02-04-2019, 06:47 PM

Out of interest, why is it that you think you need cupsext.so? Is something reporting it missing?

kevinbenko · 02-04-2019, 08:30 PM

Yes. The HP-provided hplip said it so. It was the, I guess, final process in the script when it "screamed and died"

Also, I made a hard-link from THAT file to cupsext.so

It also failed.

hydrurga · 02-05-2019, 05:33 AM

Quote:

Originally Posted by kevinbenko

Yes. The HP-provided hplip said it so. It was the, I guess, final process in the script when it "screamed and died"

Also, I made a hard-link from THAT file to cupsext.so

It also failed.

Would it be possible to run hplip again (without that hard link) and paste the exact error message here, preferably with the preceding output for context?

kevinbenko · 02-05-2019, 08:08 AM

OK. The final output is:

POST-BUILD COMMANDS
-------------------
su -c "/usr/bin/kill 25185" (Post-build step 1)
su -c "/usr/bin/kill 25186" (Post-build step 2)
su -c "/usr/bin/kill 24580" (Post-build step 3)
su -c "/usr/bin/kill 25169" (Post-build step 4)
su -c "/usr/bin/kill 24581" (Post-build step 5)
warning: CUPSEXT could not be loaded. Please check HPLIP installation.
kevin@Shatner: ~/Desktop

hydrurga · 02-05-2019, 11:04 AM

Quote:

Originally Posted by kevinbenko

OK. The final output is:

POST-BUILD COMMANDS
-------------------
su -c "/usr/bin/kill 25185" (Post-build step 1)
su -c "/usr/bin/kill 25186" (Post-build step 2)
su -c "/usr/bin/kill 24580" (Post-build step 3)
su -c "/usr/bin/kill 25169" (Post-build step 4)
su -c "/usr/bin/kill 24581" (Post-build step 5)
warning: CUPSEXT could not be loaded. Please check HPLIP installation.
kevin@Shatner: ~/Desktop

How did you equate "CUPSEXT" with needing to have cupsext.so? It may well do so, but I'm interested in how you decided that was the case.

Also, what command did you run to generate this error. What are you building?

hydrurga · 02-05-2019, 11:11 AM

It might also be a good idea to do a web search for the exact error message in quotes, i.e."CUPSEXT could not be loaded. Please check HPLIP installation".

kevinbenko · 02-05-2019, 11:29 AM

Yup... Already did that.....

business_kid · 02-05-2019, 01:03 PM

Why not reinstall hplip to be sure to be sure, and run hp-doctor. My printing works fine, but it thinks I'm on Slackware-14.2, my printer is not installed via it's app (I think it was), and that (summarizing) I don't have what I don't want. But it at least checked stuff.