Scanner not working anymore

General system Newbie
1

Hi, my scanner stop working after update my system (canot find scanner anymore)

i also had a printing problem before and remember some apps should be the same version, looked-up my old topic try the commands for same version but not working also ,is there a way for telling the system to keep same versions … so my printer and scanner keep on working fine ? i downgrade 3 times “cups” to different versions and nothing works so waiting again for when to work now or hoping there is help for this ? i try install “sane - cups” again ,tried also hplip and xsane but nogo… printing keeps working good

HP-ENVY-6400-SERIES

(edit) version cups 2:2.4.16-2 , version hplip 1:3.25.8-5 , version sane 1.4.0-4

Also for my still newby problem can you please put here the commands for searching en helping myself out for i get the same problem from time 2 time … thank you

i know one from before (example) < > systemctl status cups.service

2

Not sure but try running the hplip set up again in case it has a mismatched version.

sudo hp-setup -i

Edit: You maybe also should restart cups after.

sudo systemctl restart cups

3

i did sudo hp-setup -i and it started to configure and testprint in the end ,but the scanner still not working (printing worked also before) i need the scanner to work this is the problem (did not restart cups)

4

Is your user in the scanner group?

Edit:

sudo gpasswd -a YourUsername scanner

Edit the file /etc/sane.d/dll.conf and uncomment the line:

#hpaio

Edit: If hpaio is not in the file you have to add it.

Test the scanner with

hp-scan

5

I believe that printer requires a plugin, so each time hplip is updated, you may need to run this command to install the plugin, following the defaults:

hp-plugin

It will prompt you for your sudo password when needed. That command runs the graphic version of hp-plugin, which I’ve found sometimes works better than the interactive version with the license agreement, though you can try either. The interactive command is:

hp-plugin -i

With the HP printers that require a plugin, printing often works fine out-of-the-box even without installing the plugin, but the scanner requires the plugin, and if hp-setup doesn’t pull in the plugin, your scanner won’t be found.

6

I assumed the plugin was installed? :thinking:

Edit:
@zero1976
Is the plugin installed?

yay -S hplip-plugin

7

ricklinux

zero1976

1h

Is your user in the scanner group?

Edit:

sudo gpasswd -a YourUsername scanner

Edit the file /etc/sane.d/dll.conf and uncomment the line:

#hpaio

Edit: If hpaio is not in the file you have to add it.

Test the scanner with

hp-scan

i did and then this i get < > error: No device selected/specified or that supports this functionality.

(edit) the hplip is installed ,did run hp-plugin -i and installed again but still nogo

8

Is the printer hooked to usb or is it WiFi?

9

usb (edit) it worked fine before last system update ,then not anymore

10

Try running hp-plugin -u

11

did this and again nogo ? maybe reboot first ?

12

I’m not sure what was in the last updates that would have affected it. If you wanted you could revert back to before you updated using eos-shifttime

13

You can try?

14

and how i do this ? (edit first try rebbot)

15

Just use the command
eos-shifttime

Then select the date that is right before you updated.

Screenshot_20260221_124317
Screenshot_20260221_124317569×486 25.9 KB

16

in the beginning i kept track off every update but not anymore… so not sure off the date is this impotant ? (edit reboot did not work)

17

Well i have no idea what update caused the issue. I was hoping it was the last time you updated?

18

am not sure but i think i updated more then 1 time (edit) need to go first now am back later… thank you for helping so far already and i hope we can fix it again…

19

@zero1976, Maybe my post is useless.
I tested with an old Canon MX340.
USB worked and in LMDE 7 by wifi as well.
In EnOS wayland I switched off firewall similar case in the past.
Now with
simple-scan -d
wifi mode is unreliable here but out of 5 attempts at least 1 scan is successful.

Finally, if you are planning a reinstall IMHO BTRFS Snapshots are well worth it.

20

Thank you eso for advise ,my old hp printer worked fine always on every system but this new one pfff omg. (edit) if this problem is not getting solved am back to scanning with my laptop… )