Plugin installation failed in hplip-3.20.9 & ubuntu

[Dominique PAUL]

Hello,

Problems
In some circonstances, hp-plugin command ends with this line: "Plugin installation failed".
In the same circonstances, somes libraries for hp-plugin are missing.
I use workarounds.

Environment
hplip-3.20.9
xubuntu 18.04 (LTS), in a virtualbox
HP Deskjet 2700 series

Circonstances
The printer was added via the hp-setup command.
i.e. 2 cases:
- after running hplip-3.20.9.run
- the printer was removed, then re-added via hp-setup.
This bug DONT happens if the printer was added by hplip-3.20.9.run.

Missing libraries
I use "hp-plugin -i -g -p hplip-3.20.9-plugin.run" command to see the missing libraries
One can see them in debug log of hp-plugin; there are several lines like this below:
hp-plugin[1466]: debug: Either /usr/lib/i386-linux-gnu/sane/hpgt2500_ntdcmsdll.so file is not present or symbolic link is missing

Missing libraries workaround
2 commands:
- sudo ln -s /usr/lib /usr/lib/i386-linux-gnu
- sudo ln -s /usr/lib64 /usr/lib64/x86_64-linux-gnu

Plugin installation failed workaround
Before hp-plugin command
- sudo apt install apparmor-utils
- sudo aa-disable /usr/share/hplip/plugin.py
Warning: the others .py are also disabled.

Note
This kinds of problem is old: I have found workarounds on the net.
But they remain in hplip-3.20.9 for ubuntu.

Steps to recreate the problems

- create a vbox; take care of usb filter
- install xubuntu 18.04 in the vbox
- verify usb
-- plug the printer, power on the printer
-- type "lsusb", the printer must be in the list

- uninstall the ubuntu hplip 3.17.10:
-- sudo apt-get purge hplip hplip-data hplip-doc hplip-gui hpijs-ppds libsane-hpaio printer-driver-hpcups printer-driver-hpijs
-- sudo rm -rf /usr/share/hplip/
-- sudo apt-get autoremove

- download hplip 3.20.9, i.e.:
-- hplip-3.20.9-run
-- hplip-3.20.9-run.asc
-- hplip-3.20.9-plugin.run
-- hplip-3.20.9-plugin.run.asc
put them in a temporary directory, and do the gpg verifications

- in a terminal, execute hplip-3.20.9-run
-- when there is a question in the terminal, accept (tape enter) until "RESTART OR RE-PLUG IS REQUIRED"
-- on "RESTART OR RE-PLUG IS REQUIRED", exit by RESTART
- restart the vbox

- setup the printer via the hp-setup command

- install the plugin
-- getting a key from pgp.mit.edu can be very long; give preventively the key from another server:
/usr/bin/gpg --homedir /home/<user>/.hplip/.gnupg --no-permission-warning --keyserver pool.sks-keyservers.net --recv-keys 0x4ABA2F66DBD5A95894910E0673D770CDA59047B9
-- in a terminal, from the temporary directory, type "hp-plugin -i -g -p hplip-3.20.9-plugin.run"
-- One can see the lines about missing libraries.
-- Stop the script (Ctrl C)
-- apply the Missing libraries workaround (see above)
-- in a terminal, from the temporary directory, type "hp-plugin -i -g -p hplip-3.20.9-plugin.run"
-- there is no line about missing libraries.
-- if popup "Unable to recieve key from server" "Do you still want to install the plug-in?", answer yes
-- accept the conditions, give the sudo password
-- the script finish with theses lines:
Plugin installation failed
error: Plugin installation failed

- apply the Plugin installation failed workaround (see above)
- install the plugin
-- in a terminal, from the temporary directory, type "hp-plugin -i -g -p hplip-3.20.9-plugin.run"
-- if popup "Unable to recieve key from server" "Do you still want to install the plug-in?", answer yes
-- accept the conditions, give the sudo password
-- the script finish with no line like "Plugin installation successful" or "Plugin installation failed".
- do a scan

[shivani mandora (shivani1708)]

Hi ,

Can you install plugin using below command instead of hp-plugin:

$sh hplip-3.20.9.plugin.run

Let me know the results.

[Dominique PAUL (domjcpa)]

Hi,

No errors
After that, I can scan.

Le 09/10/2020 à 09:41, shivani mandora a écrit :
> Hi ,
>
> Can you install plugin using below command instead of hp-plugin:
>
> $sh hplip-3.20.9.plugin.run
>
> Let me know the results.
>

[shivani mandora (shivani1708)]

Hi ,

If your issue is resolved , can you please close the bug?

[Dominique PAUL (domjcpa)]

Hi,

Thank you for your alternative way. But the bug remains: ht-plugin
fails. Other people than me can be impacted.
If a close the bug, can this bug be fixed?

Le 12/10/2020 à 07:36, shivani mandora a écrit :
> Hi ,
>
> If your issue is resolved , can you please close the bug?
>
> ** Changed in: hplip
> Status: New => In Progress
>