Ytdyklly

Ubuntu 18.04.1, HPLIP 3.17.10.

I am attempting to install HPLIP using Synaptic. The installation reports no errors. But, when I start the HP system tray, I get this error message:

File "/usr/bin/hp-toolbox", line 269, in <module>

     QApplication, ui_package = utils.import_dialog(ui_toolkit)

 TypeError: 'NoneType' object is not iterable

Also, the HP icon in the tray area does nothing if I click on it - although I am able to start the HPLIP Toolbox, and that seems to work.

When I run hp-check, it tells me that the following packages are missing/incompatible, and that I need to install them manually:

libnetsnmp-devel

snmp-mibs-downloader

libsnmp-dev

I do not know where to find the first two, nor how to install them manually.

Regarding libsnmp-dev: It is not installed, but via Synaptic versions 5.7.3+dfsg-1.8ubuntu3 and 5.7.3+dfsg-1.8ubuntu3.1 are available to install. However, when I try to install libsnmp-dev via Synaptic, it tells me that the following packages will be removed - but I don't want them to be removed (especially npm):

libssl1.0-dev

node-gyp

nodejs-dev

npm

So, I need some help here: How do I get the missing packages installed, get HPLIP working, get rid of the error message (above), and make the HP system tray to work, without uninstalling npm and those other packages?

I show below the output of the command:

apt-cache policy libssl1.0-dev node-gyp nodejs-dev npm

main1@system1:~$ apt-cache policy libssl1.0-dev node-gyp nodejs-dev npm



libssl1.0-dev:

  Installed: 1.0.2n-1ubuntu5.2

  Candidate: 1.0.2n-1ubuntu5.2

  Version table:

 *** 1.0.2n-1ubuntu5.2 500

        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages

        500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages

        100 /var/lib/dpkg/status

     1.0.2n-1ubuntu5 500

        500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages



node-gyp:

  Installed: 3.6.2-1ubuntu1

  Candidate: 3.6.2-1ubuntu1

  Version table:

 *** 3.6.2-1ubuntu1 500

        500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages

        500 http://archive.ubuntu.com/ubuntu bionic/universe i386 Packages

        100 /var/lib/dpkg/status



nodejs-dev:

  Installed: 8.10.0~dfsg-2ubuntu0.4

  Candidate: 8.10.0~dfsg-2ubuntu0.4

  Version table:

 *** 8.10.0~dfsg-2ubuntu0.4 500

        500 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages

        100 /var/lib/dpkg/status

     8.10.0~dfsg-2ubuntu0.2 500

        500 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages

     8.10.0~dfsg-2 500

        500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages



npm:

  Installed: 3.5.2-0ubuntu4

  Candidate: 3.5.2-0ubuntu4

  Version table:

 *** 3.5.2-0ubuntu4 500

        500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages

        500 http://archive.ubuntu.com/ubuntu bionic/universe i386 Packages

        100 /var/lib/dpkg/status

Terminal output of sudo apt install libsnmp-dev:

main1@system1:~$ sudo apt install libsnmp-dev

[sudo] password for main1:

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following packages were automatically installed and are no longer required:

gyp libjs-async libjs-inherits libjs-node-uuid libuv1-dev node-abbrev
node-ansi node-ansi-color-table node-archy node-async node-balanced-match
node-block-stream node-brace-expansion node-builtin-modules
node-combined-stream node-concat-map node-cookie-jar node-delayed-stream
node-forever-agent node-form-data node-fs.realpath node-fstream
node-fstream-ignore node-github-url-from-git node-glob node-graceful-fs
node-hosted-git-info node-inflight node-inherits node-ini
node-is-builtin-module node-isexe node-json-stringify-safe node-lockfile
node-lru-cache node-mime node-minimatch node-mkdirp node-mute-stream
node-node-uuid node-nopt node-normalize-package-data node-npmlog node-once
node-osenv node-path-is-absolute node-pseudomap node-qs node-read
node-read-package-json node-request node-retry node-rimraf node-semver
node-sha node-slide node-spdx-correct node-spdx-expression-parse
node-spdx-license-ids node-tar node-tunnel-agent node-underscore
node-validate-npm-package-license node-which node-yallist

Use 'sudo apt autoremove' to remove them.

The following additional packages will be installed:

libpci-dev libsensors4-dev libssl-dev libssl-doc libudev-dev libwrap0-dev

The following packages will be REMOVED:

libssl1.0-dev node-gyp nodejs-dev npm

The following NEW packages will be installed:

libpci-dev libsensors4-dev libsnmp-dev libssl-dev libssl-doc libudev-dev
libwrap0-dev

0 upgraded, 7 newly installed, 4 to remove and 7 not upgraded.

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