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I've used my old HP Laserjet 4050 with Ubuntu 16.04 without problems so far. It just appeared when I connected my computer to my home-network. But recently, in order to test a HP Deskjet 1010, I had to install HPLIP from sourceforge, as far as I remember. And now, nothing works anymore. Firts, the printer was 'paused' and no it gives an error. There seems to be something missing, but how do I get it there?

Screendump from my cups interface: CUPS 2.1.3

Jan80TRS
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    Possible duplicate of https://askubuntu.com/questions/1056077/how-to-install-latest-hplip-on-my-ubuntu-to-support-my-hp-printer-and-or-scanner/1056078#1056078 If you already had HPLIP installed then adding it again may be the cause of your problem.. Uninstall it and re-install HPLIP as outlined in the posted link. – graham Sep 28 '19 at 15:35
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    Possible duplicate of How to install latest HPLIP on my Ubuntu to support my HP printer and/or scanner? . According to HPLIP page you need the following versions: at least 0.9.5 for laserjet and 3.13.7 for deskjet. Consider to uninstall binary HPLIP and then install deb-packaged variant. – N0rbert Sep 28 '19 at 19:13
  • @Graham: Please (re-)read my original post: I didn't install ANYTHING and yet my networkprinter worked fine. (Ubuntu 16.04) I actually also hooked up a local printer (HP 4P) via USB-to-parallel cable and that also worked fine. Again, no particular installation was needed. It's only AFTER I installed HPLIP that the trouble started. Thanks for the link, I will uninstall HPLIP asap and hope the situation restores itself. – Jan80TRS Sep 28 '19 at 20:43
  • @N0rbert: like I said, why install HPLIP if it already worked without it? Maybe with a minimal CUPS system already present in U16.04? Anyway, I'm going to try to uninstall it according to Graham's link, and if that doesn't work, I'll try re-installing the deb-package. I didn't see that when I was looking for it. Where can I find it ? Thanks for the pointers, Il'' get to work. – Jan80TRS Sep 28 '19 at 20:47
  • Sorry, some further reading showed that even 16.04 comes with an older version of HPLIP. I'll follow the instructions and report back here. – Jan80TRS Sep 28 '19 at 20:57
  • I've uninstalled as much as I can, I've removed all printer definitions and manually cleaned out the directcories as stated in the link. Re-installing restored functionality. Good. But all is not well. Now I have an error at bootup, and an error each time I want to print. Give credit where credit is due: in Windows most programs give a warning when you are installing another (newer) version. No such thing in Linux. Sad. – Jan80TRS Oct 01 '19 at 06:50

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