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    Error in HPLIP -- Unable to create io-slave

    When adding a file to a fax to be sent, from the dialogue box of the HPLIP Fax Utility,
    I get the following error:
    Unable to create io-slave. Can not create socket for launching io-slave for protocol 'file'.

    I tried changing the KDE default file manager to Thunar, but HPLIP still seems to be using Dolphin. I think the issue might be with Dolphin, so if I could get HPLIP to use a different file manager, it might help.

    It is still possible to fax a file by opening it in an application, then print, then select the fax printer. However, only one file can be sent at a time that way.

    HPLIP 3.20.5, device manager version 15.0 (Qt4)

    Operating System: Kubuntu 20.04
    KDE Plasma Version: 5.18.5
    KDE Frameworks Version: 5.68.0
    Qt Version: 5.12.8
    Kernel Version: 5.4.0-33-generic
    OS Type: 64-bit
    Processors: 8 × Intel® Core™ i7-9700 CPU @ 3.00GHz
    Memory: 15.5 GiB of RAM
    Last edited by shmu26; Jun 07, 2020, 11:15 PM.

    #2
    Have you run
    Code:
    hp-check
    against your current setup?

    It may reveal some driver/module issues. I don't know if that will fix your problem, since I don't use my HP for faxing, but I do know that the hp-check utility has helped me to fix printing issues with my setup.
    The next brick house on the left
    Intel i7 11th Gen | 16GB | 1TB | KDE Plasma 5.27.11​| Kubuntu 24.04 | 6.8.0-31-generic



    Comment


      #3
      Originally posted by jglen490 View Post
      Have you run
      Code:
      hp-check
      against your current setup?

      It may reveal some driver/module issues. I don't know if that will fix your problem, since I don't use my HP for faxing, but I do know that the hp-check utility has helped me to fix printing issues with my setup.
      No errors found

      Comment


        #4
        I installed XFCE desktop on the same system, with the same user account, for testing purposes, and I don't see the issue in XFCE. So it definitely seems to be KDE-related.

        Comment


          #5
          For whatever reason, HP's software is not accessing KDE's (or more likely Qt's) file chooser (it is not Dolphin, though it looks similar) - which of course would not normally be used in a Qtk envirionment such as Xfce. The issue is figuring out why, especially since this specific bug does not look to have been reported anywhere I can find.

          I have seen this exact same error message in the past, here on KFN, but it was for a version of the KDE Partition manager, and was a known bug in that particular piece of software at the time.
          I'd try and check things myself, but my ancient 12+ year old photosmart died a few months back

          Comment

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