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  1. Qt
  2. QTBUG-103488

Bad font antialiasing for Qt6 applications

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • 6.2.3
    • GUI: Font handling
    • None
    • XFCE
    • Linux/X11

    Description

      Environment:

      OS: Fedora 36
      DE: XFCE
      Font: Windows Tahoma
      Font config: fonts.conf
      $XDG_CURRENT_DESKTOP=XFCE
      Qt6-6.2.3-2.fc36

      Problem: Qt6 applications seemingly do not use my fontconfig settings (which are used for everything else, including XFCE, GTK2/3/4 and Qt3/4/5 applications, and web browsers).

      I've used strace -e file and $HOME/.config/fontconfig/fonts.conf is indeed being read but it's not seemingly used correctly.

      I do not see any error messages in console from Qt6 applications.

      I have a suspicion something in terms of fonts support in Qt6 has changed drastically but I haven't been able to find anything.

      Check the attached screenshots for the difference.

       

      Attachments

        1. qtdiag6.log
          11 kB
        2. qtdiag5.log
          9 kB
        3. qt6.png
          qt6.png
          54 kB
        4. qt56.png
          qt56.png
          16 kB
        5. qt5.png
          qt5.png
          38 kB
        6. qt5_vs_qt6.png
          qt5_vs_qt6.png
          15 kB
        7. qbittorrent_qt6.png
          qbittorrent_qt6.png
          41 kB
        8. qbittorrent_qt5.png
          qbittorrent_qt5.png
          40 kB
        9. q_env_unset.png
          q_env_unset.png
          67 kB
        10. fonts.conf
          0.6 kB
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        Activity

          People

            sorvig Morten Sørvig
            birdy Artem S. Tashkinov (Inactive)
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            Dates

              Created:
              Updated:

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