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  1. Qt
  2. QTBUG-80323

[REG] XCB: Moving window between screens with different DPR doesn't change the scale

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Details

    • Linux/X11
    • c7fec68e1936576070d0fbac6cf40b818366d298 (qt/qtbase/5.14)

    Description

      We have two screens, 3840x2160 (DPR 2) and 1920x1080 (DPR 1).

       

      Run the application with Qt 5.12.6 and "Qt::AA_EnableHighDpiScaling" enabled. Ensure that the application is running on HiDPI screen with a scale > 1.0 (2.0 for example). Move the window to second screen and notice that nothing happens: the window still has scale 2.0 instead of 1.0.

       

      It worked on Qt 5.12.4.

      Attachments

        1. QTBUG-80323-xcb.tar.gz
          1 kB
        2. qtdiag-5.12.4.txt
          8 kB
        3. qtdiag-5.13.2.txt
          8 kB

        Issue Links

          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-81532 [5.14.1 regression] xrdb values on Plasma not loaded

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
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              sorvig Morten Sørvig
              zaps166 Błażej Szczygieł
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                Resolved:

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