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  1. Qt
  2. QTBUG-73816

HiDPI setting sometimes lost after suspend

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Details

    • Bug
    • Resolution: Cannot Reproduce
    • P2: Important
    • None
    • 5.9.5
    • QPA: X11/XCB
    • Various kernels, all >=4.18.
      Mint 19.1 Cinnamon.
    • Linux/X11

    Description

      On my Mint 19.1 x64 Cinnamon laptop, HiDPI support drops sometimes after suspend for QT applications. Normally, having the following in my `.profile` suffices to enable HiDPI scaling:

      export QT_AUTO_SCREEN_SCALE_FACTOR=1 # honor screen DPI

      I reported the problem to Mint but the Mint people told me to report the problem to you. As you can imagine, the problem is fairly irritating and seems to be a basic loss of functionality.

      I attach the output of `qtdiag`, run when the 'reversion' (drop of scaling) had occured.

      I use 'qt5 settings'. Previously my earlier efforts to get Qt working had used other lines in .profile and also the application `kvantum`.

      By the way: I chose 'Core: I/O' as the component because I did not know what to put.

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            sorvig Morten Sørvig
            jn J N
            Veli-Pekka Heinonen Veli-Pekka Heinonen
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            Dates

              Created:
              Updated:
              Resolved: