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  1. Qt
  2. QTBUG-81904

[REG: 5.11.3->5.12.5] Flickering when alpha channel is requested, but there is no such visual

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    • Linux/X11

    Description

      To reproduce, set XLIB_SKIP_ARGB_VISUALS=1 environment variable and run attached example.

      The environment variable makes sure there are no argb visuals. However the application tries to set alpha channel, which probably should just fail and use some other visual, but for some reason this also causes it to flicker.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-58910 Crashes with NULL XVisualInfo

          • 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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              allan.jensen Allan Sandfeld Jensen
              poikelin Joni Poikelin
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                Resolved:

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