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  1. Qt
  2. QTBUG-5464

Qt based applications fail to play videos in Linux after cairo-dock has been executed

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    • None
    • 4.5.3
    • Multimedia
    • None

      After executing cairo-dock (http://www.cairo-dock.org) in Linux / KDE 4.3 .2 (Kubuntu 9.10), all Qt based applications become unable to play videos.
      I have tested kaffeine, gwenview, smplayer and dragon player, all with the same result: the area of the window where the video should be displayed shows only a transparent gray background (if desktop effects are on in KDE) or a solid black baground (if desktop effects are off). I can hear the video, and the video players show a progress bar running as if the video was being played, but no image is shown. Non-qt video players (xine, mplayer, gnome player) work flawlessly after running cairo-dock.
      The Qt based video players work ok after executing cairo-dock if I set the XLIB_SKIP_ARGB_VISUALS environment variable to 1 (export XLIB_SKIP_ARGB_VISUALS=1) before running them, or if I log out KDE and log in again (and don't execute cairo-dock).
      I don't know what cairo-dock does to trigger this bug, but certainly there are (or there will be) other applications that trigger it too.

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            firedomain Qt Graphics Team (Inactive)
            mmtsales Marcelo Magno T. Sales
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