https://bugs.kde.org/show_bug.cgi?id=507746
--- Comment #7 from [email protected] --- Some updates (for someone may be interested in) 1. Guest + no 3d-acc will use dmabuf (and have glitch) 2. Guest + 3d-acc will use memfd (no glitch) 3. Host wil use dmabuf (no glitch) ----------------------------------------- I guess 1) there might some width/height calculation issue in guest which causing dmabuf wrongly used. If you set application width near to 640 , the problem will disappear 2) or sync related issue , dmabuf is changed before use. ------------------------------------------ KDE's "Alt+Tab" (task switcher 's preview) do not have glitch under Guest + no 3d-acc . It uses KWin.WindowThumbnail https://invent.kde.org/plasma/kwin/-/blob/master/src/tabbox/switchers/thumbnail_grid/contents/ui/main.qml#L146 https://invent.kde.org/plasma/kwin/-/blob/master/src/scripting/windowthumbnailitem.cpp -- You are receiving this mail because: You are watching all bug changes.
