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List:       kde-bugs-dist
Subject:    [Bug 296289] New: Black boxes shown when using alt-tab switcher with thumbnails
From:       Luca Beltrame <lbeltrame () kde ! org>
Date:       2012-03-18 17:31:23
Message-ID: bug-296289-17878 () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=296289

            Bug ID: 296289
          Severity: normal
           Version: git master
          Priority: NOR
          Assignee: kwin-bugs-null@kde.org
           Summary: Black boxes shown when using alt-tab switcher with
                    thumbnails
    Classification: Unclassified
                OS: Linux
          Reporter: lbeltrame@kde.org
          Hardware: Other
            Status: NEW
         Component: tabbox
           Product: kwin

Created attachment 69715
  --> https://bugs.kde.org/attachment.cgi?id=69715&action=edit
Output of supporting information from KWin

Setup: ATI Radeon 4850 with FOSS drivers.

When setting the alt-tab switcher to use thumbnails, the current highlighted
window is shown as a black square (see screenshot). The problem does not occur
if OpenGL ES is used.

Steps to reproduce:

1. Set tab switcher to use thumbnails (System Settings > Window behavior >
"Layout Based Switcher" > "Thumbnails"
2. Alt-tab between windows

Expected results: window thumbnails are shown for all the windows
Actual results: the currently highlighted window is a black square

Screenshot and supporting information will be attached to this report.

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