Comment 2 for bug 977683

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Albert Astals Cid (aacid) wrote :

How is your external display connected? Via a regular port or via some propietary hardware system? It seems kind of strange that adding a new screen would trigger this issue.

If you feel adventurous please install unity-2d from this ppa https://launchpad.net/~aacid/+archive/ppaprecise/ and do the following
 * Open a terminal
 * Write "killall unity-2d-shell"
 * Write "killall unity-2d-shell" again
 * Write "unity-2d-shell"
 * Try to reproduce the problem with alt+tab triggering the hud
 * Attach here the output of the "unity-2d-shell" command, which shall contain the logging of which keys you pressed/released and why the hud was triggered