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When my windows are not maximised the title bar disappears and the only way to get hold of the application pane is to Alt + Click and Drag.

I am running Natty with Unity and I have not restarted the machine since experiencing the problem. This is because I have a long running process executing on my machine.

Is there an option I might have accidentally enabled? Or does it sound like some kind of process crash? How can I rectify it?

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up vote 2 down vote accepted

It seems to be a compiz problem. Without using ccsm you can enter hit Alt + F2 and enter the command compiz --replace.

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thank you Traffynnon for edit. – Elvis D. May 5 '11 at 14:57

I'm having this problem as well (In Unity and in Classic). A temporary workaround is to start compizconfig-settings-manager (CCSM), then un-select and re-select window decorations. This will restore your titles, etc. It seem to be a problem with the newer compiz (OpenGL perhaps).

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I cannot find the compiz-settings-manager anywhere. How do I get it running? Running compiz-decorator & in the console brings the toolbars back so it looks like this is definitely the problem. – Treffynnon May 5 '11 at 14:12
The module is called compizconfig-settings manager. Thanks for the tip with compiz-decorator, I believe that's actually what the settings manager runs, and the workaround is more direct. – Nerdfest May 5 '11 at 20:56

An immediate solution to the problem is to:

  1. Hit Ctrl + Alt + T to open a new terminal
  2. Then type compiz-decorator & and hit enter
  3. You can now close the terminal

The ampersand (&) after the command causes it to run the background so it will still run even after closing the terminal window.

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