system became unusable after resume from hibernation

[Teo]

I resumed from hibernation.
All the windows would respond to some kinds of interaction, but not others.

For example:
+ I could bring a window to front by clicking on its launcher icon
+ I could unmaximize the frontmost maximized window by clicking on the top of the screen and dragging it downwards,
- however I could not move around a window by dragging its title bar,
- nor by alt-clicking inside the window and dragging
- nor could I close a window by clicking on its close button,
+ I could switch window with alt+tab
- but not by clicking on any window
+ I could "initiate" quitting a program by using its File menu -> quit, or by right-clicking on its launcher icon and choosing "quit"
- but once the popup window appeared asking me whether to save or discard changes or cancel, none of the buttons would respond to clicks

No process was consuming a relative amount of cpu.
This got fixed only by rebooting.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: unity 7.0.0daily13.06.19~13.04-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-35.50-generic 3.8.13.13
Uname: Linux 3.8.0-35-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Tue Feb 11 16:28:42 2014
InstallationDate: Installed on 2013-10-11 (122 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Andrea Azzarone (azzar1)]

13.04 is no longer supported. Is this still a problem on 12.04 or 14.04 or 14.10?

[Launchpad Janitor (janitor)]

[Expired for Unity because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for unity (Ubuntu) because there has been no activity for 60 days.]