Comment 41 for bug 1166765

This bug also affects me (already clicked on that), a couple extra info:

* Not running any nvidia drivers nor having an nvidia card:

00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller])
 Subsystem: Lenovo Device 215a
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0
 Interrupt: pin A routed to IRQ 26
 Region 0: Memory at f2000000 (64-bit, non-prefetchable) [size=4M]
 Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]
 Region 4: I/O ports at 1800 [size=8]
 Expansion ROM at <unassigned> [disabled]
 Capabilities: <access denied>
 Kernel driver in use: i915

* once the issue was present, dconf did not included unity as active plugin:

nessita@miro:~$ dconf read /org/compiz/profiles/unity/plugins/core/active-plugins
['core', 'ccp', 'move', 'regex', 'mousepoll', 'imgpng', 'snap', 'session', 'compiztoolbox', 'commands', 'resize', 'workarounds']

* running a reset on dconf configs fixed it:

dconf reset /org/compiz/profiles/unity/plugins/core/active-plugins