Comment 2 for bug 1260929

I'm experiencing this as well on Linux Mint 17.1 Rebecca with Cinnamon 2.6.7+rafaela. I haven't upgraded to Linux Mint 17.2 yet, I'll come back after I upgrade.

Asus U36S laptop machine
Kernel: 3.13.0-61-generic
Graphics (Optimus, NVIDIA chip turned off by default):

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Device 2111
        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 47
        Region 0: Memory at dc400000 (64-bit, non-prefetchable) [size=4M]
        Region 2: Memory at b0000000 (64-bit, prefetchable) [size=256M]
        Region 4: I/O ports at e000 [size=64]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: <access denied>
        Kernel driver in use: i915

01:00.0 VGA compatible controller: NVIDIA Corporation GF119M [GeForce 610M] (rev ff) (prog-if ff)