Comment 30 for bug 915265

Verified unity 5.16.0-0ubuntu1 with nVidia graphic card, device id: "10de:1058"

lspci -nnvv output for the graphic card --

01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:1058] (rev a1) (prog-if 00 [VGA controller])
 Subsystem: Hewlett-Packard Company Device [103c:2aed]
 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 16
 Region 0: Memory at f6000000 (32-bit, non-prefetchable) [size=16M]
 Region 1: Memory at e8000000 (64-bit, prefetchable) [size=128M]
 Region 3: Memory at f0000000 (64-bit, prefetchable) [size=32M]
 Region 5: I/O ports at e000 [size=128]
 [virtual] Expansion ROM at f7000000 [disabled] [size=512K]
 Capabilities: [60] Power Management version 3
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
  Address: 0000000000000000 Data: 0000
 Capabilities: [78] Express (v2) Endpoint, MSI 00
  DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s unlimited, L1 <64us
   ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
  DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
   RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+
   MaxPayload 128 bytes, MaxReadReq 512 bytes
  DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
  LnkCap: Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency L0 <256ns, L1 <4us
   ClockPM+ Surprise- LLActRep- BwNot-
  LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
   ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
  LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  DevCap2: Completion Timeout: Not Supported, TimeoutDis+
  DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
  LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
    Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
    Compliance De-emphasis: -6dB
  LnkSta2: Current De-emphasis Level: -6dB
 Capabilities: [b4] Vendor Specific Information: Len=14 <?>
 Capabilities: [100 v1] Virtual Channel
  Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
  Arb: Fixed- WRR32- WRR64- WRR128-
  Ctrl: ArbSelect=Fixed
  Status: InProgress-
  VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
   Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
   Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
   Status: NegoPending- InProgress-
 Capabilities: [128 v1] Power Budgeting <?>
 Capabilities: [600 v1] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
 Kernel driver in use: nvidia
 Kernel modules: nvidia_current_updates, nouveau, nvidiafb