aurora

@cam21sk8r So you're saying it was running at PCI 2.0 before, but now it isn't?

@Khenglish do you know if I can use setpci to set the link speed?

This is my lspci output before installing the drivers:

03:00.0 VGA compatible controller: NVIDIA Corporation GK104 [GeForce GTX 660 Ti] (rev a1) (prog-if 00 [VGA controller])
        Subsystem: Micro-Star International Co., Ltd. [MSI] Device 2845
        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-
        Interrupt: pin A routed to IRQ 18
        Region 1: Memory at <unassigned> (64-bit, prefetchable) [disabled]
        Region 3: Memory at <unassigned> (64-bit, prefetchable) [disabled]
        Region 5: I/O ports at <unassigned> [disabled]
        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 256 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 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <512ns, L1 <4us
                        ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Range AB, TimeoutDis+, LTR-, OBFF Not Supported
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Capabilities: [b4] Vendor Specific Information: Len=14 <?>
00: de 10 83 11 00 00 10 00 a1 00 00 03 00 00 80 00
10: 00 00 00 00 0c 00 00 00 00 00 00 00 0c 00 00 00
20: 00 00 00 00 01 00 00 00 00 00 00 00 62 14 45 28
30: 00 00 00 00 60 00 00 00 00 00 00 00 00 01 00 00
40: 62 14 45 28 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 01 00 00 00 ce d6 23 00 00 00 00 00
60: 01 68 03 00 08 00 00 00 05 78 80 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 10 b4 02 00 e1 8d 90 05
80: 10 29 00 00 03 3d 45 00 40 01 11 10 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 13 00 00 00
a0: 00 00 00 00 0e 00 00 00 03 00 00 00 00 00 00 00
b0: 00 00 00 00 09 00 14 01 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

This is my lspci after installing the drivers:

03:00.0 VGA compatible controller: NVIDIA Corporation GK104 [GeForce GTX 660 Ti] (rev a1) (prog-if 00 [VGA controller])
        Subsystem: Micro-Star International Co., Ltd. [MSI] Device 2845
pcilib: 0000:03:00.0 64-bit device address ignored.
pcilib: 0000:03:00.0 64-bit device address ignored.
        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-
        Interrupt: pin A routed to IRQ 18
        Region 0: Memory at f1000000 (32-bit, non-prefetchable) [disabled]
        Region 1: Memory at <ignored> (64-bit, prefetchable) [disabled]
        Region 3: Memory at <ignored> (64-bit, prefetchable) [disabled]
        Region 5: I/O ports at <unassigned> [disabled]
        Capabilities: [60] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D3 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [78] Express (v1) Endpoint, MSI 00
                DevCap: MaxPayload 256 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, Exit Latency L0s <512ns, L1 <4us
                        ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-
                        ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
        Capabilities: [b4] Vendor Specific Information: Len=14 <?>
00: de 10 83 11 00 04 10 00 a1 00 00 03 00 00 80 00
10: 00 00 00 f1 0c 00 00 00 0e 00 00 00 0c 00 00 08
20: 0e 00 00 00 81 3f 00 00 00 00 00 00 62 14 45 28
30: 00 00 00 00 60 00 00 00 00 00 00 00 12 01 00 00
40: 62 14 45 28 00 00 00 00 00 00 00 00 00 00 00 00
50: 01 00 00 00 01 00 00 00 ce d6 23 00 00 00 00 00
60: 01 68 03 00 0b 00 00 00 05 78 80 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 10 b4 01 00 e1 8d 90 05
80: 10 29 00 00 01 3d 45 00 00 01 11 10 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 03 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 09 00 14 01 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

I have found a semi definition of the memory addresses to modify here:

https://github.com/skeggsb/nouveau/blob/master/drm/nouveau/nvkm/subdev/pci/gk104.c

 

however, only lnkctl seems to have a relevant register of a8.

For lnkspeed and lnkctl, they don't directly map to the registers.

This sounds like your issue

 

Ok, so strange thing:

I uninstalled the driver with DDU. When I plugged the graphics card in, it shows up in Device Manager as "Microsoft Basic Display Adapter" which is expected. When I look at GPU-Z, it says graphics card supports x16 3.0, but connected at x1 1.1.

At this point, before the drivers are installed, should it be running at PCI 2.0?

 

The weird thing is when I install the drivers, then GPU-Z says graphics card supports 16x 1.1.

 

So this must mean it is a driver issue?

 

But why would installing the drivers change what the card reports it supports? On the MSI website it says PCI-E 3.0

HWinfo shows this:

 

I will try uninstalling with DDU and starting afresh.

Hi

I just purchased the PE4C as other products have problems running at PCIE 2.0 speeds.
I have an MSI Geforce 660 Ti. The geforce website says it supports 16x PCIE 3.0

https://uk.msi.com/Graphics-card/N660Ti2GD5OC.html#hero-specification

 

However when I look in GPUZ while unigine valley is running, it shows

 

 

Why is my 660 Ti reporting that it only supports x16 1.1?