I just received my Y450 and I am having the same problem. I think I can get it to work by modifying the scripts provided by elektropionir based on the setpci commands provided by dsides. I just need to know how the register "F4.B" was determined. Thanks in advance.
Details:
The problem I am having is that
sudo setpci -s 00:02.0 F4.B=20
will not work for me because the the device address on my computer is
01:00.0 VGA compatible controller: nVidia Corporation Device 0a34 (rev a2)
Changing the command to
sudo setpci -s 01:00.0 F4.B=20
does nothing. The result of
sudo lspci -vvvxxx -s 01:00.0
is
01:00.0 VGA compatible controller: nVidia Corporation Device 0a34 (rev a2)
Subsystem: Lenovo Device 38fd
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 cc000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 3: Memory at ce000000 (64-bit, prefetchable) [size=32M]
Region 5: I/O ports at 2000 [size=128]
[virtual] Expansion ROM at cd000000 [disabled] [size=512K]
Capabilities: [60] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [68] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
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 5GT/s, Width x16, ASPM L0s L1, Latency L0 <256ns, L1 <4us
ClockPM+ Suprise- LLActRep- BwNot-
LnkCtl: ASPM L0s L1 Enabled; RCB 128 bytes Disabled- Retrain- CommClk+
ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
Capabilities: [b4] Vendor Specific Information <?>
Capabilities: [100] Virtual Channel <?>
Capabilities: [128] Power Budgeting <?>
Capabilities: [600] Vendor Specific Information <?>
Kernel driver in use: nvidia
Kernel modules: nvidia, nvidiafb
00: de 10 34 0a 07 00 10 00 a2 00 00 03 00 00 80 00
10: 00 00 00 cc 0c 00 00 d0 00 00 00 00 0c 00 00 ce
20: 00 00 00 00 01 20 00 00 00 00 00 00 aa 17 fd 38
30: 00 00 00 00 60 00 00 00 00 00 00 00 0a 01 00 00
40: aa 17 fd 38 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 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 e0 8d 2c 01
80: 10 29 00 00 02 2d 05 00 4b 01 11 10 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 10 00 00 00
a0: 00 00 00 00 00 00 00 00 02 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