hi 

i have just upgraded to a ryzen for my system and i am unable to get the nvidia driver to see the p400 card 

i get the following error 

"NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running."

 

quick system overview 

b450 mortherboard 

pci slot 1 p400

pci slot 2 lis card 

pci slot 3 quadro nvs 295 

 

slot three is set to primary video device and it give an out put on video 

 

the cards are both showing in the device list 

 

[1022:43c7] 02:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01)

[8086:1539] 03:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03)

[1000:0072] 05:00.0 RAID bus controller: Broadcom / LSI SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 03)

[10de:06fd] 07:00.0 VGA compatible controller: NVIDIA Corporation G98 [Quadro NVS 295] (rev a1)

IOMMU group 1:[1022:1482] 00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge

IOMMU group 2:[1022:1482] 00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge

[1022:1483] 00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse GPP Bridge

[10de:1cb3] 08:00.0 VGA compatible controller: NVIDIA Corporation GP107GL [Quadro P400] (rev a1)

[10de:0fb9] 08:00.1 Audio device: NVIDIA Corporation GP107GL High Definition Audio Controller (rev a1)

 

i have removed the driver and reinstalled it same error 

i tried with just the p400 in same error

i changed the slot of the p400 same error

 

anybody got any ideas 

 

Best bet is to use the existing plugin support thread:

 

 

Since it was already re-posted by the OP on the Nvidia thread going to lock this one.