I have a lenovo ThinkStation P520, Xeon W-2135, 128GB RAM, Ubuntu 24.04.3 LTS (kernel 6.14.0-36-generic). I am trying to run a dual GPU configuration: Quadro P4000 (PCI 65:00.0) and RTX 5060Ti (PCI 13:00.0, showing as “NVIDIA Corporation Device 2d04” in neofetch). I installed NVIDIA driver 580.95.05 installed via Ubuntu. The problem: nvidia-smi only enumerates the P4000, while neofetch correctly detects both GPUs at the PCI level. Ubuntu’s driver selection interface likewise only shows the P4000. I have attempted troubleshooting: switched between 580 and 580-open drivers, confirmed Above 4G Decoding is enabled in BIOS (latest version), and verified physical seating/power. The 5060Ti appears unreachable by the NVIDIA driver despite being visible to the OS. Should I just purge all nvidia drivers and reinstall them?
It is not possible to use a Pascal and Blackwell GPU in the same system on Linux. If you want to use Blackwell, you need to switch to the open source variant of the driver. I would make sure you install the latest 580 as it’s a new card.
Hmm I have already selected the 580-open in the additional driver. I guess 580-open is incompatible with P4000? So I guess removing the P4000, purge all existing nvidia drivers and reinstall latest ubuntun 580 driver?
If the Pascal GPU is working, the open drivers aren’t installed. The open drivers are only supported on Turing or newer.
I see. So Blackwell only works with 5XX-open dirvers while Pascal does not work with any open drivers. I will remove the P4000 and try again
Sorry, was short on time.
You need to restart for any driver you install to take affect. You shouldn’t need to purge anything beforehand.
Able to get it resolved after a lot of trouble shooting.
So first I uninstalled the P4000 and rebooted the system. This leads to blank screen. After trying to get to terminal multiple times I just ended up reinstalling Ubuntu.
New Ubuntu install automatically applied the noevue driver. Which is fine. After install I selected 580-open from the additional drivers list. It was able to install the driver just fine and nvidia-smi did recognize the GPU this time. However, for some weird reason I lost my WiFi card in Ubuntu.
So third try. I reinstalled ubuntu. Then I applied latest kernal paches first. Then from terminal installed 580-open. This time it worked. GPU is accessible, and WiFi is not lost.
Definitely took a long while to solve this.
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