Alright, I was on 7.2.4, both cards worked fine and I don't remember what the driver was

Then upgraded to 7.2.5 and both GPUs can be seen by the Nvidia driver, but got these errors

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

and this is in the logs "kernel: nvidia-nvlink: Unregistered Nvlink Core, major device number 240"

Both cards are shown in the NVIDIA driver page but they aren't working .. the driver page recommended downgrading from v595.71.05 to v580.159.03, which fixed my P400, but GTX 970 disappeared completely. I also can't go below v580.159.03.

Is this an issue with my Unraid, or shall I say goodbye to my GTX 970?

Because quick searching says that kernel updates with 7.2.5 caused this new behaviour, but I'm not sure about that.

Attached warmind-diagnostics-20260505-1949.zip file

Edited May 5May 5 by TheExoticBeard
typos

Please see the Nviad plugin support, but I'm pretty sure you can still install the old driver. [Plugin] Nvidia-Driver - Plugin Support - Unraid

29 minutes ago, JorgeB said:

Please see the Nviad plugin support, but I'm pretty sure you can still install the old driver. [Plugin] Nvidia-Driver - Plugin Support - Unraid

Thanks, I replied there.

Found the issue. Apparently, one of the VMs that uses the GPU autostarted with boot, and that caused the GPU to disappear completly because of the bypass

@TheExoticBeard ---

Both cards are now End-of-Life by Nvidia, so no more driver support after v580. Your Pascal based P400 is on a limited usable life, but eventually either the available Nvidia drivers or Docker container Nvidia runtime code will no longer support it. Clock is ticking on that one. The GTX 970 is Maxwell based, and having been released in 2014 (with a very short, 1 year run before Pascal was released) really has little use with Docker containers.

What I would suggest doing is:

• In the Nvidia Driver plugin, select the v580 driver. This will prevent you from possibly updating to a later version driver. This will keep your P400 happy for use in Docker containers.

• In Tools > System Devices, pin the GTX 970 for use in VM. This will then keep the Nvidia driver from even seeing the card and complaining. You can use the GTX 970 with VMs.

• Start shopping around for a replacement for your P400. The time is coming when it will no longer be supported at all. I recently replaced mine with a RTX A400. They can be had on eBay for around $200.

Edited May 5May 5 by ConnerVT