A40 / displaymodeselector --gpumode graphics / Specified GPU mode not supported on this device 0x2235?

[daemonix00]

I cannot get the A40s on my system to change to GPU mode.
I get the same error on Windows and 2 different Linux distros.

How do I get this to work?
Thanks

root@sc03-bmil:~/NVIDIA Display Mode Selector Tool-March-2023-1.59.0/1.59.0/linux/x64# ./displaymodeselector --gpumode graphics -i 0

NVIDIA Display Mode Selector Utility (Version 1.59.0)
Copyright (C) 2015-2021, NVIDIA Corporation. All Rights Reserved.

WARNING: This operation updates the firmware on the board and could make
the device unusable if your host system lacks the necessary support.

Are you sure you want to continue?
Press ‘y’ to confirm (any other key to abort):
y
Specifed GPU Mode “physical_display_enabled_256MB_bar1”

Graphics Device (10DE,2235,10DE,145A) S:00,B:01,D:00,F:00

Specified GPU mode not supported on this device 0x2235.

root@sc03-bmil:~/NVIDIA Display Mode Selector Tool-March-2023-1.59.0/1.59.0/linux/x64#

[MarkusHoHo]

Hi @daemonix00,

What kind of output do you get if you use the interactive mode of simply using displaymodeselecotr --gpumode? It should show you all available modes.

Also, for Windows, you will need to change the driver model from TCC to WDDM as well by using nvidia-smi. Check the documentation that comes with the displaymodeselector tool for more details.

Thanks!

[daemonix00]

Hi,

Interactive mode gives me the 3 option as per the documentation:

Regarding windows, I think the doc says first to change the gpumode to “graphics” and then do thing to the Windows Driver… No?
(this is the smi output with everything default)

[MarkusHoHo]

Regarding the order of use of the two tools I think this is interchangeable.

But looking at your output I am at a loss right now as to why this does not work. I’ll reach out internally to get more eyes on this and how to debug further.

Thanks!

[daemonix00]

@MarkusHoHo

TCC to WDDM

Thanks please let me know if there is any other trick for it.

Regarding TCC to WDDM, its not, it give an error when I tried without the GPU in “graphics” mode.