Asus Sabertooth Z77 with Tesla P40

[dcarrion87]

System

• Motherboard: Asus Sabertooth Z77
• BIOS Version: 2104
• GPU: P40 24GB
• [ X ] CSM is turned off
• 4G decoding is enabled
• UEFIPatch is applied (see Using UEFIPatch for more information). On some motherboards DSDT Patching is also needed
• I have read Common issues (and fixes)

Description

I have a similar issue to #77.

CSM is disabled, Memory Remapping disabled. I've tried memory remapping enabled and nvidia-smi doesn't work with no device found and dmesg showing IO region errors.

I think I only need to do the DSDT patch?

Currently running with 8GB RAM trying to get a 24GB P40 working on Ubuntu 22.04

I followed the DSDT patching guide https://github.com/xCuri0/ReBarUEFI/wiki/Sandy-and-Ivy-Bridge-32GB-BAR-DSDT-modification but can't even get it to compile at the moment. The error lines don't match up.

Just wondering if someone could point me in the right direction so I can diff the files to see where I'm going wrong. The original output files:

errors.log.txt

dsdt.dsl.txt

dsdt.dat.txt

[dcarrion87]

Nevermind, I am blind.

Got it working with 16GB RAM. Could not take it to 24GB. Any thoughts?

Here's the modified file:

dsdt.dsl.txt

# free -m
               total        used        free      shared  buff/cache   available
Mem:           15156         287       14562           1         306       14597
Swap:           4095           0        4095

# nvidia-smi
Mon Nov  6 15:56:31 2023
+---------------------------------------------------------------------------------------+
| NVIDIA-SMI 535.129.03             Driver Version: 535.129.03   CUDA Version: 12.2     |
|-----------------------------------------+----------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |         Memory-Usage | GPU-Util  Compute M. |
|                                         |                      |               MIG M. |
|=========================================+======================+======================|
|   0  Tesla P40                      Off | 00000000:01:00.0 Off |                  Off |
| N/A   50C    P0              51W / 250W |      0MiB / 24576MiB |      1%      Default |
|                                         |                      |                  N/A |
+-----------------------------------------+----------------------+----------------------+

+---------------------------------------------------------------------------------------+
| Processes:                                                                            |
|  GPU   GI   CI        PID   Type   Process name                            GPU Memory |
|        ID   ID                                                             Usage      |
|=======================================================================================|
|  No running processes found                                                           |
+---------------------------------------------------------------------------------------+

[xCuri0]

@dcarrion87 probably some address space limitation, dmesg should say why.

you're lucky 16GB RAM works because for others only 8GB worked