I have a Dell R720 home lab running Ubuntu 22.04. It is equipped with the following GPUs:
$ nvidia-smi -L
GPU 0: Tesla P40 (UUID: GPU-ac45b921-3664-d911-5dd7-e5b8d49551c3)
GPU 1: Tesla P40 (UUID: GPU-11fdf0e4-2c22-162a-a65e-f594c9a908ae)
GPU 2: NVIDIA GeForce GT 710 (UUID: GPU-6fabed11-9de9-cd98-3220-658b45c1e7e8)
I want to use the two P40s as CUDA compute cards and have the GT 710 run the desktop environment, but I have trouble setting up Xorg and/or Gnome. In particular, the GT 710 only outputs a wallpaper on the monitor, but I cannot see anything else: no mouse pointer or login window, and it doesn't respond to mouse movement or keystrokes. Like this:
How can I get a usable desktop environment?
The output of nvidia-smi
Tue Feb 6 17:32:33 2024
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 470.223.02 Driver Version: 470.223.02 CUDA Version: 11.4 |
|-------------------------------+----------------------+----------------------+
| 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 On | 00000000:04:00.0 Off | Off |
| N/A 28C P8 9W / 250W | 22MiB / 24451MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 1 Tesla P40 On | 00000000:42:00.0 Off | Off |
| N/A 29C P8 9W / 250W | 38MiB / 24451MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 2 NVIDIA GeForce ... On | 00000000:44:00.0 N/A | N/A |
| 50% 31C P8 N/A / N/A | 424MiB / 2002MiB | N/A Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| 0 N/A N/A 97708 G /usr/lib/xorg/Xorg 22MiB |
| 1 N/A N/A 97708 G /usr/lib/xorg/Xorg 38MiB |
+-----------------------------------------------------------------------------+
The content in /etc/X11/xorg.conf
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 470.223.02
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "AutoAddGPU" "off"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "Tesla P40"
BusID "PCI:4:0:0"
Option "Coolbits" "28"
EndSection
Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "Tesla P40"
BusID "PCI:66:0:0"
Option "Coolbits" "28"
EndSection
Section "Device"
Identifier "Device2"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "NVIDIA GeForce GT 710"
BusID "PCI:68:0:0"
Option "Coolbits" "28"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device2"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
I cannot paste the content in ~/.local/share/xorg/Xorg.0.log here because a post is limited to 30000 characters, but you can see it on Pastebin.
