Ubuntu desktop does not appear on DGX Station A100 discrete GPU by default
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-nvidia (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
nvidia-graphics-drivers-535 (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
nvidia-graphics-drivers-535-server (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
The DGX Station A10 has various display options. The BMC provides an emulated device (Aspeed controller), a physical BMC controller (NVIDIA Quadro T1000 Mobile), and a discrete GPU card with 4 DisplayPort outputs (A100 SXM4 80GB). See the user guide[*] for a diagram.
In a default Ubuntu Desktop 22.04 ('jammy') install, nothing appears on the A100 DisplayPort output.
NVIDIA DGX OS - a derivative of Ubuntu - works around this by installing a service that generates an xorg config file dynamically based on the "OnBrd/Ext VGA Select" setting (aka "dmidecode -t 11"). I'll attach samples of those files here. Replacing the default Ubuntu xorg.conf file with the sample xorg-nvidia.conf file on a default Ubuntu Desktop install is confirmed to enable output.
[*] https:/
(Note: split from bug 2031367)
affects: | ubuntu → xorg-server (Ubuntu) |
tags: | added: dgx hybrid jammy multigpu nvidia |
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