The data in comment #1 shows only two "VGA" controllers that could be
used:
46:00.0 VGA compatible controller [0300]: ASPEED Technology, Inc. ASPEED
Graphics Family [1a03:2000] (rev 41) (prog-if 00 [VGA controller])
c1:00.0 VGA compatible controller [0300]: NVIDIA Corporation TU117GLM [Quadro
T1000 Mobile] [10de:1fb0] (rev a1) (prog-if 00 [VGA controller]) (this is
"PCI:193:0:0")
So we want to tell the kernel to boot without PCI device "46:00.0" or
else it will likely only use ASPEED as the boot VGA. I can't find a
quick answer right now but maybe by assigning this bug to the kernel
team someone will...
** Also affects: linux-nvidia (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2033418
Title:
Ubuntu desktop does not appear on DGX Station A100 discrete GPU by
default
Status in linux-nvidia package in Ubuntu:
New
Status in nvidia-graphics-drivers-535 package in Ubuntu:
New
Status in nvidia-graphics-drivers-535-server package in Ubuntu:
New
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://docs.nvidia.com/dgx/dgx-station-a100-user-guide/getting-
started-station-a100.html
(Note: split from bug 2031367)
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