TLDR: Why won't TrueNAS Scale boot when initial display output is set to PCIe Slot 1 (i.e. discrete GPU, dGPU) and Integrated Graphics (iGPU) is enabled?
[Configurations in the order they were attempted.]
Motherboard: Gigabyte C246M-WU4
CPU: Intel i3-9100 (with UHD Graphics 630)
GPU: Nvidia Quadro P2000
I would like to enable both UHD Graphics 630 and Quadro P2000 in my TrueNAS Scale instance. I noticed, when Quadro P2000 was first inserted, that I wasn't able to detect both GPUs in my system. I understood, from further reading, that the BIOS typically disables the iGPU when a dGPU is inserted to save memory. Because I still wanted to use them both, I went into the BIOS to force-enable the iGPU. This however resulted in Scale not booting. It wouldn't proceed past enabling the iGPU (see photo).
I wasn't sure if Scale would accept two GPUs. As a last-ditch attempt, I left the dGPU insert and forced the initial display to the iGPU. Scale was able to boot up and the system was able to detect both GPUs. This is good and probably all I need, but the question remains: why wouldn't Scale boot when the initial display was set to the dGPU while iGPU was still enabled?
Perhaps an aside, but relevant:
The Quadro P2000 wasn't able to perform transcoding when it was first installed, so I broke a rule and installed its drivers using
However, that installation, at the end, complained about
Could it have caused the issue above?
In general, what is the consequence of a package installation not having access to
[Configurations in the order they were attempted.]
| PCIe slot 1 | Initial Display Output | Integrated Graphics | Boots? | GPUs detected |
|---|---|---|---|---|
| None | UHD Graphics 630 | Auto | Yes | UHD Graphics 630 |
| Quadro P2000 | Quadro P2000 | Auto [Probably automatically Disabled] | Yes | Only Quadro P2000 |
| Quadro P2000 | Quadro P2000 | Enabled | No [WHY?] | NA |
| Quadro P2000 | UHD Graphics 630 | Auto | Yes | UHD Graphics 630 & P2000 |
Motherboard: Gigabyte C246M-WU4
CPU: Intel i3-9100 (with UHD Graphics 630)
GPU: Nvidia Quadro P2000
I would like to enable both UHD Graphics 630 and Quadro P2000 in my TrueNAS Scale instance. I noticed, when Quadro P2000 was first inserted, that I wasn't able to detect both GPUs in my system. I understood, from further reading, that the BIOS typically disables the iGPU when a dGPU is inserted to save memory. Because I still wanted to use them both, I went into the BIOS to force-enable the iGPU. This however resulted in Scale not booting. It wouldn't proceed past enabling the iGPU (see photo).
I wasn't sure if Scale would accept two GPUs. As a last-ditch attempt, I left the dGPU insert and forced the initial display to the iGPU. Scale was able to boot up and the system was able to detect both GPUs. This is good and probably all I need, but the question remains: why wouldn't Scale boot when the initial display was set to the dGPU while iGPU was still enabled?
Perhaps an aside, but relevant:
The Quadro P2000 wasn't able to perform transcoding when it was first installed, so I broke a rule and installed its drivers using
apt.Code:
sudo apt install nvidia-legacy-390xx-driver
However, that installation, at the end, complained about
initramfs not being present. Nevertheless, the installation completed successfully, I was able to reboot Scale with no issues, and I was eventually able to use NVENC for transcoding. Because Scale is an appliance and not a full-fledged Debian OS, I am very worried that this broke something.Could it have caused the issue above?
In general, what is the consequence of a package installation not having access to
initramfs?
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