Nvidia GPU is not shown
Closed this issue · 4 comments
I have a Lenovo Ideapad 5 15ITL05 laptop with Intel TigerLake-LP GT2 [Iris Xe Graphics] and NVIDIA GeForce MX450.
When I run the command lspci -nn | grep NVIDIA , it lists my NVIDIA GPU:
01:00.0 3D controller [0302]: NVIDIA Corporation TU117M [GeForce MX450] [10de:1f97] (rev a1)
However, the output of ls-iommu -g only shows my Intel integrated GPU:
IOMMU Group 0: 0000:00:02.0 VGA compatible controller [0300] Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] [8086:9a49] (rev 01)
I saw this in your code. Does this mean my laptop does not support GPU passthrough because of Nvidia being "3D controller" and not "VGA compatible controller"?
yes 3D controllers are not supported since they rely on the igpu to even function, i can however make a flag to show 3d controllers so people who want to experiment (and most likely crash their system) can still try as i have heard of a total of 2 people who have managed to make it work (although not great)
nevermind @ih8d8, 3D controllers dont work at all since you cant make them realize there is a monitor connected (or internal display) because that is handled by the igpu.
you can follow the whole rabbit hole here
https://lantian.pub/en/article/modify-computer/laptop-intel-nvidia-optimus-passthrough.lantian/
So just to avoid confusion (until a way to make it actually properly work with passing through 3D controllers) i will make a flag with a warning or just keep ignoring 3D controllers.
Yeah, I saw that blog post yesterday and concluded it's way more complicated than I thought so I just gave up on it. Thanks for your replies though.
no problem