Can I get your laptop or mb make and model?
I spent years perfecting the use of an Optimus (nvidia / intel) laptop
to do gpuu passthrough.
Maybe I can help.
I contribute to a how to here:
https://forums.linuxmint.com/viewtopic.php?t=212692
On 6/28/20 11:38 PM, Jeff Tchang wrote:
Posted this on a Proxmox forum as well but wanted to see if anyone had
any ideas on getting an Intel 520 integrated GPU (Skylake) working.
For reference these are NUC 6i3.
The issue I am seeing is that upon starting the VM with PCI
passthrough enabled the screen blanks and just goes dark.
I am seeing dmesg lines:
[202.990645] DMAR: DRHD: handling fault status reg 2
[202.990662] DMAR: [DMA Write] Request device [00:02.0] PASID ffffffff
fault addr 0 [fault reason 02] Present bit in context entry is clear
[203.384895] vfio-pci 0000:00:02.0: vgaarb: changed VGA decodes:
olddecodes=io+mem,decodes=io+mem:owns=io+mem
More details available here:
https://gist.github.com/tachang/66d0db979aa6d9149a5a284e15b9bd74
I've seen one older thread which seems to apply to my situation.
https://www.redhat.com/archives/vfio-users/2018-May/msg00008.html
To continue I don't see anything useful in the libvirt domain log
(https://gist.github.com/tachang/f5d6b10e8e1e7f7ac2a5bb1180f6c096)
-Jeff
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