Re: [PVE-User] USB Expansion Card for PCIE Hub passthrough?

Re: [PVE-User] USB Expansion Card for PCIE Hub passthrough?

[Stefan]

In the days I did GPU passthrough I luckily always had a spare onboard USB controller in a separate IOMMU group which could be passed through, so I didn't need a add-on card.

I think you already know the GPU pt Guide from arch wiki? https://wiki.archlinux.org/title/PCI_passthrough_via_OVMF

The important thing is that the chip supports reset. So it can end in trial + error if you don't find a well known working device.

Am 31. August 2023 02:10:11 MESZ schrieb Lindsay Mathieson <lindsay.mathieson@gmail.com>:
>Looking to purchase a USB expansion card to passthrough entire to my Windows 11 VM, hoping it will help with USB audio issues and improve occasional mouse/keyboard weirdness. Already have an NVidia Card passthrough working fine.
>
>
>Will any generic USB Card do or should I be looking for particular brands/chipsets?
>
>Currently looking at a Orico 7 Port USB 3.0 PCIe Dual Chip Card.
>
>
>Thanks.
>
>-- 
>Lindsay Mathieson
>
>
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>pve-user mailing list
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Re: [PVE-User] USB Expansion Card for PCIE Hub passthrough?

[Lindsay Mathieson]

Thanks everyone for the useful info.

nb. I did try passing through my Motherboard USB as its not used by the 
proxmox install, but that was a disaster. Shares IOMMU groups with the 
disk controller...

On 31/08/2023 3:40 pm, Arjen via pve-user wrote:
> Some GPUs have USB and often you can passthrough an internal USB controller that
> is provided by the CPU. Those usually work with passthrough.

None on mine (GTX 1070) unfortunately  :)

> Please search the internet/forums for a USB controller that is known to work with passthrough.
> Many cheap devices use a USB-chip that does not reset properly.  Sometimes manufacturers change
> the chip without warning for a cheaper one. Level1techs forum might help:
> https://forum.level1techs.com/t/jacks-hardware-the-ultimate-vfio-usb-3-0-controller/135926


Thanks!

>> Currently looking at a Orico 7 Port USB 3.0 PCIe Dual Chip Card.
>>
> Sorry, but I have no experience with that one. Check what chip it uses internally.

Yeah, thats the trouble with the cheap and cheerfuls, getting solid info 
on the chipsets is a minefield.

> Best of luck on your hunt for the right USB controller.


Thanks! I'll post here if I find anything.

-- 

Lindsay Mathieson

Re: [PVE-User] USB Expansion Card for PCIE Hub passthrough?

[Lindsay Mathieson]

That was a really interesting article - decided to get the "Startech 4 
Port SuperSpeed PEXUSB3S44V" it uses the same chipset (Renesas/NEC - 
µPD720202) as the card referenced in the article.

Thanks!

On 31/08/2023 3:40 pm, Arjen via pve-user wrote:
> Level1techs forum might help:
> https://forum.level1techs.com/t/jacks-hardware-the-ultimate-vfio-usb-3-0-controller/135926

-- 
Lindsay Mathieson

Re: [PVE-User] USB Expansion Card for PCIE Hub passthrough?

[Lindsay Mathieson]

Card hasn't turned up yet but I did notice that one of the USB hubs had 
its own IOMMU group, so passed that through (added the PCI id to 
vfio.conf). Much to my surprise it worked.

Holy crap, the difference is amazing. USB Audio just works now, no 
cracking or interrupts when starting any disk io or high CPU. The mouse 
is much more responsive.

On 2/09/2023 10:49 am, Lindsay Mathieson wrote:
> That was a really interesting article - decided to get the "Startech 4 
> Port SuperSpeed PEXUSB3S44V" it uses the same chipset (Renesas/NEC - 
> µPD720202) as the card referenced in the article.

-- 
Lindsay Mathieson