hybrid graphics laptop over m2 sata egpu good idea or not?

[john redneck]

I am owner twicked Acer Aspire. (100% Qubes OS compatibility).

So, that laptop has 32gb ram ddr4, i7-6500, 520 intel hd + nvidia 950m, also 1TB m2 sata samsung EVO and intel iommu support.

I can remove m2 wifi module card and replace it with m2 EGPU (for example, nvidia 1060 GTX PCI-E card).

Is it possible to gpu passthrouth dedicated eGPU card to debian/fedora AppVM or HVM?

Anyone has success or Qubes bad with gpu passthrouth on laptops?

[Foppe de Haan]

it is or will be possible, but I'd highly recommend against using nvidia cards for this, as they're much more likely to refuse to work when passed through (because nvidia blocks this in drivers). 

Aside from that, it won't be easy to do generally. May also depend on which iommu group the m.2 connector currently connected to the wifi module is in. 

More importantly, it will probably be highly bandwidth constrained because intel motherboards will route m.2 through the chipset, which has a pcie3 x4 connection with the CPU (while connecting all of the peripherals, so usb, m.2, sata ports..).

All in all, if you want to do this, I'd either try a desktop (with a dedicated pcie3 x8 connector available for the GPU), or a ryzen 4000 series laptop, after checking out how the usb or other ports connect to the CPU.