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Set PCIe speed for all hardware connected through the "bifurcator" to Gen2 or Gen1. If it runs then, you have a signal integrity issue, concerning the operation on PCIe Gen3, in combination with the "bifurcator". Remember, the more transitions over connectors the signals have to make, the worse...

Also would like to thank StephenM64 for his suggested workaround. Although it seems kind of hacky, it does indeed work. Confirmed here with a Nvidia GTX GPU. Non-working for pass-through by default, due to the mentioned "BAR" issue, with Kernel 5.15. After applying the workaround, it is...

Tim, are you sure, that grub is even used? Have a look at "/etc/kernel/cmdline", edit as required and then run "pve-efiboot-tool refresh". Besides, follow the usual how-tos.

And last update: The patch from kernel org worked flawlessly on the 5.9.1 kernel of my debian testing VM.

Could be, that I just found the explanation myself: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/gpu/drm/i915/i915_drv.h?h=v5.10-rc3&id=8195400f7ea95399f721ad21f4d663a62c65036f Edit: Mixed something up. This will need to find its way into the kernel of the...

Hi guys, I have a Intel CoffeeLake system (i3-8300 on C246 chipset), with installed Proxmox VE 6.2 (latest update status) that I wanted to use with several containers and one VM with fully passed-through i915 graphics. Found a setup, that is nearly fully working (vm conf excerpt): ...