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Hi, since the IOMMU grouping problems keep me from passing through my GPU, I wanted to ask if I could downgrade my current Proxmox 4.1 (on Debian Jessie) to Proxmox 3 with kernel 3.10. Or could I even use kernel 3.10 with Proxmox 4?? And yes, pcie_acs_override=downstream is enabled, but...

@dietmar so will the iommu grouping issue be fixed anytime soon?

I also have a problem with GPU passthrough, I figured the problem is caused by the iommu grouping: /sys/kernel/iommu_groups/1/devices/0000:00:01.0 <- PCI bridge - 8086:0c01 /sys/kernel/iommu_groups/1/devices/0000:00:01.1 <- PCI bridge - 8086:0c05 /sys/kernel/iommu_groups/1/devices/0000:01:00.0...

Running proxmox-ve: 4.1-26 (running kernel: 4.2.6-1-pve) It still has the iommu grouping problem, my onboard SAS controller is in the same iommu_group as my GPU which means I can't pass through the GPU when my SAS controller already has been passed through...

Hello, I've switched from ESXi to Proxmox VE 4 (latest packages and kernel installed ofc) yesterday and everything works fine, the TV card (Tevii S471) I couldn't pass through in ESXi works flawless under KVM aswell as my onboard SAS controller also passes through nicely. Now I also wanted to...