cablecutter Posted February 28, 2018 Posted February 28, 2018 Hi All, I'm out of ideas and could use a push on the right direction. I have a new bit of hardware, a Ryzen AM4 build on an Asrock X370 Taichi board. I am running a windows 10 VM. There are two devices that I would like to pass through (highlighted in the image below): An integrated Wifi Controller with Bluetooth (09:00.0) A PCIE USB controller (0a:00.0) The trouble is that these devices share a n IOMMU grouping with my main NIC (also integrated), which I hear is a no-no. I've tried: Setting ACS Override to Y (results shown) Setting "Iommu Groupings" to 'enabled' in the bios Flipping other rather undocumented switches in the bios that seem to be related to PCIE cards...wish I could remember which ones. What can I try next? Best, Rob
cablecutter Posted March 1, 2018 Author Posted March 1, 2018 Still stuck on this. Are there any bios settings I may be overlooking?
1812 Posted March 1, 2018 Posted March 1, 2018 turn acs ovveride back to off, then modify your syslinux.cfg to this: append pcie_acs_override=id:8086:24fb,1106:34B3 initrd=/bzroot verify these numbers match your device id's (my eyes are not doing so well this evening....)
cablecutter Posted March 3, 2018 Author Posted March 3, 2018 Thanks - gave that a shot for just the via card, but it seems to have had no effect. default menu.c32 menu title Lime Technology, Inc. prompt 0 timeout 50 label unRAID OS menu default kernel /bzimage append pcie_acs_override=id:1106:3483 initrd=/bzroot label unRAID OS GUI Mode kernel /bzimage append initrd=/bzroot,/bzroot-gui label unRAID OS Safe Mode (no plugins, no GUI) kernel /bzimage append initrd=/bzroot unraidsafemode label Memtest86+ kernel /memtest
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